From 8bd1f1a4c8e591e92e7f4933a89fe5de72e5563f Mon Sep 17 00:00:00 2001
From: Shitiz Garg <mail@dragooon.net>
Date: Sun, 11 Dec 2011 01:10:57 +0530
Subject: ttadec: check channel count as read from extradata.

fixes floating-point exception due to channels being set to 0.
fixes Bug 128.

Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
---
 libavcodec/tta.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'libavcodec/tta.c')

diff --git a/libavcodec/tta.c b/libavcodec/tta.c
index 6b76f527c4..c8d58fd9ec 100644
--- a/libavcodec/tta.c
+++ b/libavcodec/tta.c
@@ -221,6 +221,11 @@ static av_cold int tta_decode_init(AVCodecContext * avctx)
         s->data_length = get_bits_long(&s->gb, 32);
         skip_bits(&s->gb, 32); // CRC32 of header
 
+        if (s->channels == 0) {
+            av_log(s->avctx, AV_LOG_ERROR, "Invalid number of channels\n");
+            return AVERROR_INVALIDDATA;
+        }
+
         switch(s->bps) {
         case 2:
             avctx->sample_fmt = AV_SAMPLE_FMT_S16;
-- 
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