From 6e0f746d3eac0b07b9f5e4216d45ad70ca17fe62 Mon Sep 17 00:00:00 2001
From: Kostya Shishkov <kostya.shishkov@gmail.com>
Date: Thu, 23 Apr 2009 18:21:16 +0000
Subject: [PATCH] Handle WavPack INT32INFO chunks with nonzero post shift

Originally committed as revision 18668 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/wavpack.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c
index 4a7a9e5c6b..e0db0168aa 100644
--- a/libavcodec/wavpack.c
+++ b/libavcodec/wavpack.c
@@ -780,12 +780,14 @@ static int wavpack_decode_frame(AVCodecContext *avctx,
             got_hybrid = 1;
             break;
         case WP_ID_INT32INFO:
-            if(size != 4 || *buf){
+            if(size != 4){
                 av_log(avctx, AV_LOG_ERROR, "Invalid INT32INFO, size = %i, sent_bits = %i\n", size, *buf);
                 buf += ssize;
                 continue;
             }
-            if(buf[1])
+            if(buf[0])
+                s->post_shift = buf[0];
+            else if(buf[1])
                 s->shift = buf[1];
             else if(buf[2]){
                 s->and = s->or = 1;