From 652d81b2c2201922f0fef2bbd171299ce3798d12 Mon Sep 17 00:00:00 2001
From: Shitiz Garg <mail@dragooon.net>
Date: Thu, 15 Dec 2011 22:20:21 +0000
Subject: [PATCH] cljr: Check if width and height are positive integers

Width and height might get passed as 0 and would cause floating point
exceptions in decode_frame.
Fixes bugzilla #149

Signed-off-by: Janne Grunau <janne-libav@jannau.net>
---
 libavcodec/cljr.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavcodec/cljr.c b/libavcodec/cljr.c
index a5ee73864c..f40d4d17ce 100644
--- a/libavcodec/cljr.c
+++ b/libavcodec/cljr.c
@@ -57,6 +57,11 @@ static int decode_frame(AVCodecContext *avctx,
     if (p->data[0])
         avctx->release_buffer(avctx, p);
 
+    if (avctx->height <= 0 || avctx->width <= 0) {
+        av_log(avctx, AV_LOG_ERROR, "Invalid width or height\n");
+        return AVERROR_INVALIDDATA;
+    }
+
     if (buf_size / avctx->height < avctx->width) {
         av_log(avctx, AV_LOG_ERROR,
                "Resolution larger than buffer size. Invalid header?\n");