From b4483a531a139f304f4370f470325facb107202f Mon Sep 17 00:00:00 2001
From: Laurent Aimar <fenrir@videolan.org>
Date: Thu, 29 Sep 2011 01:04:54 +0200
Subject: [PATCH] Check for unsupported parameters in ff_j2k_dwt_init()

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
 libavcodec/j2k_dwt.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/j2k_dwt.c b/libavcodec/j2k_dwt.c
index 9ba770ad83..ab7a1ab757 100644
--- a/libavcodec/j2k_dwt.c
+++ b/libavcodec/j2k_dwt.c
@@ -321,6 +321,8 @@ int ff_j2k_dwt_init(DWTContext *s, uint16_t border[2][2], int decomp_levels, int
     int i, j, lev = decomp_levels, maxlen,
         b[2][2];
 
+    if (decomp_levels >= FF_DWT_MAX_DECLVLS)
+        return AVERROR_INVALIDDATA;
     s->ndeclevels = decomp_levels;
     s->type = type;