From ad194b04879cb5c1b489d2453517228cf15eb4e8 Mon Sep 17 00:00:00 2001
From: Paul B Mahol <onemda@gmail.com>
Date: Tue, 25 Jun 2013 22:24:55 +0000
Subject: [PATCH] xa: abort if number of channels or sample rate is 0

Fixes #2711.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
---
 libavformat/xa.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavformat/xa.c b/libavformat/xa.c
index 437de3f433..43661dea43 100644
--- a/libavformat/xa.c
+++ b/libavformat/xa.c
@@ -84,6 +84,9 @@ static int xa_read_header(AVFormatContext *s)
     avio_skip(pb, 2);       /* Skip block align */
     avio_skip(pb, 2);       /* Skip bits-per-sample */
 
+    if (!st->codec->channels || !st->codec->sample_rate)
+        return AVERROR_INVALIDDATA;
+
     st->codec->bit_rate = av_clip(15LL * st->codec->channels * 8 *
                                   st->codec->sample_rate / 28, 0, INT_MAX);