static av_always_inline int setup_classifs(vorbis_context *vc, vorbis_residue *vr, uint8_t *do_not_decode, unsigned ch_used, int partition_count) { int p, j, i; unsigned c_p_c = vc->codebooks[vr->classbook].dimensions; unsigned inverse_class = ff_inverse[vr->classifications]; unsigned temp, temp2; for (p = 0, j = 0; j < ch_used; ++j) { if (!do_not_decode[j]) { temp = get_vlc2(&vc->gb, vc->codebooks[vr->classbook].vlc.table, vc->codebooks[vr->classbook].nb_bits, 3); av_dlog(NULL, "Classword: %u\n", temp); assert(vr->classifications > 1 && temp <= 65536); //needed for inverse[] for (i = 0; i < c_p_c; ++i) { temp2 = (((uint64_t)temp) * inverse_class) >> 32; if (partition_count + c_p_c - 1 - i < vr->ptns_to_read) vr->classifs[p + partition_count + c_p_c - 1 - i] = temp - temp2 * vr->classifications; temp = temp2; } } p += vr->ptns_to_read; } return 0; }