- for(i=0; i<p->buf_size*8; i++){
- if ((code & 0x01ff0000) || !(code & 0xff00)) {
- code = (code<<8) + get_bits(&gb, 8);
- i += 7;
- } else
- code = (code<<1) + get_bits1(&gb);
- if ((code & 0xffff0000) == 0x10000) {
- int gn= (code>>12)&0xf;
- if(!gn)
- src_fmt= code&8;
- if(gn != next_gn) invalid_psc++;
- else valid_psc++;
-
- if(src_fmt){ // CIF
- next_gn= (gn+1 )%13;
- }else{ //QCIF
- next_gn= (gn+1+!!gn)% 7;
+ if(src_fmt){ // CIF
+ static const int lut[16]={1,2,3,4,5,6,7,8,9,10,11,12,0,1,2,3};
+ next_gn = lut[gn];
+ }else{ //QCIF
+ static const int lut[16]={1,3,4,5,6,0,1,2,3,4,5,6,0,1,2,3,4};
+ next_gn = lut[gn];
+ }