From 63f2670a53aaedc7a9fff14e87da575548078f4d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Reimar=20D=C3=B6ffinger?= <Reimar.Doeffinger@gmx.de>
Date: Tue, 5 Feb 2008 18:39:55 +0000
Subject: [PATCH] Check that we have enough input data in IMC decoder.

Originally committed as revision 11872 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/imc.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavcodec/imc.c b/libavcodec/imc.c
index 35702f9b72..237ff6816c 100644
--- a/libavcodec/imc.c
+++ b/libavcodec/imc.c
@@ -638,6 +638,10 @@ static int imc_decode_frame(AVCodecContext * avctx,
     int counter, bitscount;
     uint16_t buf16[IMC_BLOCK_SIZE / 2];
 
+    if (buf_size < IMC_BLOCK_SIZE) {
+        av_log(avctx, AV_LOG_ERROR, "imc frame too small!\n");
+        return -1;
+    }
     for(i = 0; i < IMC_BLOCK_SIZE / 2; i++)
         buf16[i] = bswap_16(((const uint16_t*)buf)[i]);