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. */
18 * Contains statistical data of the currently admissible audio files.
20 * It is used to assign normalized score values to each admissible audio file.
22 struct afs_statistics {
23 /** Sum of num played over all admissible files. */
24 int64_t num_played_sum;
25 /** Sum of last played times over all admissible files. */
26 int64_t last_played_sum;
27 /** Quadratic deviation of num played time. */
28 int64_t num_played_qd;
29 /** Quadratic deviation of last played time. */
30 int64_t last_played_qd;
31 /** Number of admissible files */
34 struct afs_statistics statistics;
37 * Assign scores according to a mood_method.
39 * Each mood_method has its own mood_score_function. The first parameter passed
40 * to that function is a pointer to a row of the audio file table. It
41 * determines the audio file for which a score is to be assigned. The second
42 * argument depends on the mood method this function is used for. It usually is
43 * the argument given at the end of a mood line.
45 * Mood score functions must return values between -100 and +100 inclusively.
46 * Boolean score functions should always return either -100 or +100.
48 * \sa struct mood_method, mood_parser.
50 typedef int mood_score_function(const char *path, const struct afs_info *afsi,
51 const struct audio_format_info *afhi, const void *data);
54 * Pre-process a mood line.
56 * The mood_parser of a mood_method is called once at mood open time for each
57 * line of the current mood definition that contains the mood_method's name as
58 * a keyword. The line is passed to the mood_parser as the first argument. The
59 * mood_parser must determine whether the line is syntactically correct and
60 * return a positive value if so and a negative value otherwise.
62 * Some mood parsers pre-process the data given in the mood line to compute a
63 * structure which depends of the particular mood_method and which is used
64 * later in the mood_score_function of the mood_method. The mood_parser may
65 * store a pointer to its structure via the second argument.
67 * \sa mood_open(), mood_cleanup_function, mood_score_function.
69 typedef int mood_parser(const char *, void **);
72 * Deallocate resources which were allocated by the mood_parser.
74 * This optional function of a mood_method is used to free any resources
75 * allocated in mood_open() by the mood_parser. The argument passed is a
76 * pointer to the mood_method specific data structure that was returned by the
81 typedef void mood_cleanup_function(void *);
84 * Used for scoring and to determine whether a file is admissible.
87 /* The name of the method. */
89 /** Pointer to the mood parser. */
91 /** Pointer to the score function */
92 mood_score_function *score_function;
93 /** Optional cleanup function. */
94 mood_cleanup_function *cleanup;
98 * Each line of the current mood corresponds to a mood_item.
101 /** The method this line is referring to. */
102 const struct mood_method *method;
103 /** The data structure computed by the mood parser. */
105 /** The given score value, or zero if none was given. */
107 /** Non-zero if random scoring was requested. */
109 /** Whether the "not" keyword was given in the mood line. */
111 /** The position in the list of items. */
112 struct list_head mood_item_node;
116 * Created from the mood definition by mood_open().
118 * When a mood is opened, each line of its definition is investigated, and a
119 * corresponding mood item is produced. Each mood line starts with \p accept,
120 * \p deny, or \p score which determines the type of the mood line. For each
121 * such type a linked list is maintained whose entries are the mood items.
123 * \sa mood_item, mood_open().
126 /** The name of this mood. */
128 /** The list of mood items of type \p accept. */
129 struct list_head accept_list;
130 /** The list of mood items of type \p deny. */
131 struct list_head deny_list;
132 /** The list of mood items of type \p score. */
133 struct list_head score_list;
136 static struct mood *current_mood;
139 * Rough approximation to sqrt.
141 * \param x Integer of which to calculate the sqrt.
143 * \return An integer res with res * res <= x.
145 static uint64_t int_sqrt(uint64_t x)
147 uint64_t op, res, one = 1;
156 if (op >= res + one) {
157 op = op - (res + one);
163 // PARA_NOTICE_LOG("sqrt(%llu) = %llu\n", x, res);
167 static int mm_played_rarely_score_function(__a_unused const char *path,
168 const struct afs_info *afsi,
169 __a_unused const struct audio_format_info *afhi,
170 __a_unused const void *data)
173 int 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 char *path,
191 __a_unused const struct afs_info *afsi,
192 __a_unused const struct audio_format_info *afhi,
195 if (fnmatch(data, path, 0))
200 static int mm_name_like_parser(const char *arg, void **data)
202 *data = para_strdup(arg);
206 static void mm_name_like_cleanup(void *data)
211 static int mm_is_set_parser(const char *arg, void **bitnum)
213 unsigned char *c = para_malloc(1);
214 int ret = get_attribute_bitnum_by_name(arg, c);
223 static int mm_is_set_score_function(__a_unused const char *path,
224 __a_unused const struct afs_info *afsi,
225 __a_unused const struct audio_format_info *afhi,
228 const unsigned char *bn = data;
229 if (afsi->attributes & (1ULL << *bn))
234 /* returns 1 if row matches score item, negative otherwise */
235 static int add_item_score(const struct osl_row *row, struct mood_item *item, long *score,
238 struct afs_info afsi;
239 struct audio_format_info afhi;
243 *score_arg_sum += item->random_score? 100 : PARA_ABS(item->score_arg);
246 ret = get_afsi_of_row(row, &afsi);
249 ret = get_afhi_of_row(row, &afhi);
252 ret = get_audio_file_path_of_row(row, &path);
255 ret = item->method->score_function(path, &afsi, &afhi,
257 if ((ret < 0 && !item->logical_not) || (ret >= 0 && item->logical_not))
258 return -1; /* no match */
260 if (item->random_score)
261 *score += PARA_ABS(ret) * para_random(100);
263 *score += PARA_ABS(ret) * item->score_arg;
267 static int compute_mood_score(const struct osl_row *aft_row, struct mood *m,
270 struct mood_item *item;
272 long score_arg_sum = 0, score = 0;
276 /* reject audio file if it matches any entry in the deny list */
277 list_for_each_entry(item, &m->deny_list, mood_item_node)
278 if (add_item_score(aft_row, item, &score, &score_arg_sum) > 0)
279 return -E_NOT_ADMISSIBLE;
280 list_for_each_entry(item, &m->accept_list, mood_item_node)
281 if (add_item_score(aft_row, item, &score, &score_arg_sum) > 0)
283 /* reject if there is no matching entry in the accept list */
284 if (!match && !list_empty(&m->accept_list))
285 return -E_NOT_ADMISSIBLE;
286 list_for_each_entry(item, &m->score_list, mood_item_node)
287 add_item_score(aft_row, item, &score, &score_arg_sum);
289 score /= score_arg_sum;
294 static const struct mood_method mood_methods[] = {
296 .parser = mm_played_rarely_parser,
297 .score_function = mm_played_rarely_score_function,
298 .name = "played_rarely"
301 .parser = mm_is_set_parser,
302 .score_function = mm_is_set_score_function,
306 .parser = mm_name_like_parser,
307 .score_function = mm_name_like_score_function,
308 .cleanup = mm_name_like_cleanup,
316 static void cleanup_list_entry(struct mood_item *item)
318 if (item->method && item->method->cleanup)
319 item->method->cleanup(item->parser_data);
321 free(item->parser_data);
322 list_del(&item->mood_item_node);
326 static void destroy_mood(struct mood *m)
328 struct mood_item *tmp, *item;
332 list_for_each_entry_safe(item, tmp, &m->accept_list, mood_item_node)
333 cleanup_list_entry(item);
334 list_for_each_entry_safe(item, tmp, &m->deny_list, mood_item_node)
335 cleanup_list_entry(item);
336 list_for_each_entry_safe(item, tmp, &m->score_list, mood_item_node)
337 cleanup_list_entry(item);
342 static struct mood *alloc_new_mood(const char *name)
344 struct mood *m = para_calloc(sizeof(struct mood));
345 m->name = para_strdup(name);
346 INIT_LIST_HEAD(&m->accept_list);
347 INIT_LIST_HEAD(&m->deny_list);
348 INIT_LIST_HEAD(&m->score_list);
352 /** The different types of a mood line. */
353 enum mood_line_type {
364 struct mood_line_parser_data {
370 * <accept [with score <score>] | deny [with score <score>] | score <score>>
371 * [if] [not] <mood_method> [options]
372 * <score> is either an integer or "random" which assigns a random score to
376 static int parse_mood_line(char *mood_line, void *data)
378 struct mood_line_parser_data *mlpd = data;
384 enum mood_line_type mlt = ML_INVALID;
385 struct mood_item *mi = NULL;
386 char *buf = para_strdup(mood_line);
389 num_words = split_args(buf, &argv, delim);
391 if (!num_words) /* empty line */
394 if (**w == '#') /* comment */
396 if (!strcmp(*w, "accept"))
398 else if (!strcmp(*w, "deny"))
400 else if (!strcmp(*w, "score"))
402 ret = -E_MOOD_SYNTAX;
403 if (mlt == ML_INVALID)
405 mi = para_calloc(sizeof(struct mood_item));
406 if (mlt != ML_SCORE) {
407 ret = -E_MOOD_SYNTAX;
411 if (!strcmp(*w, "with")) {
417 if (mlt == ML_SCORE || !strcmp(*w, "score")) {
418 ret = -E_MOOD_SYNTAX;
422 if (strcmp(*w, "random")) {
423 mi->random_score = 0;
424 ret = para_atoi32(*w, &mi->score_arg);
428 mi->random_score = 1;
430 goto success; /* the line "score random" is valid */
434 ret = -E_MOOD_SYNTAX;
438 if (!strcmp(*w, "if")) {
439 ret = -E_MOOD_SYNTAX;
444 if (!strcmp(*w, "not")) {
445 ret = -E_MOOD_SYNTAX;
452 for (i = 0; mood_methods[i].parser; i++) {
453 if (strcmp(*w, mood_methods[i].name))
457 ret = -E_MOOD_SYNTAX;
458 if (!mood_methods[i].parser)
461 ret = mood_methods[i].parser(*w, &mi->parser_data);
464 mi->method = &mood_methods[i];
467 if (mlt == ML_ACCEPT)
468 para_list_add(&mi->mood_item_node, &mlpd->m->accept_list);
469 else if (mlt == ML_DENY)
470 para_list_add(&mi->mood_item_node, &mlpd->m->deny_list);
472 para_list_add(&mi->mood_item_node, &mlpd->m->score_list);
474 PARA_DEBUG_LOG("%s entry added, method: %p\n", mlt == ML_ACCEPT? "accept" :
475 (mlt == ML_DENY? "deny" : "score"), mi->method);
483 free(mi->parser_data);
489 static int load_mood(const struct osl_row *mood_row, struct mood **m)
492 struct osl_object mood_def;
493 struct mood_line_parser_data mlpd = {.line_num = 0};
494 int ret = mood_get_name_and_def_by_row(mood_row, &mood_name, &mood_def);
500 mlpd.m = alloc_new_mood(mood_name);
501 ret = for_each_line_ro(mood_def.data, mood_def.size,
502 parse_mood_line, &mlpd);
503 osl_close_disk_object(&mood_def);
505 PARA_ERROR_LOG("unable to load mood %s: %s\n", mlpd.m->name,
506 PARA_STRERROR(-ret));
507 destroy_mood(mlpd.m);
510 PARA_INFO_LOG("loaded mood %s\n", mlpd.m->name);
516 * Calls load_mood() and reverts its error value: It returns -E_MOOD_LOADED
517 * on _success_, and 1 on errors. This way the loop over all moods stops at the
520 static int load_mood_loop_func(struct osl_row *mood_row, void *data)
522 struct mood **m = data;
523 int ret = load_mood(mood_row, m);
525 if (ret != -E_DUMMY_ROW)
526 PARA_NOTICE_LOG("invalid mood (%d), trying next mood\n", ret);
529 return -E_MOOD_LOADED;
532 static int load_first_available_mood(struct mood **m)
534 int ret = osl_rbtree_loop(moods_table, BLOBCOL_NAME, m,
535 load_mood_loop_func);
536 if (ret == -E_MOOD_LOADED) /* success */
539 return ret; /* error */
540 PARA_NOTICE_LOG("no valid mood found\n");
544 static int check_mood(struct osl_row *mood_row, void *data)
546 struct para_buffer *pb = data;
548 struct osl_object mood_def;
549 struct mood_line_parser_data mlpd = {.line_num = 0};
551 int ret = mood_get_name_and_def_by_row(mood_row, &mood_name, &mood_def);
554 para_printf(pb, "failed to get mood definition\n");
557 if (!*mood_name) /* ignore dummy row */
559 para_printf(pb, "checking mood %s...\n", mood_name);
560 ret = for_each_line_ro(mood_def.data, mood_def.size,
561 parse_mood_line, &mlpd);
563 para_printf(pb, "%s line %u: %s\n", mood_name, mlpd.line_num,
564 PARA_STRERROR(-ret));
566 osl_close_disk_object(&mood_def);
571 * Check all moods for syntax errors.
573 * \param query Unused.
574 * \param result: Contains check messages.
576 int mood_check_callback(__a_unused const struct osl_object *query,
577 struct osl_object *result)
579 struct para_buffer pb = {.buf = NULL};
581 para_printf(&pb, "checking moods...\n");
582 osl_rbtree_loop(moods_table, BLOBCOL_ID, &pb,
584 result->data = pb.buf;
585 result->size = pb.size;
590 static unsigned int_log2(uint64_t x)
602 static int64_t normalized_value(int64_t x, int64_t n, int64_t sum, int64_t qd)
606 return 100 * (n * x - sum) / (int64_t)int_sqrt(n * qd);
609 static long compute_num_played_score(struct afs_info *afsi)
611 return -normalized_value(afsi->num_played, statistics.num,
612 statistics.num_played_sum, statistics.num_played_qd);
615 static long compute_last_played_score(struct afs_info *afsi)
617 return -normalized_value(afsi->last_played, statistics.num,
618 statistics.last_played_sum, statistics.last_played_qd);
621 static long compute_dynamic_score(const struct osl_row *aft_row)
623 struct afs_info afsi;
624 int64_t score, nscore = 0, lscore = 0;
627 ret = get_afsi_of_row(aft_row, &afsi);
630 nscore = compute_num_played_score(&afsi);
631 lscore = compute_last_played_score(&afsi);
632 score = nscore + lscore;
636 static int add_afs_statistics(const struct osl_row *row)
639 struct afs_info afsi;
642 ret = get_afsi_of_row(row, &afsi);
646 x = afsi.last_played;
647 s = statistics.last_played_sum;
649 statistics.last_played_qd += (x - s / n) * (x - s / n) * n / (n + 1);
650 statistics.last_played_sum += x;
653 s = statistics.num_played_sum;
655 statistics.num_played_qd += (x - s / n) * (x - s / n) * n / (n + 1);
656 statistics.num_played_sum += x;
661 static int del_afs_statistics(const struct osl_row *row)
663 uint64_t n, s, q, a, new_s;
664 struct afs_info afsi;
666 ret = get_afsi_of_row(row, &afsi);
672 memset(&statistics, 0, sizeof(statistics));
676 s = statistics.last_played_sum;
677 q = statistics.last_played_qd;
678 a = afsi.last_played;
680 statistics.last_played_sum = new_s;
681 statistics.last_played_qd = q + s * s / n - a * a
682 - new_s * new_s / (n - 1);
684 s = statistics.num_played_sum;
685 q = statistics.num_played_qd;
688 statistics.num_played_sum = new_s;
689 statistics.num_played_qd = q + s * s / n - a * a
690 - new_s * new_s / (n - 1);
697 * Structure used during mood_open().
699 * At mood open time, we look at each file in the audio file table in order to
700 * determine whether it is admissible. If a file happens to be admissible, its
701 * mood score is computed by calling each relevant mood_score_function. Next,
702 * we update the afs_statistics and add a struct admissible_file_info to a
705 * If all files have been processed that way, the final score of each
706 * admissible file is computed by adding the dynamic score (which depends on
707 * the afs_statistics) to the mood score. Finally, all audio files in the
708 * array are added to the score table and the admissible array is freed.
710 * \sa mood_method, admissible_array.
712 struct admissible_file_info
714 /** The admissible audio file. */
715 struct osl_row *aft_row;
720 /** The temporary array of admissible files. */
721 struct admissible_array {
722 /** Files are admissible wrt. this mood. */
724 /** The size of the array */
726 /** Pointer to the array of admissible files. */
727 struct admissible_file_info *array;
731 * Add an entry to the array of admissible files.
733 * \param aft_row The audio file to be added.
734 * \param private_data Pointer to a struct admissible_file_info.
736 * \return Negative on errors, positive on success.
738 static int add_if_admissible(struct osl_row *aft_row, void *data)
740 struct admissible_array *aa = data;
744 ret = compute_mood_score(aft_row, aa->m, &score);
746 return (ret == -E_NOT_ADMISSIBLE)? 1 : ret;
747 if (statistics.num >= aa->size) {
750 aa->array = para_realloc(aa->array,
751 aa->size * sizeof(struct admissible_file_info));
753 aa->array[statistics.num].aft_row = aft_row;
754 aa->array[statistics.num].score = score;
755 ret = add_afs_statistics(aft_row);
762 * Compute the new quadratic deviation in case one element changes.
764 * \param n Number of elements.
765 * \param old_qd The quadratic deviation before the change.
766 * \param old_val The value that was replaced.
767 * \param new_val The replacement value.
768 * \param old_sum The sum of all elements before the update.
770 * \return The new quadratic deviation resulting from replacing old_val
773 * Given n real numbers a_1, ..., a_n, their sum S = a_1 + ... + a_n,
774 * their quadratic deviation
776 * q = (a_1 - S/n)^2 + ... + (a_n - S/n)^2,
778 * and a real number b, the quadratic deviation q' of a_1,...a_{n-1}, b (ie.
779 * the last number a_n was replaced by b) may be computed in O(1) time in terms
780 * of n, q, a_n, b, and S as
782 * q' = q + d * s - (2 * S + d) * d / n,
784 * where d = b - a_n, and s = b + a_n.
786 * Example: n = 3, a_1 = 3, a_2 = 5, a_3 = 7, b = 10. Then S = 15, q = 8, d = 3,
789 * q + d * s - (2 * S + d) * d / n = 8 + 51 - 33 = 26,
791 * which equals q' = (3 - 6)^2 + (5 - 6)^2 + (10 - 6)^2.
794 _static_inline_ int64_t update_quadratic_deviation(int64_t n, int64_t old_qd,
795 int64_t old_val, int64_t new_val, int64_t old_sum)
797 int64_t delta = new_val - old_val;
798 int64_t sigma = new_val + old_val;
799 return old_qd + delta * sigma - (2 * old_sum + delta) * delta / n;
802 static int update_afs_statistics(struct afs_info *old_afsi, struct afs_info *new_afsi)
805 int ret = get_num_admissible_files(&n);
811 statistics.last_played_qd = update_quadratic_deviation(n,
812 statistics.last_played_qd, old_afsi->last_played,
813 new_afsi->last_played, statistics.last_played_sum);
814 statistics.last_played_sum += new_afsi->last_played - old_afsi->last_played;
816 statistics.num_played_qd = update_quadratic_deviation(n,
817 statistics.num_played_qd, old_afsi->num_played,
818 new_afsi->num_played, statistics.num_played_sum);
819 statistics.num_played_sum += new_afsi->num_played - old_afsi->num_played;
823 static int add_to_score_table(const struct osl_row *aft_row, long mood_score)
825 long score = (compute_dynamic_score(aft_row) + mood_score) / 3;
826 return score_add(aft_row, score);
829 static int delete_from_statistics_and_score_table(const struct osl_row *aft_row)
831 int ret = del_afs_statistics(aft_row);
834 return score_delete(aft_row);
838 * Delete one entry from the statistics and from the score table.
840 * \param aft_row The audio file which is no longer admissible.
842 * \return Positive on success, negative on errors.
844 * \sa score_delete(), mood_update_audio_file().
846 int mood_delete_audio_file(const struct osl_row *aft_row)
850 ret = row_belongs_to_score_table(aft_row);
853 if (!ret) /* not admissible, nothing to do */
855 return delete_from_statistics_and_score_table(aft_row);
859 * Compute the new score of an audio file wrt. the current mood.
861 * \param aft_row Determines the audio file.
862 * \param old_afsi The audio file selector info before updating.
864 * The \a old_afsi argument may be \p NULL which indicates that no changes to
865 * the audio file info were made.
867 * \return Positive on success, negative on errors.
869 int mood_update_audio_file(const struct osl_row *aft_row, struct afs_info *old_afsi)
872 int ret, is_admissible, was_admissible = 0;
873 struct afs_info afsi;
876 return 1; /* nothing to do */
877 ret = row_belongs_to_score_table(aft_row);
880 was_admissible = ret;
881 ret = compute_mood_score(aft_row, current_mood, &score);
882 is_admissible = (ret > 0);
883 if (!was_admissible && !is_admissible)
885 if (was_admissible && !is_admissible)
886 return delete_from_statistics_and_score_table(aft_row);
887 if (!was_admissible && is_admissible) {
888 ret = add_afs_statistics(aft_row);
891 return add_to_score_table(aft_row, score);
894 ret = get_afsi_of_row(aft_row, &afsi);
898 ret = update_afs_statistics(old_afsi, &afsi);
902 score += compute_num_played_score(&afsi);
903 score += compute_last_played_score(&afsi);
905 PARA_DEBUG_LOG("score: %li\n", score);
906 percent = (score + 100) / 3;
909 else if (percent < 0)
911 PARA_DEBUG_LOG("re-inserting at %lu%%\n", percent);
912 return score_update(aft_row, percent);
915 static void log_statistics(void)
917 unsigned n = statistics.num;
920 PARA_NOTICE_LOG("no admissible files\n");
923 PARA_NOTICE_LOG("last_played mean: %lli, last_played sigma: %llu\n",
924 (long long int)(statistics.last_played_sum / n),
925 (long long unsigned)int_sqrt(statistics.last_played_qd / n));
926 PARA_NOTICE_LOG("num_played mean: %lli, num_played sigma: %llu\n",
927 (long long int)statistics.num_played_sum / n,
928 (long long unsigned)int_sqrt(statistics.num_played_qd / n));
932 * Change the current mood.
934 * \param mood_name The name of the mood to open.
936 * There are two special cases: If \a mood_name is \a NULL, load the
937 * first available mood. If \a mood_name is the empty string "", load
938 * the dummy mood that accepts every audio file and uses a scoring method
939 * based only on the \a last_played information.
941 * If there is already an open mood, it will be closed first.
943 * \return Positive on success, negative on errors. Loading the dummy mood
946 * \sa struct admissible_file_info, struct admissible_array, struct
947 * afs_info::last_played, mood_close().
949 int change_current_mood(char *mood_name)
952 struct admissible_array aa = {
959 ret = load_first_available_mood(&m);
962 destroy_mood(current_mood);
964 } else if (*mood_name) {
967 struct osl_object obj = {
969 .size = strlen(mood_name) + 1
971 ret = osl_get_row(moods_table, BLOBCOL_NAME, &obj, &row);
973 PARA_NOTICE_LOG("no such mood: %s\n", mood_name);
976 ret = load_mood(row, &m);
979 destroy_mood(current_mood);
982 destroy_mood(current_mood);
983 current_mood = alloc_new_mood("dummy");
986 PARA_NOTICE_LOG("loaded mood %s\n", current_mood->name);
987 PARA_INFO_LOG("%s\n", "computing statistics of admissible files");
988 ret = audio_file_loop(&aa, add_if_admissible);
992 PARA_NOTICE_LOG("%d admissible files \n", statistics.num);
993 for (i = 0; i < statistics.num; i++) {
994 struct admissible_file_info *a = aa.array + i;
995 ret = add_to_score_table(a->aft_row, a->score);
999 PARA_NOTICE_LOG("score add complete\n");
1007 * Close the current mood.
1009 * Free all resources of the current mood which were allocated during
1012 void close_current_mood(void)
1014 destroy_mood(current_mood);
1015 current_mood = NULL;
1016 memset(&statistics, 0, sizeof(statistics));
1020 * Close and re-open the current mood.
1022 * This function is used if changes to the audio file table or the
1023 * attribute table were made that render the current list of admissible
1024 * files useless. For example, if an attribute is removed from the
1025 * attribute table, this function is called.
1027 * \return Positive on success, negative on errors. If no mood is currently
1028 * open, the function returns success.
1030 * \sa mood_open(), mood_close().
1032 int reload_current_mood(void)
1040 mood_name = para_strdup(current_mood->name);
1041 close_current_mood();
1042 ret = change_current_mood(mood_name);