Scripts: sof-testbench-helper: Separate input and output rate switches

This change does input rate changing with -r and to change
both input and output rate, need to specify both -r and -R.
With this change it's easy to test e.g. performance of 44100
to 48000 SRC with "-r 44100".

Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>

Author: singalsu

scripts/sof-testbench-helper.sh

@@ -15,7 +15,8 @@ usage() {
     echo "  -n <pipelines>, default 1,2"
     echo "  -o <output wav>, default none"
     echo "  -p <profiling result text>, use with -x, default none"
-    echo "  -r <rate>, default 48000"
+    echo "  -r <rate>, input rate, default 48000"
+    echo "  -R <rate>, output rate, default 48000"
     echo "  -t <force topology>, default none, e.g. production/sof-hda-generic.tplg"
     echo "  -v runs with valgrind, not available with -x"
     echo "  -x runs testbench with xt-run simulator"
@@ -55,7 +56,7 @@ PROFILE=false
 TPLG0=
 VALGRIND=
 
-while getopts "b:c:hi:km:n:o:p:r:t:vx" opt; do
+while getopts "b:c:hi:km:n:o:p:r:R:t:vx" opt; do
     case "${opt}" in
         b)
 	    BITS=${OPTARG}
@@ -89,6 +90,8 @@ while getopts "b:c:hi:km:n:o:p:r:t:vx" opt; do
 	    ;;
         r)
 	    RATE_IN=${OPTARG}
+	    ;;
+        R)
 	    RATE_OUT=${OPTARG}
 	    ;;
         t)