Support AWM_SEEDS for testing with multiple --seed values.

Signed-off-by: Stefan Westerfeld <stefan@space.twc.de>

src/ber-test.sh

@@ -5,6 +5,9 @@ TRANSFORM=$1
 if [ "x$AWM_SET" == "x" ]; then
   AWM_SET=small
 fi
+if [ "x$AWM_SEEDS" == "x" ]; then
+  AWM_SEEDS=0
+fi
 
 {
   if [ "x$AWM_SET" == "xsmall" ]; then
@@ -17,8 +20,10 @@ fi
   fi
 } | while read i
 do
+  for SEED in $AWM_SEEDS
+  do
     echo $i
-  audiowmark add "$i" t.wav $PATTERN $AWM_PARAMS >/dev/null
+    audiowmark add "$i" t.wav $PATTERN $AWM_PARAMS --seed $SEED >/dev/null
     if [ "x$TRANSFORM" == "xmp3" ]; then
       if [ "x$2" == "x" ]; then
         echo "need mp3 bitrate" >&2
@@ -66,5 +71,6 @@ do
       echo "unknown transform $TRANSFORM" >&2
       exit 1
     fi
-  audiowmark cmp t.wav $PATTERN $AWM_PARAMS
+    audiowmark cmp t.wav $PATTERN $AWM_PARAMS --seed $SEED
+  done
 done | grep bit_error_rate | awk '{ er += $2; n++; if ($2 > max_er) max_er = $2;} END { print er / n, max_er; }'