AudioEffect: explicitly show errors in lvmtest

Test: instrumented test
Change-Id: I406c23517ef401540fb497134a42abb1261d9225

media/libeffects/lvm/tests/build_and_run_all_unit_tests.sh

@@ -56,6 +56,7 @@ fs_arr=(
 
 # run multichannel effects at different configs, saving only the stereo channel
 # pair.
+error_count=0
 for flags in "${flags_arr[@]}"
 do
     for fs in ${fs_arr[*]}
@@ -65,6 +66,13 @@ do
             adb shell $testdir/lvmtest -i:$testdir/sinesweepraw.raw \
                 -o:$testdir/sinesweep_$((ch))_$((fs)).raw -ch:$ch -fs:$fs $flags
 
+            shell_ret=$?
+            if [ $shell_ret -ne 0 ]; then
+                echo "error: $shell_ret"
+                ((++error_count))
+            fi
+
+
             # two channel files should be identical to higher channel
             # computation (first 2 channels).
             # Do not compare cases where -bE is in flags (due to mono computation)
@@ -78,8 +86,17 @@ do
                     $testdir/sinesweep_$((ch))_$((fs)).raw -thr:90.308998
             fi
 
+            # both cmp and snr return EXIT_FAILURE on mismatch.
+            shell_ret=$?
+            if [ $shell_ret -ne 0 ]; then
+                echo "error: $shell_ret"
+                ((++error_count))
+            fi
+
         done
     done
 done
 
 adb shell rm -r $testdir
+echo "$error_count errors"
+exit $error_count

media/libeffects/lvm/tests/snr.cpp

@@ -84,6 +84,7 @@ int main(int argc, const char *argv[]) {
     printf("\nError: missing input/reference files\n");
     return -1;
   }
+  int ret = EXIT_SUCCESS;
   auto sn = pcm_format == 0
       ? getSignalNoise<short>(finp, fref)
       : getSignalNoise<float>(finp, fref);
@@ -92,6 +93,7 @@ int main(int argc, const char *argv[]) {
     // compare the measured snr value with threshold
     if (snr < thr) {
       printf("%.6f less than threshold %.6f\n", snr, thr);
+      ret = EXIT_FAILURE;
     } else {
       printf("%.6f\n", snr);
     }
@@ -99,5 +101,5 @@ int main(int argc, const char *argv[]) {
   fclose(finp);
   fclose(fref);
 
-  return 0;
+  return ret;
 }