[FFmpeg-cvslog] avcodec/eatqi: Fix runtime error: signed integer overflow: 4466147 * 1075 cannot be represented in type 'int'

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Wed May 10 19:02:05 2017 +0200| [a8de60ba2740185c53cabbee6c00ed67a0d530e2] | committer: Michael Niedermayer

avcodec/eatqi: Fix runtime error: signed integer overflow: 4466147 * 1075 cannot be represented in type 'int'

Fixes: 1443/clusterfuzz-testcase-minimized-4826998612426752

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a8de60ba2740185c53cabbee6c00ed67a0d530e2
---

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

diff --git a/libavcodec/eatqi.c b/libavcodec/eatqi.c
index f5ecacb984..725289448a 100644
--- a/libavcodec/eatqi.c
+++ b/libavcodec/eatqi.c
@@ -112,7 +112,7 @@ static inline void tqi_idct_put(AVCodecContext *avctx, AVFrame *frame,
 
 static void tqi_calculate_qtable(TqiContext *t, int quant)
 {
-    const int qscale = (215 - 2*quant)*5;
+    const int64_t qscale = (215 - 2*quant)*5;
     int i;
 
     t->intra_matrix[0] = (ff_inv_aanscales[0] * ff_mpeg1_default_intra_matrix[0]) >> 11;