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[FFmpeg-devel] westwood_aud: prevent division by zero

Message ID 0efe39d2-4b45-e0b8-9b1d-9f4ccff9d235@googlemail.com
State Accepted
Commit bc7e128a6e8e2a79d0ff7cab5e8a799b3ea042ea
Headers show

Commit Message

Andreas Cadhalpun Oct. 16, 2016, 8:44 p.m. UTC 
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
---
 libavformat/westwood_aud.c | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/libavformat/westwood_aud.c b/libavformat/westwood_aud.c
index 4750167..9c2d35c 100644
--- a/libavformat/westwood_aud.c
+++ b/libavformat/westwood_aud.c
@@ -164,6 +164,12 @@  static int wsaud_read_packet(AVFormatContext *s,
         if (ret != chunk_size)
             return AVERROR(EIO);
 
+        if (st->codecpar->channels <= 0) {
+            av_log(s, AV_LOG_ERROR, "invalid number of channels %d\n",
+                   st->codecpar->channels);
+            return AVERROR_INVALIDDATA;
+        }
+
         /* 2 samples/byte, 1 or 2 samples per frame depending on stereo */
         pkt->duration = (chunk_size * 2) / st->codecpar->channels;
     }