From 4c1e509c11e7b17f7c518bc7f6d366d110b034da Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Reimar=20D=C3=B6ffinger?= <Reimar.Doeffinger@gmx.de>
Date: Fri, 30 Nov 2007 21:51:34 +0000
Subject: [PATCH] wma_decode_superframe always returns s->block_align, so make
 sure we actually consume exactly that amount. Fixes sound artefacts (mostly
 blips) that mysteriously disappeared after e.g. remuxing with mencoder.

Originally committed as revision 11115 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/wmadec.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavcodec/wmadec.c b/libavcodec/wmadec.c
index 1573e5d783..740f8b34ea 100644
--- a/libavcodec/wmadec.c
+++ b/libavcodec/wmadec.c
@@ -768,6 +768,9 @@ static int wma_decode_superframe(AVCodecContext *avctx,
         s->last_superframe_len = 0;
         return 0;
     }
+    if (buf_size < s->block_align)
+        return 0;
+    buf_size = s->block_align;
 
     samples = data;