From b040ffc84c5e35436590e0bcea6608a2ad31cf84 Mon Sep 17 00:00:00 2001
From: Paul B Mahol <onemda@gmail.com>
Date: Thu, 19 Jul 2012 18:04:49 +0000
Subject: [PATCH] exr: display warning if multiple compression attributes are
 found

Signed-off-by: Paul B Mahol <onemda@gmail.com>
---
 libavcodec/exr.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libavcodec/exr.c b/libavcodec/exr.c
index cbd724f92b..b5c68de8d4 100644
--- a/libavcodec/exr.c
+++ b/libavcodec/exr.c
@@ -403,7 +403,10 @@ static int decode_frame(AVCodecContext *avctx,
             if (!variable_buffer_data_size)
                 return AVERROR_INVALIDDATA;
 
-            s->compr = *buf;
+            if (s->compr == -1)
+                s->compr = *buf;
+            else
+                av_log(avctx, AV_LOG_WARNING, "Found more than one compression attribute\n");
 
             buf += variable_buffer_data_size;
             continue;