static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip, int *value, int codingset) { GetBitContext *gb = &v->s.gb; int index, escape, run = 0, level = 0, lst = 0; index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3); if (index != vc1_ac_sizes[codingset] - 1) { run = vc1_index_decode_table[codingset][index][0]; level = vc1_index_decode_table[codingset][index][1]; lst = index >= vc1_last_decode_table[codingset]; if(get_bits1(gb)) level = -level; } else { escape = decode210(gb); if (escape != 2) { index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3); run = vc1_index_decode_table[codingset][index][0]; level = vc1_index_decode_table[codingset][index][1]; lst = index >= vc1_last_decode_table[codingset]; if(escape == 0) { if(lst) level += vc1_last_delta_level_table[codingset][run]; else level += vc1_delta_level_table[codingset][run]; } else { if(lst) run += vc1_last_delta_run_table[codingset][level] + 1; else run += vc1_delta_run_table[codingset][level] + 1; } if(get_bits1(gb)) level = -level; } else { int sign; lst = get_bits1(gb); if(v->s.esc3_level_length == 0) { if(v->pq < 8 || v->dquantfrm) { // table 59 v->s.esc3_level_length = get_bits(gb, 3); if(!v->s.esc3_level_length) v->s.esc3_level_length = get_bits(gb, 2) + 8; } else { //table 60 v->s.esc3_level_length = get_unary(gb, 1, 6) + 2; } v->s.esc3_run_length = 3 + get_bits(gb, 2); } run = get_bits(gb, v->s.esc3_run_length); sign = get_bits1(gb); level = get_bits(gb, v->s.esc3_level_length); if(sign) level = -level; } } *last = lst; *skip = run; *value = level; }