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ituh263dec: more complete w/h check.
Fixes a division by 0 Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -1075,6 +1075,10 @@ int ff_h263_decode_picture_header(MpegEncContext *s)
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s->qscale = get_bits(&s->gb, 5);
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}
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if (s->width == 0 || s->height == 0) {
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av_log(s->avctx, AV_LOG_ERROR, "dimensions 0\n");
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return -1;
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}
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s->mb_width = (s->width + 15) / 16;
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s->mb_height = (s->height + 15) / 16;
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s->mb_num = s->mb_width * s->mb_height;
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