X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=README.afs;h=edd2d17be98591391a7d3ceab0a820cf12b77763;hp=ca01df6ac678a7cb3b1be14ac5957a1ddb1a4137;hb=f8ea51cdb591ef482806563a862e1ef28c2ed89c;hpb=002731cd3938f3be6b71651e56c062af1adcdec0

diff --git a/README.afs b/README.afs
index ca01df6a..edd2d17b 100644
--- a/README.afs
+++ b/README.afs
@@ -78,10 +78,10 @@ A mood consists of a unique name and its *mood definition*, which is
 a set of *mood lines* containing expressions in terms of attributes
 and other data contained in the database.
 
-A mood defines a subset of audio files called the *admissible audio
-files* for that mood. At any time, at most one mood can be *active*
-which means that para_server is going to select only files from that
-subset of admissible files.
+A mood defines a subset of audio files called the *admissible audio files*
+for that mood. At any time, at most one mood can be *active* which
+means that para_server is going to select only files from that subset
+of admissible files.
 
 So in order to create a mood definition one has to write a set of
 mood lines. Mood lines come in three flavours: Accept lines, deny
@@ -156,20 +156,42 @@ List of mood_methods
 Takes no arguments and matches an audio file if and only if no
 attributes are set.
 
-	played_rarely
-
-Takes no arguments and matches all audio files where the number of
-times this audio file was selected is below the average.
-
-	is_set attribute_name
+	is_set <attribute_name>
 
 Takes the name of an attribute and matches iff that attribute is set.
 
-	path_matches pattern
+	path_matches <pattern>
 
 Takes a filename pattern and matches iff the path of the audio file
 matches the pattern.
 
+	artist_matches <pattern>
+	album_matches <pattern>
+	title_matches <pattern>
+	comment_matches <pattern>
+
+Takes an extended regular expression and matches iff the text of the
+corresponding tag of the audio file matches the pattern. If the tag
+is not set, the empty string is matched against the pattern.
+
+	year ~ <num>
+	bitrate ~ <num>
+	frequency ~ <num>
+	channels ~ <num>
+
+Takes a comparator ~ of the set {<, =, <=, >, >=, !=} and a number
+<num>. Matches an audio file iff the condition <val> ~ <num> is
+satisfied where val is the corresponding value of the audio file
+(bitrate in kbit/s, frequency in Hz, channel count, value of the
+year tag).
+
+The year tag is special as its value is undefined if the audio file
+has no year tag or the content of the year tag is not a number. Such
+audio files never match. Another difference is the special treatment
+if the year tag is a two-digit number. In this case either 1900 or
+2000 are added to the tag value, depending on whether the number is
+greater than 2000 plus the current year.
+
 
 ----------
 Mood usage