Avoid divide-by-zero when frequency set to 0

1 files changed, 8 insertions, 2 deletions

diff --git a/src/synth.c b/src/synth.c
index 9c974e5..41522a6 100644
--- a/src/synth.c
+++ b/src/synth.c
@@ -94,8 +94,14 @@ static ssize_t synth_fill(xas_synth *synth,
                           xas_audio_stream *stream) {
     size_t i;
 
-    for (i=0; i<count; i++) {
-        samples[i] = synth->sample(synth);
+    if (synth->frequency > 0) {
+        for (i=0; i<count; i++) {
+            samples[i] = synth->sample(synth);
+        }
+    } else {
+        for (i=0; i<count; i++) {
+            samples[i] = 0;
+        }
     }
 
     return count;