1 files changed, 4 insertions, 1 deletions
diff --git a/sbc/sbc.c b/sbc/sbc.c
index ca683e86..240a5d24 100644
--- a/sbc/sbc.c
+++ b/sbc/sbc.c
@@ -28,7 +28,6 @@
   use a log2 table for byte integer scale factors calculation (sum log2 results for high and low bytes)
   fill bitpool by 16 bits instead of one at a time in bits allocation/bitpool generation
   port to the dsp 
-  don't consume more bytes than passed into the encoder
 
 */
 
@@ -1390,6 +1389,10 @@ int sbc_encode(sbc_t *sbc, void *data, int count)
 		priv->init = 1;
 	}
 
+	/* input must be large enough to encode a complete frame */
+	if (count < priv->frame.subbands * priv->frame.blocks * sbc->channels * 2)
+		return 0;
+
 	ptr = data;
 
 	for (i = 0; i < priv->frame.subbands * priv->frame.blocks; i++) {