X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=mood.c;h=b1ee78e4e67faac76be61ee9c09085dfde20972f;hp=c03867c1b86a27551f24c5b97a608f9e1107d2e8;hb=869f0e06ec4e15abc9230c1b2d7615da5250802e;hpb=b0fe6d882dd35b01360a66e130d6714aff7b6a0d

diff --git a/mood.c b/mood.c
index c03867c1..b1ee78e4 100644
--- a/mood.c
+++ b/mood.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2007-2010 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2007-2012 Andre Noll <maan@systemlinux.org>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -79,13 +79,13 @@ struct mood {
 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;
@@ -107,12 +107,16 @@ static uint64_t int_sqrt(uint64_t x)
 	return res;
 }
 
-/* returns 1 if row matches score item, 0 if not. */
-static int get_item_score(struct mood_item *item, const struct afs_info *afsi,
+/*
+ * 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, match = 1;
+	int ret;
+	bool match = true;
 
 	*score_arg_sum += item->random_score? 100 : PARA_ABS(item->score_arg);
 	ret = 100;
@@ -120,7 +124,7 @@ static int get_item_score(struct mood_item *item, const struct afs_info *afsi,
 		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);
@@ -134,7 +138,8 @@ 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;
@@ -153,27 +158,29 @@ static int compute_mood_score(const struct osl_row *aft_row, struct mood *m,
 		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(item, &afsi, &afhi, path, &item_score,
+		match = get_item_score(item, &afsi, &afhi, path, &item_score,
 			&score_arg_sum);
-		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(item, &afsi, &afhi, path, &item_score,
 			&score_arg_sum);
 		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(item, &afsi, &afhi, path, &item_score,
+		match = get_item_score(item, &afsi, &afhi, path, &item_score,
 			&score_arg_sum);
-		score += item_score;
+		if (match)
+			score += item_score;
 	}
 	if (score_arg_sum)
 		score /= score_arg_sum;
@@ -364,8 +371,10 @@ 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)
@@ -422,7 +431,7 @@ out:
 void mood_check_callback(int fd, __a_unused const struct osl_object *query)
 {
 	struct para_buffer pb = {
-		.max_size = SHMMAX,
+		.max_size = shm_get_shmmax(),
 		.private_data = &fd,
 		.max_size_handler = pass_buffer_as_shm
 	};
@@ -873,7 +882,7 @@ out:
  *
  * \sa mood_open(), mood_close().
  */
-int reload_current_mood(void)
+static int reload_current_mood(void)
 {
 	int ret;
 	char *mood_name = NULL;
@@ -890,9 +899,22 @@ 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) {
@@ -905,6 +927,10 @@ 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:
@@ -926,4 +952,3 @@ int moods_event_handler(enum afs_events event, __a_unused struct para_buffer *pb
 		return 1;
 	}
 }
-