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Zero-initialize tile buffer regions of skipped code-blocks, so as to make Valgrind happy

This commit is contained in:
Even Rouault 2017-08-17 16:07:19 +02:00
parent fe338a057c
commit 4b0bfbfabc
1 changed files with 51 additions and 8 deletions
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59
src/lib/openjp2/t1.c
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@ -1771,19 +1771,62 @@ void opj_t1_decode_cblks(opj_tcd_t* tcd,
for (precno = 0; precno < res->pw * res->ph; ++precno) {
opj_tcd_precinct_t* precinct = &band->precincts[precno];
OPJ_BOOL skip_precinct = OPJ_FALSE;
if (!opj_tcd_is_subband_area_of_interest(tcd,
tilec->compno,
resno,
band->bandno,
(OPJ_UINT32)precinct->x0,
(OPJ_UINT32)precinct->y0,
(OPJ_UINT32)precinct->x1,
(OPJ_UINT32)precinct->y1)) {
skip_precinct = OPJ_TRUE;
/* TODO: do a continue here once the below 0 initialization */
/* of tiledp is removed */
}
for (cblkno = 0; cblkno < precinct->cw * precinct->ch; ++cblkno) {
opj_tcd_cblk_dec_t* cblk = &precinct->cblks.dec[cblkno];
opj_t1_cblk_decode_processing_job_t* job;
if (!opj_tcd_is_subband_area_of_interest(tcd,
tilec->compno,
resno,
band->bandno,
(OPJ_UINT32)cblk->x0,
(OPJ_UINT32)cblk->y0,
(OPJ_UINT32)cblk->x1,
(OPJ_UINT32)cblk->y1)) {
if (skip_precinct ||
!opj_tcd_is_subband_area_of_interest(tcd,
tilec->compno,
resno,
band->bandno,
(OPJ_UINT32)cblk->x0,
(OPJ_UINT32)cblk->y0,
(OPJ_UINT32)cblk->x1,
(OPJ_UINT32)cblk->y1)) {
/* TODO: remove this once we don't iterate over */
/* tile pixels that are not in the subwindow of interest */
OPJ_UINT32 j, i;
OPJ_INT32 x = cblk->x0 - band->x0;
OPJ_INT32 y = cblk->y0 - band->y0;
OPJ_INT32* OPJ_RESTRICT tiledp;
OPJ_UINT32 tile_w = (OPJ_UINT32)(tilec->x1 - tilec->x0);
OPJ_UINT32 cblk_w = (OPJ_UINT32)(cblk->x1 - cblk->x0);
OPJ_UINT32 cblk_h = (OPJ_UINT32)(cblk->y1 - cblk->y0);
if (band->bandno & 1) {
opj_tcd_resolution_t* pres = &tilec->resolutions[resno - 1];
x += pres->x1 - pres->x0;
}
if (band->bandno & 2) {
opj_tcd_resolution_t* pres = &tilec->resolutions[resno - 1];
y += pres->y1 - pres->y0;
}
tiledp = &tilec->data[(OPJ_UINT32)y * tile_w +
(OPJ_UINT32)x];
for (j = 0; j < cblk_h; ++j) {
for (i = 0; i < cblk_w; ++i) {
((OPJ_INT32*)tiledp)[(j * tile_w) + i] = 0;
}
}
continue;
}