X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=mood.c;h=e06382e85cf2831ce638b27d0e5b057f759faac2;hp=9f1d7745a3589565045b919af94ad02b3f73602d;hb=23b121a85984baa9252f4b4c0b8c4f186e394bb7;hpb=37f4717467d2235dba5fe403737eba66efb1dde4 diff --git a/mood.c b/mood.c index 9f1d7745..e06382e8 100644 --- a/mood.c +++ b/mood.c @@ -1,12 +1,14 @@ /* - * Copyright (C) 2007-2009 Andre Noll + * Copyright (C) 2007-2013 Andre Noll * * Licensed under the GPL v2. For licencing details see COPYING. */ /** \file mood.c Paraslash's mood handling functions. */ -#include +#include +#include + #include "para.h" #include "error.h" #include "string.h" @@ -14,6 +16,8 @@ #include "afs.h" #include "list.h" #include "ipc.h" +#include "mm.h" +#include "sideband.h" /** * Contains statistical data of the currently admissible audio files. @@ -32,67 +36,7 @@ struct afs_statistics { /** Number of admissible files */ unsigned num; }; -struct afs_statistics statistics; - -/** - * Assign scores according to a mood_method. - * - * Each mood_method has its own mood_score_function. The first three parameters - * passed to that function are informations about the audio file whose score is - * to be computed. The data argument depends on the mood method this function - * is used for. It usually is the argument given at the end of a mood line. - * - * Mood score functions must return values between -100 and +100 inclusively. - * Boolean score functions should always return either -100 or +100. - * - * \sa struct mood_method, mood_parser. - */ -typedef int mood_score_function(const char *path, const struct afs_info *afsi, - const struct afh_info *afhi, const void *data); - -/** - * Pre-process a mood line. - * - * The mood_parser of a mood_method is called once at mood open time for each - * line of the current mood definition that contains the mood_method's name as - * a keyword. The line is passed to the mood_parser as the first argument. The - * mood_parser must determine whether the line is syntactically correct and - * return a positive value if so and a negative value otherwise. - * - * Some mood parsers pre-process the data given in the mood line to compute a - * structure which depends of the particular mood_method and which is used - * later in the mood_score_function of the mood_method. The mood_parser may - * store a pointer to its structure via the second argument. - * - * \sa mood_open(), mood_cleanup_function, mood_score_function. - */ -typedef int mood_parser(const char *, void **); - -/** - * Deallocate resources which were allocated by the mood_parser. - * - * This optional function of a mood_method is used to free any resources - * allocated in mood_open() by the mood_parser. The argument passed is a - * pointer to the mood_method specific data structure that was returned by the - * mood_parser. - * - * \sa mood_parser. - */ -typedef void mood_cleanup_function(void *); - -/** - * Used for scoring and to determine whether a file is admissible. - */ -struct mood_method { - /** The name of the method. */ - const char *name; - /** Pointer to the mood parser. */ - mood_parser *parser; - /** Pointer to the score function */ - mood_score_function *score_function; - /** Optional cleanup function. */ - mood_cleanup_function *cleanup; -}; +static struct afs_statistics statistics; /** * Each line of the current mood corresponds to a mood_item. @@ -133,16 +77,20 @@ struct mood { struct list_head score_list; }; +/* + * If current_mood is NULL then no mood is currently open. If + * current_mood->name is NULL, the dummy mood is currently open + */ static struct mood *current_mood; /** - * Rough approximation to sqrt. + * Rough approximation to sqrt. * - * \param x Integer of which to calculate the sqrt. + * \param x Integer of which to calculate the sqrt. * - * \return An integer res with res * res <= x. + * \return An integer res with res * res <= x. */ -static uint64_t int_sqrt(uint64_t x) +__a_const static uint64_t int_sqrt(uint64_t x) { uint64_t op, res, one = 1; op = x; @@ -164,116 +112,24 @@ static uint64_t int_sqrt(uint64_t x) return res; } -static int mm_no_attributes_set_parser(const char *arg, __a_unused void **ignored) -{ - if (arg && *arg) - PARA_WARNING_LOG("ignored junk at eol: %s\n", arg); - return 1; -} - -static int mm_no_attributes_set_score_function(__a_unused const char *path, - const struct afs_info *afsi, - __a_unused const struct afh_info *afhi, - __a_unused const void *data) -{ - if (!afsi->attributes) - return 100; - return -100; -} - -static int mm_played_rarely_score_function(__a_unused const char *path, - const struct afs_info *afsi, - __a_unused const struct afh_info *afhi, - __a_unused const void *data) -{ - unsigned num; - int ret = get_num_admissible_files(&num); - - if (ret < 0) - return 0; - if (statistics.num_played_sum - num * afsi->num_played - > int_sqrt(statistics.num_played_qd * num)) - return 100; - return -100; -} - -static int mm_played_rarely_parser(const char *arg, __a_unused void **ignored) -{ - if (arg && *arg) - PARA_WARNING_LOG("ignored junk at eol: %s\n", arg); - return 1; -} - -static int mm_path_matches_score_function(const char *path, - __a_unused const struct afs_info *afsi, - __a_unused const struct afh_info *afhi, - const void *data) -{ - if (fnmatch(data, path, 0)) - return -100; - return 100; -} - -static int mm_path_matches_parser(const char *arg, void **data) -{ - *data = para_strdup(arg); - return 1; -} - -static void mm_path_matches_cleanup(void *data) -{ - free(data); -} - -static int mm_is_set_parser(const char *arg, void **bitnum) -{ - unsigned char *c = para_malloc(1); - int ret = get_attribute_bitnum_by_name(arg, c); - - if (ret >= 0) - *bitnum = c; - else - free(c); - return ret; -} - -static int mm_is_set_score_function(__a_unused const char *path, - __a_unused const struct afs_info *afsi, - __a_unused const struct afh_info *afhi, - const void *data) -{ - const unsigned char *bn = data; - if (afsi->attributes & (1ULL << *bn)) - return 100; - return -100; -} - -/* returns 1 if row matches score item, 0 if not, negative on errors */ -static int get_item_score(const struct osl_row *row, struct mood_item *item, - long *score, long *score_arg_sum) +/* + * Returns true if row matches, false if it does not match. In any case score + * and score_arg_sum are set/increased accordingly. + */ +static bool get_item_score(struct mood_item *item, const struct afs_info *afsi, + const struct afh_info *afhi, const char *path, long *score, + long *score_arg_sum) { - struct afs_info afsi; - struct afh_info afhi; - char *path; - int ret, match = 1; + int ret; + bool match = true; *score_arg_sum += item->random_score? 100 : PARA_ABS(item->score_arg); ret = 100; if (item->method) { - ret = get_afsi_of_row(row, &afsi); - if (ret< 0) - return ret; - ret = get_afhi_of_row(row, &afhi); - if (ret< 0) - return ret; - free(afhi.info_string); /* don't need the tag info */ - ret = get_audio_file_path_of_row(row, &path); - if (ret< 0) - return ret; - ret = item->method->score_function(path, &afsi, &afhi, + ret = item->method->score_function(path, afsi, afhi, item->parser_data); if ((ret < 0 && !item->logical_not) || (ret >= 0 && item->logical_not)) - match = 0; /* no match */ + match = false; } if (item->random_score) *score = PARA_ABS(ret) * para_random(100); @@ -287,40 +143,49 @@ static int compute_mood_score(const struct osl_row *aft_row, struct mood *m, long *result) { struct mood_item *item; - int ret, match = 0; + int ret; + bool match; long score_arg_sum = 0, score = 0, item_score; + struct afs_info afsi; + struct afh_info afhi; + char *path; if (!m) return -E_NO_MOOD; + ret = get_afsi_of_row(aft_row, &afsi); + if (ret< 0) + return ret; + ret = get_afhi_of_row(aft_row, &afhi); + if (ret< 0) + return ret; + ret = get_audio_file_path_of_row(aft_row, &path); + if (ret< 0) + return ret; /* reject audio file if it matches any entry in the deny list */ list_for_each_entry(item, &m->deny_list, mood_item_node) { - ret = get_item_score(aft_row, item, &item_score, + match = get_item_score(item, &afsi, &afhi, path, &item_score, &score_arg_sum); - if (ret < 0) - return ret; - if (ret > 0) /* not admissible */ + if (match) /* not admissible */ return 0; score += item_score; } + match = false; list_for_each_entry(item, &m->accept_list, mood_item_node) { - ret = get_item_score(aft_row, item, &item_score, + ret = get_item_score(item, &afsi, &afhi, path, &item_score, &score_arg_sum); - if (ret < 0) - return ret; if (ret == 0) continue; - match = 1; + match = true; score += item_score; } /* reject if there is no matching entry in the accept list */ if (!match && !list_empty(&m->accept_list)) return 0; list_for_each_entry(item, &m->score_list, mood_item_node) { - ret = get_item_score(aft_row, item, &item_score, + match = get_item_score(item, &afsi, &afhi, path, &item_score, &score_arg_sum); - if (ret < 0) - return ret; - score += item_score; + if (match) + score += item_score; } if (score_arg_sum) score /= score_arg_sum; @@ -328,23 +193,6 @@ static int compute_mood_score(const struct osl_row *aft_row, struct mood *m, return 1; } -#define DEFINE_MOOD_METHOD(_name) \ -.parser = mm_ ## _name ## _parser, \ -.score_function = mm_ ## _name ## _score_function, \ -.name = #_name - -#define DEFINE_MOOD_METHOD_WITH_CLEANUP(_name) \ - DEFINE_MOOD_METHOD(_name), \ - .cleanup = mm_ ## _name ## _cleanup - -static const struct mood_method mood_methods[] = { - {DEFINE_MOOD_METHOD(no_attributes_set)}, - {DEFINE_MOOD_METHOD(played_rarely)}, - {DEFINE_MOOD_METHOD(is_set)}, - {DEFINE_MOOD_METHOD_WITH_CLEANUP(path_matches)}, - {.parser = NULL} -}; - static void cleanup_list_entry(struct mood_item *item) { if (item->method && item->method->cleanup) @@ -374,7 +222,8 @@ static void destroy_mood(struct mood *m) static struct mood *alloc_new_mood(const char *name) { struct mood *m = para_calloc(sizeof(struct mood)); - m->name = para_strdup(name); + if (name) + m->name = para_strdup(name); INIT_LIST_HEAD(&m->accept_list); INIT_LIST_HEAD(&m->deny_list); INIT_LIST_HEAD(&m->score_list); @@ -412,17 +261,17 @@ static int parse_mood_line(char *mood_line, void *data) { struct mood_line_parser_data *mlpd = data; char **argv; - char *delim = " \t"; unsigned num_words; char **w; int i, ret; enum mood_line_type mlt = ML_INVALID; struct mood_item *mi = NULL; - char *buf = para_strdup(mood_line); mlpd->line_num++; - num_words = split_args(buf, &argv, delim); - ret = 1; + ret = create_argv(mood_line, " \t", &argv); + if (ret < 0) + return ret; + num_words = ret; if (!num_words) /* empty line */ goto out; w = argv; @@ -495,8 +344,8 @@ check_for_if: ret = -E_MOOD_SYNTAX; if (!mood_methods[i].parser) goto out; - w++; - ret = mood_methods[i].parser(*w, &mi->parser_data); + ret = mood_methods[i].parser(num_words - 1 - (w - argv), w, + &mi->parser_data); if (ret < 0) goto out; mi->method = &mood_methods[i]; @@ -513,8 +362,7 @@ success: (mlt == ML_DENY? "deny" : "score"), mi->method); ret = 1; out: - free(argv); - free(buf); + free_argv(argv); if (ret >= 0) return ret; if (mi) { @@ -529,14 +377,16 @@ static int load_mood(const struct osl_row *mood_row, struct mood **m) char *mood_name; struct osl_object mood_def; struct mood_line_parser_data mlpd = {.line_num = 0}; - int ret = mood_get_name_and_def_by_row(mood_row, &mood_name, &mood_def); + int ret; + *m = NULL; + ret = mood_get_name_and_def_by_row(mood_row, &mood_name, &mood_def); if (ret < 0) return ret; if (!*mood_name) return -E_DUMMY_ROW; mlpd.m = alloc_new_mood(mood_name); - ret = for_each_line_ro(mood_def.data, mood_def.size, + ret = for_each_line(FELF_READ_ONLY, mood_def.data, mood_def.size, parse_mood_line, &mlpd); osl_close_disk_object(&mood_def); if (ret < 0) { @@ -568,7 +418,7 @@ static int check_mood(struct osl_row *mood_row, void *data) ret = para_printf(pb, "checking mood %s...\n", mood_name); if (ret < 0) goto out; - ret = for_each_line_ro(mood_def.data, mood_def.size, + ret = for_each_line(FELF_READ_ONLY, mood_def.data, mood_def.size, parse_mood_line, &mlpd); if (ret < 0) para_printf(pb, "%s line %u: %s\n", mood_name, mlpd.line_num, @@ -587,9 +437,12 @@ out: void mood_check_callback(int fd, __a_unused const struct osl_object *query) { struct para_buffer pb = { - .max_size = SHMMAX, - .private_data = &fd, - .max_size_handler = pass_buffer_as_shm + .max_size = shm_get_shmmax(), + .private_data = &(struct afs_max_size_handler_data) { + .fd = fd, + .band = SBD_OUTPUT + }, + .max_size_handler = afs_max_size_handler }; int ret = para_printf(&pb, "checking moods...\n"); @@ -598,7 +451,7 @@ void mood_check_callback(int fd, __a_unused const struct osl_object *query) osl_rbtree_loop(moods_table, BLOBCOL_ID, &pb, check_mood); if (pb.offset) - pass_buffer_as_shm(pb.buf, pb.offset, &fd); + pass_buffer_as_shm(fd, SBD_OUTPUT, pb.buf, pb.offset); free(pb.buf); } @@ -961,7 +814,6 @@ void close_current_mood(void) memset(&statistics, 0, sizeof(statistics)); } - /** * Change the current mood. * @@ -993,7 +845,7 @@ int change_current_mood(char *mood_name) .data = mood_name, .size = strlen(mood_name) + 1 }; - ret = osl_get_row(moods_table, BLOBCOL_NAME, &obj, &row); + ret = osl(osl_get_row(moods_table, BLOBCOL_NAME, &obj, &row)); if (ret < 0) { PARA_NOTICE_LOG("no such mood: %s\n", mood_name); return ret; @@ -1003,9 +855,9 @@ int change_current_mood(char *mood_name) return ret; close_current_mood(); current_mood = m; - } else { + } else { /* load dummy mood */ close_current_mood(); - current_mood = alloc_new_mood("dummy"); + current_mood = alloc_new_mood(NULL); } aa.m = current_mood; PARA_NOTICE_LOG("computing statistics of admissible files\n"); @@ -1020,7 +872,7 @@ int change_current_mood(char *mood_name) if (ret < 0) goto out; } - PARA_NOTICE_LOG("loaded mood %s\n", current_mood->name); + PARA_NOTICE_LOG("loaded mood %s\n", mood_name? mood_name : "(dummy)"); ret = statistics.num; out: free(aa.array); @@ -1039,7 +891,7 @@ out: * * \sa mood_open(), mood_close(). */ -int reload_current_mood(void) +static int reload_current_mood(void) { int ret; char *mood_name = NULL; @@ -1056,9 +908,22 @@ int reload_current_mood(void) return ret; } +/** + * Notification callback for the moods table. + * + * \param event Type of the event just occurred. + * \param pb Unused. + * \param data Its type depends on the event. + * + * This function performs actions required due to the occurrence of the given + * event. Possible actions include reload of the current mood and update of the + * score of an audio file. + */ int moods_event_handler(enum afs_events event, __a_unused struct para_buffer *pb, void *data) { + int ret; + if (!current_mood) return 0; switch (event) { @@ -1071,6 +936,10 @@ int moods_event_handler(enum afs_events event, __a_unused struct para_buffer *pb case BLOB_ADD: if (data == moods_table || data == playlists_table) return 1; /* no reload necessary for these */ + ret = clear_score_table(); + if (ret < 0) + PARA_CRIT_LOG("clear score table returned %s\n", + para_strerror(-ret)); return reload_current_mood(); /* these also require reload of the score table */ case ATTRIBUTE_ADD: @@ -1092,4 +961,3 @@ int moods_event_handler(enum afs_events event, __a_unused struct para_buffer *pb return 1; } } -