From d5bcb0fc1a352c04aa4d8bee72b2a00aafbd8fc0 Mon Sep 17 00:00:00 2001
From: Volker Fischer <corrados@users.noreply.github.com>
Date: Tue, 17 Nov 2015 18:48:07 +0000
Subject: [PATCH] in case we have invalid sizes, clear buffer to avoid a
 constant tone to be played all the time

---
 mac/sound.cpp | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/mac/sound.cpp b/mac/sound.cpp
index 75659197..3ebeb34d 100755
--- a/mac/sound.cpp
+++ b/mac/sound.cpp
@@ -568,10 +568,15 @@ OSStatus CSound::callbackIO ( AudioDeviceID          inDevice,
                 pSound->vecsTmpAudioSndCrdStereo[i] =
                     (short) ( pInData[i] * _MAXSHORT );
             }
-
-            // call processing callback function
-            pSound->ProcessCallback ( pSound->vecsTmpAudioSndCrdStereo );
         }
+        else
+        {
+            // incompatible sizes, clear work buffer
+            pSound->vecsTmpAudioSndCrdStereo.Reset ( 0 );
+        }
+
+        // call processing callback function
+        pSound->ProcessCallback ( pSound->vecsTmpAudioSndCrdStereo );
     }
     else
     {