From df72754d03b164fa2ee2baafed248cffafcda5cc Mon Sep 17 00:00:00 2001
From: Mike Melanson <mike@multimedia.cx>
Date: Sat, 31 Jan 2004 17:40:28 +0000
Subject: [PATCH] handle 0-length buffers

Originally committed as revision 2732 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/adpcm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c
index c3ae66effc..bced66f198 100644
--- a/libavcodec/adpcm.c
+++ b/libavcodec/adpcm.c
@@ -444,6 +444,9 @@ static int adpcm_decode_frame(AVCodecContext *avctx,
     int decode_top_nibble_next = 0;
     int diff_channel;
 
+    if (!buf_size)
+        return 0;
+
     samples = data;
     src = buf;