X-Git-Url: http://git.tuebingen.mpg.de/?a=blobdiff_plain;f=mood.c;h=7d207f0b965cab0c7fe6b5216d97c49e511085c9;hb=2cf578ff33b17cea17bfd52e2c084efa970faad4;hp=996b71fac99257758e2a5d8cad9d6c018cf1ba06;hpb=cb6d1dfb9e4067229a4bbde0abd05784d97ef14b;p=paraslash.git diff --git a/mood.c b/mood.c index 996b71fa..7d207f0b 100644 --- a/mood.c +++ b/mood.c @@ -1,3 +1,11 @@ +/* + * Copyright (C) 2007 Andre Noll + * + * Licensed under the GPL v2. For licencing details see COPYING. + */ + +/** \file mood.c Paraslash's mood handling functions. */ + #include "para.h" #include "error.h" #include "afh.h" @@ -5,8 +13,6 @@ #include "list.h" #include "string.h" -/** \file mood.c Paraslash's mood handling functions. */ - /** * Contains statistical data of the currently admissible audio files. * @@ -115,7 +121,7 @@ struct mood_item { * \sa mood_item, mood_open(). */ struct mood { - /** the name of this mood */ + /** The name of this mood. */ char *name; /** The list of mood items of type \p accept. */ struct list_head accept_list; @@ -237,7 +243,7 @@ static int mm_is_set_score_function(const struct osl_row *row, void *bitnum) } /* returns 1 if row matches score item, -1 otherwise */ -static int add_item_score(const void *row, struct mood_item *item, long *score, +static int add_item_score(const struct osl_row *row, struct mood_item *item, long *score, long *score_arg_sum) { int ret = 100; @@ -255,28 +261,27 @@ static int add_item_score(const void *row, struct mood_item *item, long *score, return 1; } -static int compute_mood_score(const void *row, long *result) +static int compute_mood_score(const struct osl_row *aft_row, struct mood *m, + long *result) { struct mood_item *item; int match = 0; long score_arg_sum = 0, score = 0; - if (!current_mood) + if (!m) return -E_NO_MOOD; /* reject audio file if it matches any entry in the deny list */ - list_for_each_entry(item, ¤t_mood->deny_list, mood_item_node) - if (add_item_score(row, item, &score, &score_arg_sum) > 0) + list_for_each_entry(item, &m->deny_list, mood_item_node) + if (add_item_score(aft_row, item, &score, &score_arg_sum) > 0) return -E_NOT_ADMISSIBLE; - list_for_each_entry(item, ¤t_mood->accept_list, mood_item_node) - if (add_item_score(row, item, &score, &score_arg_sum) > 0) + list_for_each_entry(item, &m->accept_list, mood_item_node) + if (add_item_score(aft_row, item, &score, &score_arg_sum) > 0) match = 1; /* reject if there is no matching entry in the accept list */ - if (!match && !list_empty(¤t_mood->accept_list)) + if (!match && !list_empty(&m->accept_list)) return -E_NOT_ADMISSIBLE; - list_for_each_entry(item, ¤t_mood->score_list, mood_item_node) { - PARA_INFO_LOG("random: %d\n", para_random(100)); - add_item_score(row, item, &score, &score_arg_sum); - } + list_for_each_entry(item, &m->score_list, mood_item_node) + add_item_score(aft_row, item, &score, &score_arg_sum); if (score_arg_sum) score /= score_arg_sum; *result = score; @@ -360,9 +365,9 @@ enum mood_line_type { * all matching files */ -/* TODO: Use current_mood as private_data*/ -static int parse_mood_line(char *mood_line, __a_unused void *private_data) +static int parse_mood_line(char *mood_line, void *data) { + struct mood *m = data; char **argv; char *delim = " \t"; unsigned num_words; @@ -370,7 +375,6 @@ static int parse_mood_line(char *mood_line, __a_unused void *private_data) int i, ret; enum mood_line_type mlt = ML_INVALID; struct mood_item *mi = NULL; - struct mood *m = current_mood; char *buf = para_strdup(mood_line); num_words = split_args(buf, &argv, delim); @@ -471,42 +475,42 @@ out: return ret; } -static int load_mood(const void *row) +static int load_mood(const struct osl_row *mood_row, struct mood **m) { int ret; - struct mood *new_mood, *old_mood = current_mood; struct osl_object objs[NUM_BLOB_COLUMNS]; - ret = osl_get_object(moods_table, row, BLOBCOL_NAME, &objs[BLOBCOL_NAME]); + ret = osl_get_object(moods_table, mood_row, BLOBCOL_NAME, &objs[BLOBCOL_NAME]); if (ret < 0) return ret; if (objs[BLOBCOL_NAME].size <= 1) return -E_DUMMY_ROW; - ret = osl_open_disk_object(moods_table, row, BLOBCOL_DEF, &objs[BLOBCOL_DEF]); + ret = osl_open_disk_object(moods_table, mood_row, BLOBCOL_DEF, &objs[BLOBCOL_DEF]); if (ret < 0) return ret; - new_mood = alloc_new_mood((char*)objs[BLOBCOL_NAME].data); - current_mood = new_mood; + *m = alloc_new_mood((char*)objs[BLOBCOL_NAME].data); ret = for_each_line_ro(objs[BLOBCOL_DEF].data, objs[BLOBCOL_DEF].size, - parse_mood_line, NULL); + parse_mood_line, *m); osl_close_disk_object(&objs[BLOBCOL_DEF]); if (ret < 0) { - PARA_ERROR_LOG("unable to load mood %s: %d\n", - (char *)objs[BLOBCOL_NAME].data, ret); - destroy_mood(new_mood); - current_mood = old_mood; + PARA_ERROR_LOG("unable to load mood %s: %s\n", (*m)->name, + PARA_STRERROR(-ret)); + destroy_mood(*m); return ret; } - destroy_mood(old_mood); - current_mood = new_mood; - PARA_INFO_LOG("loaded mood %s\n", current_mood->name); + PARA_INFO_LOG("loaded mood %s\n", (*m)->name); return 1; } -/* returns -E_MOOD_LOADED on _success_ to terminate the loop */ -static int mood_loop(struct osl_row *row, __a_unused void *private_data) +/* + * Calls load_mood() and reverts its error value: It returns -E_MOOD_LOADED + * on _success_, and 1 on errors. This way the loop over all moods stops at the + * first valid mood. + */ +static int load_mood_loop_func(struct osl_row *mood_row, void *data) { - int ret = load_mood(row); + struct mood **m = data; + int ret = load_mood(mood_row, m); if (ret < 0) { if (ret != -E_DUMMY_ROW) PARA_NOTICE_LOG("invalid mood (%d), trying next mood\n", ret); @@ -515,10 +519,10 @@ static int mood_loop(struct osl_row *row, __a_unused void *private_data) return -E_MOOD_LOADED; } -static int load_first_available_mood(void) +static int load_first_available_mood(struct mood **m) { - int ret = osl_rbtree_loop(moods_table, BLOBCOL_NAME, NULL, - mood_loop); + int ret = osl_rbtree_loop(moods_table, BLOBCOL_NAME, m, + load_mood_loop_func); if (ret == -E_MOOD_LOADED) /* success */ return 1; if (ret < 0) @@ -653,13 +657,15 @@ static int del_afs_statistics(const struct osl_row *row) struct admissible_file_info { /** The admissible audio file. */ - void *aft_row; + struct osl_row *aft_row; /** Its score. */ long score; }; /** The temporary array of admissible files. */ struct admissible_array { + /** Files are admissible wrt. this mood. */ + struct mood *m; /** The size of the array */ unsigned size; /** Pointer to the array of admissible files. */ @@ -674,14 +680,13 @@ struct admissible_array { * * \return Negative on errors, positive on success. */ -static int add_if_admissible(struct osl_row *aft_row, void *private_data) +static int add_if_admissible(struct osl_row *aft_row, void *data) { + struct admissible_array *aa = data; int ret; - struct admissible_array *aa = private_data; long score = 0; - score = 0; - ret = compute_mood_score(aft_row, &score); + ret = compute_mood_score(aft_row, aa->m, &score); if (ret < 0) return (ret == -E_NOT_ADMISSIBLE)? 1 : ret; if (statistics.num >= aa->size) { @@ -796,7 +801,7 @@ int mood_delete_audio_file(const struct osl_row *aft_row) } /** - * Compute the new score of an audio file. + * Compute the new score of an audio file wrt. the current mood. * * \param aft_row Determines the audio file. * \param old_afsi The audio file selector info before updating. @@ -818,7 +823,7 @@ int mood_update_audio_file(const struct osl_row *aft_row, struct afs_info *old_a if (ret < 0) return ret; was_admissible = ret; - ret = compute_mood_score(aft_row, &score); + ret = compute_mood_score(aft_row, current_mood, &score); is_admissible = (ret > 0); if (!was_admissible && !is_admissible) return 1; @@ -842,13 +847,13 @@ int mood_update_audio_file(const struct osl_row *aft_row, struct afs_info *old_a score += compute_num_played_score(&afsi); score += compute_last_played_score(&afsi); score /= 3; - PARA_NOTICE_LOG("score: %li\n", score); + PARA_DEBUG_LOG("score: %li\n", score); percent = (score + 100) / 3; if (percent > 100) percent = 100; else if (percent < 0) percent = 0; - PARA_NOTICE_LOG("re-inserting at %lu%%\n", percent); + PARA_DEBUG_LOG("re-inserting at %lu%%\n", percent); return score_update(aft_row, percent); } @@ -860,14 +865,16 @@ static void log_statistics(void) PARA_NOTICE_LOG("no admissible files\n"); return; } - PARA_NOTICE_LOG("last_played mean: %lli, last_played sigma: %lli\n", - statistics.last_played_sum / n, int_sqrt(statistics.last_played_qd / n)); - PARA_NOTICE_LOG("num_played mean: %lli, num_played sigma: %lli\n", - statistics.num_played_sum / n, int_sqrt(statistics.num_played_qd / n)); + PARA_NOTICE_LOG("last_played mean: %lli, last_played sigma: %llu\n", + (long long int)(statistics.last_played_sum / n), + (long long unsigned)int_sqrt(statistics.last_played_qd / n)); + PARA_NOTICE_LOG("num_played mean: %lli, num_played sigma: %llu\n", + (long long int)statistics.num_played_sum / n, + (long long unsigned)int_sqrt(statistics.num_played_qd / n)); } /** - * Open the given mood. + * Change the current mood. * * \param mood_name The name of the mood to open. * @@ -876,13 +883,15 @@ static void log_statistics(void) * the dummy mood that accepts every audio file and uses a scoring method * based only on the \a last_played information. * + * If there is already an open mood, it will be closed first. + * * \return Positive on success, negative on errors. Loading the dummy mood * always succeeds. * * \sa struct admissible_file_info, struct admissible_array, struct * afs_info::last_played, mood_close(). */ -int mood_open(char *mood_name) +int change_current_mood(char *mood_name) { int i, ret; struct admissible_array aa = { @@ -891,10 +900,14 @@ int mood_open(char *mood_name) }; if (!mood_name) { - ret = load_first_available_mood(); + struct mood *m; + ret = load_first_available_mood(&m); if (ret < 0) return ret; + destroy_mood(current_mood); + current_mood = m; } else if (*mood_name) { + struct mood *m; struct osl_row *row; struct osl_object obj = { .data = mood_name, @@ -905,13 +918,16 @@ int mood_open(char *mood_name) PARA_NOTICE_LOG("no such mood: %s\n", mood_name); return ret; } - ret = load_mood(row); + ret = load_mood(row, &m); if (ret < 0) return ret; + destroy_mood(current_mood); + current_mood = m; } else { destroy_mood(current_mood); current_mood = alloc_new_mood("dummy"); } + aa.m = current_mood; PARA_NOTICE_LOG("loaded mood %s\n", current_mood->name); PARA_INFO_LOG("%s\n", "computing statistics of admissible files"); ret = audio_file_loop(&aa, add_if_admissible); @@ -938,7 +954,7 @@ out: * Free all resources of the current mood which were allocated during * mood_open(). */ -void mood_close(void) +void close_current_mood(void) { destroy_mood(current_mood); current_mood = NULL; @@ -958,7 +974,7 @@ void mood_close(void) * * \sa mood_open(), mood_close(). */ -int mood_reload(void) +int reload_current_mood(void) { int ret; char *mood_name; @@ -967,8 +983,8 @@ int mood_reload(void) return 1; score_shutdown(0); mood_name = para_strdup(current_mood->name); - mood_close(); - ret = mood_open(mood_name); + close_current_mood(); + ret = change_current_mood(mood_name); free(mood_name); return ret; }