[FFmpeg-cvslog] adxdec: Validate channel count to fix a division by zero.

[Justin Ruggles]

ffmpeg | branch: master | Justin Ruggles <justin.ruggles at gmail.com> | Mon Dec 19 08:43:10 2011 -0500| [6fd075f1806e375f66ce436cca15e085f0088118] | committer: Justin Ruggles

adxdec: Validate channel count to fix a division by zero.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6fd075f1806e375f66ce436cca15e085f0088118
---

 libavcodec/adx.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/libavcodec/adx.c b/libavcodec/adx.c
index aa90fd8..1e5d89c 100644
--- a/libavcodec/adx.c
+++ b/libavcodec/adx.c
@@ -58,7 +58,7 @@ int avpriv_adx_decode_header(AVCodecContext *avctx, const uint8_t *buf,
 
     /* channels */
     avctx->channels = buf[7];
-    if (avctx->channels > 2)
+    if (avctx->channels <= 0 || avctx->channels > 2)
         return AVERROR_INVALIDDATA;
 
     /* sample rate */