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opj_j2k_check_poc_val(): fix starting index for checking layer dimension 

The standard mandates that the layer index always starts at zero for every
progression.
This commit is contained in:
Even Rouault 2019-04-25 00:28:05 +02:00
parent 1e3a57563d
commit 6589c609f6
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GPG Key ID: 33EBBFC47B3DD87D
1 changed files with 7 additions and 35 deletions
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42
src/lib/openjp2/j2k.c
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@ -1628,7 +1628,10 @@ static OPJ_BOOL opj_j2k_check_poc_val(const opj_poc_t *p_pocs,
OPJ_UINT32 step_r = p_num_comps * step_c;
OPJ_UINT32 step_l = p_nb_resolutions * step_r;
OPJ_BOOL loss = OPJ_FALSE;
OPJ_UINT32 layno0 = 0;
if (p_nb_pocs == 0) {
return OPJ_TRUE;
}
packet_array = (OPJ_UINT32*) opj_calloc(step_l * p_num_layers,
sizeof(OPJ_UINT32));
@ -1638,39 +1641,8 @@ static OPJ_BOOL opj_j2k_check_poc_val(const opj_poc_t *p_pocs,
return OPJ_FALSE;
}
if (p_nb_pocs == 0) {
opj_free(packet_array);
return OPJ_TRUE;
}
index = step_r * p_pocs->resno0;
/* take each resolution for each poc */
for (resno = p_pocs->resno0 ; resno < p_pocs->resno1 ; ++resno) {
OPJ_UINT32 res_index = index + p_pocs->compno0 * step_c;
/* take each comp of each resolution for each poc */
for (compno = p_pocs->compno0 ; compno < p_pocs->compno1 ; ++compno) {
OPJ_UINT32 comp_index = res_index + layno0 * step_l;
/* and finally take each layer of each res of ... */
for (layno = layno0; layno < p_pocs->layno1 ; ++layno) {
/*index = step_r * resno + step_c * compno + step_l * layno;*/
packet_array[comp_index] = 1;
comp_index += step_l;
}
res_index += step_c;
}
index += step_r;
}
++p_pocs;
/* iterate through all the pocs */
for (i = 1; i < p_nb_pocs ; ++i) {
OPJ_UINT32 l_last_layno1 = (p_pocs - 1)->layno1 ;
layno0 = (p_pocs->layno1 > l_last_layno1) ? l_last_layno1 : 0;
for (i = 0; i < p_nb_pocs ; ++i) {
index = step_r * p_pocs->resno0;
/* take each resolution for each poc */
@ -1679,11 +1651,12 @@ static OPJ_BOOL opj_j2k_check_poc_val(const opj_poc_t *p_pocs,
/* take each comp of each resolution for each poc */
for (compno = p_pocs->compno0 ; compno < p_pocs->compno1 ; ++compno) {
/* The layer index always starts at zero for every progression. */
const OPJ_UINT32 layno0 = 0;
OPJ_UINT32 comp_index = res_index + layno0 * step_l;
/* and finally take each layer of each res of ... */
for (layno = layno0; layno < p_pocs->layno1 ; ++layno) {
/*index = step_r * resno + step_c * compno + step_l * layno;*/
packet_array[comp_index] = 1;
comp_index += step_l;
}
@ -1709,7 +1682,6 @@ static OPJ_BOOL opj_j2k_check_poc_val(const opj_poc_t *p_pocs,
layno, resno, compno);
}
#endif
/*index = step_r * resno + step_c * compno + step_l * layno;*/
index += step_c;
}
}