From: Paul B Mahol <onemda@gmail.com>
Date: Fri, 7 Dec 2012 13:05:43 +0000 (+0000)
Subject: lavf/pcm: check size, do not produce invalid packets
X-Git-Tag: android-x86-4.4-r1~7417
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=8ca8b43d7108b9d7e6887fd553d13a71afa670c6;p=android-x86%2Fexternal-ffmpeg.git

lavf/pcm: check size, do not produce invalid packets

Inspired by 92b8c9d89e7ae86bffa05393bb230d5a165b0148.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
---

diff --git a/libavformat/pcm.c b/libavformat/pcm.c
index 71f6a4f653..2fe44dcb40 100644
--- a/libavformat/pcm.c
+++ b/libavformat/pcm.c
@@ -30,6 +30,8 @@ int ff_pcm_read_packet(AVFormatContext *s, AVPacket *pkt)
     int ret, size;
 
     size= RAW_SAMPLES*s->streams[0]->codec->block_align;
+    if (size <= 0)
+        return AVERROR(EINVAL);
 
     ret= av_get_packet(s->pb, pkt, size);