j2kdec: Fix integer overflow leading to a segfault
Fixes Ticket776 Bug found by: Diana Elena Muscalu Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -321,7 +321,7 @@ int ff_j2k_dwt_init(DWTContext *s, uint16_t border[2][2], int decomp_levels, int
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int i, j, lev = decomp_levels, maxlen,
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int i, j, lev = decomp_levels, maxlen,
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b[2][2];
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b[2][2];
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if (decomp_levels >= FF_DWT_MAX_DECLVLS)
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if ((unsigned)decomp_levels >= FF_DWT_MAX_DECLVLS)
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return AVERROR_INVALIDDATA;
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return AVERROR_INVALIDDATA;
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s->ndeclevels = decomp_levels;
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s->ndeclevels = decomp_levels;
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s->type = type;
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s->type = type;
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