[FFmpeg-cvslog] avcodec/wmaprodec: Fix overflow of cutoff

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Sat Dec  5 13:11:23 2015 +0100| [0c56f8303e676556ea09bfac73d881c6c9057259] | committer: Michael Niedermayer

avcodec/wmaprodec: Fix overflow of cutoff

Fixes: 129ca3e28d73af7b1e24a9d4118e7a2d/signal_sigabrt_7ffff6ae7cc9_836_762b310fc3ef6087bd7771e5d8e90b9b.asf

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0c56f8303e676556ea09bfac73d881c6c9057259
---

 libavcodec/wmaprodec.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/wmaprodec.c b/libavcodec/wmaprodec.c
index 4224785..5396733 100644
--- a/libavcodec/wmaprodec.c
+++ b/libavcodec/wmaprodec.c
@@ -528,7 +528,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
     /** calculate subwoofer cutoff values */
     for (i = 0; i < num_possible_block_sizes; i++) {
         int block_size = s->samples_per_frame >> i;
-        int cutoff = (440*block_size + 3 * (s->avctx->sample_rate >> 1) - 1)
+        int cutoff = (440*block_size + 3LL * (s->avctx->sample_rate >> 1) - 1)
                      / s->avctx->sample_rate;
         s->subwoofer_cutoffs[i] = av_clip(cutoff, 4, block_size);
     }