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

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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@niedermayer.cc>
(cherry picked from commit a8de60ba2740185c53cabbee6c00ed67a0d530e2)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-05-10 19:02:05 +02:00
parent 507ed0ab52
commit 85d4892cb9
1 changed files with 1 additions and 1 deletions
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libavcodec/eatqi.c
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@ -93,7 +93,7 @@ static inline void tqi_idct_put(TqiContext *t, AVFrame *frame, int16_t (*block)[
static void tqi_calculate_qtable(MpegEncContext *s, int quant) static void tqi_calculate_qtable(MpegEncContext *s, int quant)
{ {
const int qscale = (215 - 2*quant)*5; const int64_t qscale = (215 - 2*quant)*5;
int i; int i;
s->intra_matrix[0] = (ff_inv_aanscales[0]*ff_mpeg1_default_intra_matrix[0])>>11; s->intra_matrix[0] = (ff_inv_aanscales[0]*ff_mpeg1_default_intra_matrix[0])>>11;
for(i=1; i<64; i++) for(i=1; i<64; i++)