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Encoder: avoid global buffer overflow on irreversible conversion when too many decomp...
1292/head
author
Even Rouault
<even.rouault@spatialys.com>
Mon, 30 Nov 2020 21:37:07 +0000
(22:37 +0100)
committer
Even Rouault
<even.rouault@spatialys.com>
Mon, 30 Nov 2020 22:29:06 +0000
(23:29 +0100)
src/lib/openjp2/dwt.c
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diff --git
a/src/lib/openjp2/dwt.c
b/src/lib/openjp2/dwt.c
index ee9eb5e63894051a5afc87d487964003f5c44047..4164ba090ea745da230307dc45a4d576d5f45c4f 100644
(file)
--- a/
src/lib/openjp2/dwt.c
+++ b/
src/lib/openjp2/dwt.c
@@
-1976,7
+1976,7
@@
void opj_dwt_calc_explicit_stepsizes(opj_tccp_t * tccp, OPJ_UINT32 prec)
if (tccp->qntsty == J2K_CCP_QNTSTY_NOQNT) {
stepsize = 1.0;
} else {
- OPJ_FLOAT64 norm = opj_dwt_
norms_real[orient][level]
;
+ OPJ_FLOAT64 norm = opj_dwt_
getnorm_real(level, orient)
;
stepsize = (1 << (gain)) / norm;
}
opj_dwt_encode_stepsize((OPJ_INT32) floor(stepsize * 8192.0),