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dvbsubdec: fix division by zero in compute_default_clut

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This problem was introduced in commit
4b90dcb849.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
(cherry picked from commit c82b8ef0e4)
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
This commit is contained in:
Andreas Cadhalpun 2016-11-08 22:32:42 +01:00
parent 5c55f9881e
commit 2260c0776a
1 changed files with 1 additions and 1 deletions
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2
libavcodec/dvbsubdec.c
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@ -810,7 +810,7 @@ static void compute_default_clut(AVPicture *frame, int w, int h)
list_inv[ i ] = bestv;
}
count = i - 1;
count = FFMAX(i - 1, 1);
for (i--; i>=0; i--) {
int v = i*255/count;
AV_WN32(frame->data[1] + 4*list_inv[i], RGBA(v/2,v,v/2,v));