OPJ_UINT32 opj_bio_read(opj_bio_t *bio, OPJ_UINT32 n) {
OPJ_INT32 i;
OPJ_UINT32 v;
v = 0;
for (i = n - 1; i >= 0; i--) {
v += opj_bio_getbit(bio) << i;
}
return v;
}
uint32_t opj_bio_read(opj_bio_t *bio, uint32_t n) {
uint32_t i;
uint32_t v;
assert((n > 0U) /* && (n <= 32U)*/);
#ifdef OPJ_UBSAN_BUILD
/* This assert fails for some corrupted images which are gracefully rejected */
/* Add this assert only for ubsan build. */
/* This is the condition for overflow not to occur below which is needed because of OPJ_NOSANITIZE */
assert(n <= 32U);
#endif
v = 0U;
for (i = n - 1; i < n; i--) { /* overflow used for end-loop condition */
v |= opj_bio_getbit(bio) << i; /* can't overflow, opj_bio_getbit returns 0 or 1 */
}
return v;
}
