[FFmpeg-cvslog] atrac3dec: Check coding mode against channels.

[Michael Niedermayer]

ffmpeg | branch: release/1.0 | Michael Niedermayer <michaelni at gmx.at> | Fri Nov  9 13:26:20 2012 +0100| [2502914c5f8eb77659d7c0868396862557a63245] | committer: Michael Niedermayer

atrac3dec: Check coding mode against channels.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
(cherry picked from commit 13451f5520ce6b0afde861b2285dda659f8d4fb4)

Conflicts:

	libavcodec/atrac3.c

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2502914c5f8eb77659d7c0868396862557a63245
---

 libavcodec/atrac3.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavcodec/atrac3.c b/libavcodec/atrac3.c
index 7d076be..1da4c78 100644
--- a/libavcodec/atrac3.c
+++ b/libavcodec/atrac3.c
@@ -955,6 +955,11 @@ static av_cold int atrac3_decode_init(AVCodecContext *avctx)
     }
     /* Check the extradata. */
 
+    if (q->codingMode == JOINT_STEREO && avctx->channels < 2) {
+        av_log(avctx, AV_LOG_ERROR, "Invalid coding mode\n");
+        return AVERROR_INVALIDDATA;
+    }
+
     if (q->atrac3version != 4) {
         av_log(avctx,AV_LOG_ERROR,"Version %d != 4.\n",q->atrac3version);
         return AVERROR_INVALIDDATA;