static void init_uni_ac_vlc(RLTable *rl, uint8_t *uni_ac_vlc_len){ int i; for(i=0; i<128; i++){ int level= i-64; int run; for(run=0; run<64; run++){ int len, bits, code; int alevel= FFABS(level); int sign= (level>>31)&1; if (alevel > rl->max_level[0][run]) code= 111; /*rl->n*/ else code= rl->index_run[0][run] + alevel - 1; if (code < 111 /* rl->n */) { /* store the vlc & sign at once */ len= rl->table_vlc[code][1]+1; bits= (rl->table_vlc[code][0]<<1) + sign; } else { len= rl->table_vlc[111/*rl->n*/][1]+6; bits= rl->table_vlc[111/*rl->n*/][0]<<6; bits|= run; if (alevel < 128) { bits<<=8; len+=8; bits|= level & 0xff; } else { bits<<=16; len+=16; bits|= level & 0xff; if (level < 0) { bits|= 0x8001 + level + 255; } else { bits|= level & 0xffff; } } } uni_ac_vlc_len [UNI_AC_ENC_INDEX(run, i)]= len; } } }