/*
- * Copyright (C) 2007 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2007-2013 Andre Noll <maan@systemlinux.org>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
/** \file mood.c Paraslash's mood handling functions. */
+#include <regex.h>
+#include <osl.h>
+
#include "para.h"
#include "error.h"
+#include "string.h"
#include "afh.h"
#include "afs.h"
#include "list.h"
-#include "string.h"
+#include "ipc.h"
+#include "mm.h"
+#include "sideband.h"
/**
* Contains statistical data of the currently admissible audio files.
*
- * It is used to assign normalized score values to each admissbile audio file.
+ * It is used to assign normalized score values to each admissible audio file.
*/
struct afs_statistics {
- /** sum of num played over all admissible files */
+ /** Sum of num played over all admissible files. */
int64_t num_played_sum;
- /** sum of last played times over all admissible files */
+ /** Sum of last played times over all admissible files. */
int64_t last_played_sum;
- /** quadratic deviation of num played time */
+ /** Quadratic deviation of num played time. */
int64_t num_played_qd;
- /** quadratic deviation of last played time */
+ /** Quadratic deviation of last played time. */
int64_t last_played_qd;
- /** number of admissible files */
+ /** 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 parameter passed
- * to that function is a pointer to a row of the audio file table. It
- * determines the audio file for which a score is to be assigned. The second
- * 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 inclisively.
- * Boolean score functions should always return either -100 or +100.
- *
- * \sa struct mood_method, mood_parser.
- */
-typedef int mood_score_function(const struct osl_row*, void *);
-
-/**
- * Preprocess 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 preprocess 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.
/** The data structure computed by the mood parser. */
void *parser_data;
/** The given score value, or zero if none was given. */
- long score_arg;
+ int32_t score_arg;
/** Non-zero if random scoring was requested. */
int random_score;
/** Whether the "not" keyword was given in the mood line. */
*
* When a mood is opened, each line of its definition is investigated, and a
* corresponding mood item is produced. Each mood line starts with \p accept,
- * \p deny, or \p score which determins the type of the mood line. For each
+ * \p deny, or \p score which determines the type of the mood line. For each
* such type a linked list is maintained whose entries are the mood items.
*
* \sa mood_item, mood_open().
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;
return res;
}
-static int mm_played_rarely_score_function(const struct osl_row *row,
- __a_unused void *ignored)
-{
- struct afs_info afsi;
- unsigned num;
- int ret = get_afsi_of_row(row, &afsi);
-
- if (ret < 0)
- return 0;
- 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)
- PARA_WARNING_LOG("ignored junk at eol: %s\n", arg);
- return 1;
-}
-
-static int mm_name_like_score_function(const struct osl_row *row, void *preg)
-{
- char *path;
- int ret = get_audio_file_path_of_row(row, &path);
-
- if (ret < 0)
- return 0;
- ret = regexec((regex_t *)preg, path, 42, NULL, 0);
- return (ret == REG_NOMATCH)? -100 : 100;
-}
-
-static int mm_name_like_parser(const char *arg, void **regex)
-{
- regex_t *preg = para_malloc(sizeof(*preg));
- int ret = regcomp(preg, arg, REG_NOSUB);
-
- if (ret) {
- free(preg);
- return -E_MOOD_REGEX;
- }
- *regex = preg;
- return 1;
-}
-
-static void mm_name_like_cleanup(void *preg)
-{
- regfree(preg);
- free(preg);
-}
-
-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(const struct osl_row *row, void *bitnum)
-{
- unsigned char *bn = bitnum;
- struct afs_info afsi;
- int ret = get_afsi_of_row(row, &afsi);
-
- if (ret < 0)
- return 0;
- if (afsi.attributes & (1ULL << *bn))
- return 100;
- return -100;
-}
-
-/* returns 1 if row matches score item, -1 otherwise */
-static int add_item_score(const struct osl_row *row, struct mood_item *item, long *score,
+/*
+ * 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)
{
- int ret = 100;
+ int ret;
+ bool match = true;
*score_arg_sum += item->random_score? 100 : PARA_ABS(item->score_arg);
+ ret = 100;
if (item->method) {
- ret = item->method->score_function(row, item->parser_data);
+ ret = item->method->score_function(path, afsi, afhi,
+ item->parser_data);
if ((ret < 0 && !item->logical_not) || (ret >= 0 && item->logical_not))
- return -1; /* no match */
+ match = false;
}
if (item->random_score)
- *score += PARA_ABS(ret) * para_random(100);
+ *score = PARA_ABS(ret) * para_random(100);
else
- *score += PARA_ABS(ret) * item->score_arg;
- return 1;
+ *score = PARA_ABS(ret) * item->score_arg;
+ return match;
}
+/* returns 1 if row admissible, 0 if not, negative on errors */
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;
+ 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)
- if (add_item_score(aft_row, item, &score, &score_arg_sum) > 0)
- return -E_NOT_ADMISSIBLE;
- 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;
+ list_for_each_entry(item, &m->deny_list, mood_item_node) {
+ match = get_item_score(item, &afsi, &afhi, path, &item_score,
+ &score_arg_sum);
+ 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(item, &afsi, &afhi, path, &item_score,
+ &score_arg_sum);
+ if (ret == 0)
+ continue;
+ match = true;
+ score += item_score;
+ }
/* reject if there is no matching entry in the accept list */
if (!match && !list_empty(&m->accept_list))
- return -E_NOT_ADMISSIBLE;
- list_for_each_entry(item, &m->score_list, mood_item_node)
- add_item_score(aft_row, item, &score, &score_arg_sum);
+ return 0;
+ list_for_each_entry(item, &m->score_list, mood_item_node) {
+ match = get_item_score(item, &afsi, &afhi, path, &item_score,
+ &score_arg_sum);
+ if (match)
+ score += item_score;
+ }
if (score_arg_sum)
score /= score_arg_sum;
*result = score;
return 1;
}
-static const struct mood_method mood_methods[] = {
-{
- .parser = mm_played_rarely_parser,
- .score_function = mm_played_rarely_score_function,
- .name = "played_rarely"
-},
-{
- .parser = mm_is_set_parser,
- .score_function = mm_is_set_score_function,
- .name = "is_set"
-},
-{
- .parser = mm_name_like_parser,
- .score_function = mm_name_like_score_function,
- .cleanup = mm_name_like_cleanup,
- .name = "name_like"
-},
-{
- .parser = NULL
-}
-};
-
static void cleanup_list_entry(struct mood_item *item)
{
if (item->method && item->method->cleanup)
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);
ML_SCORE
};
+/** Data passed to the parser of a mood line. */
+struct mood_line_parser_data {
+ /** The mood this mood line belongs to. */
+ struct mood *m;
+ /** The line number in the mood definition. */
+ unsigned line_num;
+};
+
/*
* <accept [with score <score>] | deny [with score <score>] | score <score>>
* [if] [not] <mood_method> [options]
static int parse_mood_line(char *mood_line, void *data)
{
- struct mood *m = 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);
- num_words = split_args(buf, &argv, delim);
- ret = 1;
+ mlpd->line_num++;
+ ret = create_argv(mood_line, " \t", &argv);
+ if (ret < 0)
+ return ret;
+ num_words = ret;
if (!num_words) /* empty line */
goto out;
w = argv;
w++;
if (!*w)
goto out;
- if (!strcmp(*w, "with")) {
- w++;
- if (!*w)
- goto out;
- }
+ if (strcmp(*w, "with"))
+ goto check_for_if;
+ w++;
+ if (!*w)
+ goto out;
+ if (strcmp(*w, "score"))
+ goto out;
}
if (mlt == ML_SCORE || !strcmp(*w, "score")) {
ret = -E_MOOD_SYNTAX;
goto out;
if (strcmp(*w, "random")) {
mi->random_score = 0;
- ret = para_atol(*w, &mi->score_arg);
+ ret = para_atoi32(*w, &mi->score_arg);
if (ret < 0)
goto out;
} else {
w++;
if (!*w)
goto out;
+check_for_if:
if (!strcmp(*w, "if")) {
ret = -E_MOOD_SYNTAX;
w++;
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];
success:
- if (mlt == ML_ACCEPT)
- para_list_add(&mi->mood_item_node, &m->accept_list);
- else if (mlt == ML_DENY)
- para_list_add(&mi->mood_item_node, &m->deny_list);
- else
- para_list_add(&mi->mood_item_node, &m->score_list);
+ if (mlpd->m) {
+ if (mlt == ML_ACCEPT)
+ para_list_add(&mi->mood_item_node, &mlpd->m->accept_list);
+ else if (mlt == ML_DENY)
+ para_list_add(&mi->mood_item_node, &mlpd->m->deny_list);
+ else
+ para_list_add(&mi->mood_item_node, &mlpd->m->score_list);
+ }
PARA_DEBUG_LOG("%s entry added, method: %p\n", mlt == ML_ACCEPT? "accept" :
(mlt == ML_DENY? "deny" : "score"), mi->method);
ret = 1;
out:
- free(argv);
- free(buf);
+ free_argv(argv);
if (ret >= 0)
return ret;
if (mi) {
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;
- struct osl_object objs[NUM_BLOB_COLUMNS];
- ret = osl_get_object(moods_table, mood_row, BLOBCOL_NAME, &objs[BLOBCOL_NAME]);
+ *m = NULL;
+ ret = mood_get_name_and_def_by_row(mood_row, &mood_name, &mood_def);
if (ret < 0)
return ret;
- if (objs[BLOBCOL_NAME].size <= 1)
+ if (!*mood_name)
return -E_DUMMY_ROW;
- ret = osl_open_disk_object(moods_table, mood_row, BLOBCOL_DEF, &objs[BLOBCOL_DEF]);
- if (ret < 0)
- return ret;
- *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, *m);
- osl_close_disk_object(&objs[BLOBCOL_DEF]);
+ mlpd.m = alloc_new_mood(mood_name);
+ 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) {
- PARA_ERROR_LOG("unable to load mood %s: %s\n", (*m)->name,
- PARA_STRERROR(-ret));
- destroy_mood(*m);
+ PARA_ERROR_LOG("unable to load mood %s: %s\n", mlpd.m->name,
+ para_strerror(-ret));
+ destroy_mood(mlpd.m);
return ret;
}
- PARA_INFO_LOG("loaded mood %s\n", (*m)->name);
+ *m = mlpd.m;
return 1;
}
-/*
- * 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)
+static int check_mood(struct osl_row *mood_row, void *data)
{
- struct mood **m = data;
- int ret = load_mood(mood_row, m);
+ struct para_buffer *pb = data;
+ 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);
+
if (ret < 0) {
- if (ret != -E_DUMMY_ROW)
- PARA_NOTICE_LOG("invalid mood (%d), trying next mood\n", ret);
- return 1;
+ para_printf(pb, "failed to get mood definition: %s\n",
+ para_strerror(-ret));
+ return ret;
}
- return -E_MOOD_LOADED;
+ if (!*mood_name) /* ignore dummy row */
+ goto out;
+ ret = para_printf(pb, "checking mood %s...\n", mood_name);
+ if (ret < 0)
+ goto out;
+ 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,
+ para_strerror(-ret));
+out:
+ osl_close_disk_object(&mood_def);
+ return ret;
}
-static int load_first_available_mood(struct mood **m)
-{
- int ret = osl_rbtree_loop(moods_table, BLOBCOL_NAME, m,
- load_mood_loop_func);
- if (ret == -E_MOOD_LOADED) /* success */
- return 1;
+/**
+ * Check all moods for syntax errors.
+ *
+ * \param fd The afs socket.
+ * \param query Unused.
+ */
+void mood_check_callback(int fd, __a_unused const struct osl_object *query)
+{
+ struct para_buffer pb = {
+ .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");
if (ret < 0)
- return ret; /* error */
- PARA_NOTICE_LOG("no valid mood found\n");
- return -E_NO_MOOD;
+ return;
+ osl_rbtree_loop(moods_table, BLOBCOL_ID, &pb,
+ check_mood);
+ if (pb.offset)
+ pass_buffer_as_shm(fd, SBD_OUTPUT, pb.buf, pb.offset);
+ free(pb.buf);
}
#if 0
* \param aft_row The audio file to be added.
* \param private_data Pointer to a struct admissible_file_info.
*
- * \return Negative on errors, positive on success.
+ * \return 1 if row admissible, 0 if not, negative on errors.
*/
static int add_if_admissible(struct osl_row *aft_row, void *data)
{
long score = 0;
ret = compute_mood_score(aft_row, aa->m, &score);
- if (ret < 0)
- return (ret == -E_NOT_ADMISSIBLE)? 1 : ret;
+ if (ret <= 0)
+ return ret;
if (statistics.num >= aa->size) {
aa->size *= 2;
aa->size += 100;
*
* \param n Number of elements.
* \param old_qd The quadratic deviation before the change.
- * \param old_val The value that was repaced.
+ * \param old_val The value that was replaced.
* \param new_val The replacement value.
* \param old_sum The sum of all elements before the update.
*
}
/**
- * Delete one entry from the statitics and from the score table.
+ * Delete one entry from the statistics and from the score table.
*
* \param aft_row The audio file which is no longer admissible.
*
* \return Positive on success, negative on errors.
*
- * \sa score_delete(), mood_update_audio_file().
+ * \sa score_delete().
*/
-int mood_delete_audio_file(const struct osl_row *aft_row)
+static int mood_delete_audio_file(const struct osl_row *aft_row)
{
int ret;
- ret = row_belongs_to_score_table(aft_row);
+ ret = row_belongs_to_score_table(aft_row, NULL);
if (ret < 0)
return ret;
if (!ret) /* not admissible, nothing to do */
*
* \return Positive on success, negative on errors.
*/
-int mood_update_audio_file(const struct osl_row *aft_row, struct afs_info *old_afsi)
+static int mood_update_audio_file(const struct osl_row *aft_row,
+ struct afs_info *old_afsi)
{
long score, percent;
int ret, is_admissible, was_admissible = 0;
struct afs_info afsi;
+ unsigned rank;
if (!current_mood)
return 1; /* nothing to do */
- ret = row_belongs_to_score_table(aft_row);
+ ret = row_belongs_to_score_table(aft_row, &rank);
if (ret < 0)
return ret;
was_admissible = ret;
ret = compute_mood_score(aft_row, current_mood, &score);
+ if (ret < 0)
+ return ret;
is_admissible = (ret > 0);
if (!was_admissible && !is_admissible)
return 1;
percent = 100;
else if (percent < 0)
percent = 0;
- PARA_DEBUG_LOG("re-inserting at %lu%%\n", percent);
+ PARA_DEBUG_LOG("moving from rank %u to %lu%%\n", rank, percent);
return score_update(aft_row, percent);
}
PARA_NOTICE_LOG("no admissible files\n");
return;
}
- PARA_NOTICE_LOG("last_played mean: %lli, last_played sigma: %llu\n",
+ PARA_INFO_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",
+ PARA_INFO_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));
}
+/**
+ * Close the current mood.
+ *
+ * Free all resources of the current mood which were allocated during
+ * mood_open().
+ */
+void close_current_mood(void)
+{
+ destroy_mood(current_mood);
+ current_mood = NULL;
+ memset(&statistics, 0, sizeof(statistics));
+}
+
/**
* Change the current mood.
*
* \param mood_name The name of the mood to open.
*
- * There are two special cases: If \a mood_name is \a NULL, load the
- * first available mood. If \a mood_name is the empty string "", load
- * the dummy mood that accepts every audio file and uses a scoring method
- * based only on the \a last_played information.
+ * If \a mood_name is \a NULL, load 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.
*
.array = NULL
};
- if (!mood_name) {
- 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) {
+ if (mood_name) {
struct mood *m;
struct osl_row *row;
struct osl_object obj = {
.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;
ret = load_mood(row, &m);
if (ret < 0)
return ret;
- destroy_mood(current_mood);
+ close_current_mood();
current_mood = m;
- } else {
- destroy_mood(current_mood);
- current_mood = alloc_new_mood("dummy");
+ } else { /* load dummy mood */
+ close_current_mood();
+ current_mood = alloc_new_mood(NULL);
}
aa.m = current_mood;
- PARA_NOTICE_LOG("loaded mood %s\n", current_mood->name);
- PARA_INFO_LOG("%s\n", "computing statistics of admissible files");
+ PARA_NOTICE_LOG("computing statistics of admissible files\n");
ret = audio_file_loop(&aa, add_if_admissible);
if (ret < 0)
return ret;
log_statistics();
- PARA_NOTICE_LOG("%d admissible files \n", statistics.num);
+ PARA_INFO_LOG("%d admissible files \n", statistics.num);
for (i = 0; i < statistics.num; i++) {
struct admissible_file_info *a = aa.array + i;
ret = add_to_score_table(a->aft_row, a->score);
if (ret < 0)
goto out;
}
- PARA_NOTICE_LOG("score add complete\n");
- ret = 1;
+ PARA_NOTICE_LOG("loaded mood %s\n", mood_name? mood_name : "(dummy)");
+ ret = statistics.num;
out:
free(aa.array);
return ret;
}
-
-/**
- * Close the current mood.
- *
- * Free all resources of the current mood which were allocated during
- * mood_open().
- */
-void close_current_mood(void)
-{
- destroy_mood(current_mood);
- current_mood = NULL;
- memset(&statistics, 0, sizeof(statistics));
-}
-
/**
* Close and re-open the current mood.
*
*
* \sa mood_open(), mood_close().
*/
-int reload_current_mood(void)
+static int reload_current_mood(void)
{
int ret;
- char *mood_name;
+ char *mood_name = NULL;
if (!current_mood)
return 1;
- score_shutdown(0);
- mood_name = para_strdup(current_mood->name);
+ PARA_NOTICE_LOG("reloading %s\n", current_mood->name?
+ current_mood->name : "(dummy)");
+ if (current_mood->name)
+ mood_name = para_strdup(current_mood->name);
close_current_mood();
ret = change_current_mood(mood_name);
free(mood_name);
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) {
+ /*
+ * The three blob events might change the set of admissible files,
+ * so we must reload the score list.
+ */
+ case BLOB_RENAME:
+ case BLOB_REMOVE:
+ 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:
+ case ATTRIBUTE_REMOVE:
+ case ATTRIBUTE_RENAME:
+ return reload_current_mood();
+ /* changes to the aft only require to re-examine the audio file */
+ case AFSI_CHANGE: {
+ struct afsi_change_event_data *aced = data;
+ return mood_update_audio_file(aced->aft_row, aced->old_afsi);
+ }
+ case AFHI_CHANGE:
+ case AUDIO_FILE_RENAME:
+ case AUDIO_FILE_ADD:
+ return mood_update_audio_file(data, NULL);
+ case AUDIO_FILE_REMOVE:
+ return mood_delete_audio_file(data);
+ default:
+ return 1;
+ }
+}