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Patch by Callum Lerwick. This patch rearranges the largest memory allocations so they're allocated as late as possible, and freed as soon as possible. This cuts memory usage by about half on two large test images.

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Francois-Olivier Devaux
2007-11-14 08:45:00 +00:00
parent 61a15672bb
commit 24e189e4d8
4 changed files with 21 additions and 21 deletions
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7
libopenjpeg/t1.c
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@@ -1131,10 +1131,10 @@ void t1_decode_cblks(
opj_tcd_band_t* restrict band = &res->bands[bandno];
for (precno = 0; precno < res->pw * res->ph; ++precno) {
opj_tcd_precinct_t* prc = &band->precincts[precno];
opj_tcd_precinct_t* precinct = &band->precincts[precno];
for (cblkno = 0; cblkno < prc->cw * prc->ch; ++cblkno) {
opj_tcd_cblk_t* cblk = &prc->cblks[cblkno];
for (cblkno = 0; cblkno < precinct->cw * precinct->ch; ++cblkno) {
opj_tcd_cblk_t* cblk = &precinct->cblks[cblkno];
int* restrict datap;
void* restrict tiledp;
int cblk_w, cblk_h;
@@ -1194,6 +1194,7 @@ void t1_decode_cblks(
}
}
} /* cblkno */
opj_free(precinct->cblks);
} /* precno */
} /* bandno */
} /* resno */