audiod: Add more detailed docu on when to use --no_default_filters.

diff --git a/ggo/audiod.m4 b/ggo/audiod.m4
index 5390d1b0fae1f50e5710ddb912297a47601269e7..4205c3f53294ac80091864d3d459c29e4207b233 100644 (file)
--- a/ggo/audiod.m4
+++ b/ggo/audiod.m4
@@ -131,16 +131,26 @@ details="
                -r 'mp3:http -i my.host.org -p 8009'
 "
 
                -r 'mp3:http -i my.host.org -p 8009'
 "
 

-

 option "no_default_filters" D
 #~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 "Configure filters manually"
 flag off
 details="
        If (and only if) this option is set, the --filter options
 option "no_default_filters" D
 #~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 "Configure filters manually"
 flag off
 details="
        If (and only if) this option is set, the --filter options

-       (see below) take effect.  Otherwise, the compiled-in default
+       (see below) take effect. Otherwise, the compiled-in default

        filters mp3dec, oggdec and aacdec are activated for mp3, ogg,
        aac streams respectively.
        filters mp3dec, oggdec and aacdec are activated for mp3, ogg,
        aac streams respectively.

+
+       You have to configure filters manually if you want to use
+       the amp filter or the compress filter which are not activated
+       by default.
+
+       Playing udp streams also requires manual filter configuration
+       because the output of the udp receiver must be fed into the
+       fecdec filter first to produce a stream which can be decoded
+       by the appropriate decoder (mp3dec, oggdec, aacdec). In other
+       words, the fecdec filter must be specified as the first filter
+       of the filter chain for any udp stream.

 "
 
 option "filter" f
 "
 
 option "filter" f