const int j = zigzag_direct[i];
const int j = s->intra_scantable.permutated[i];
static inline void requantize_coeffs(MpegEncContext *s, DCTELEM block[64], int oldq, int newq, int n){    int i;        if(s->mb_intra){         //FIXME requantize, note (mpeg1/h263/h263p-aic dont need it,...)        i=1;    }else        i=0;        for(;i<=s->block_last_index[n]; i++){        const int j = zigzag_direct[i];        int level = block[j];                block[j]= ROUNDED_DIV(level*oldq, newq);    }    for(i=s->block_last_index[n]; i>=0; i--){        const int j = zigzag_direct[i]; //FIXME other scantabs        if(block[j]) break;    }    s->block_last_index[n]= i;}