Koen's decoder updates
diff --git a/src/opus_decoder.h b/src/opus_decoder.h
index 3a39c87..875bb3c 100644
--- a/src/opus_decoder.h
+++ b/src/opus_decoder.h
@@ -47,6 +47,10 @@
     int          Fs;
 };
 
+inline short ADD_SAT16(a, b) {
+    int sum = a + b;
+    return sum > 32767 ? 32767 : sum < -32768 ? -32768 : (short)sum;
+}
 
 #endif /* OPUS_DECODER_H */