h->left_border[0]= h->top_border[s->mb_x][15];
h->left_border[0]= h->top_borders[0][s->mb_x][15];
static inline void backup_mb_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize){    MpegEncContext * const s = &h->s;    int i;        src_y  -=   linesize;    src_cb -= uvlinesize;    src_cr -= uvlinesize;    // There is two lines saved, the line above the the top macroblock of a pair,    // and the line above the bottom macroblock    h->left_border[0]= h->top_border[s->mb_x][15];    for(i=1; i<17; i++){        h->left_border[i]= src_y[15+i*  linesize];    }        *(uint64_t*)(h->top_border[s->mb_x]+0)= *(uint64_t*)(src_y +  16*linesize);    *(uint64_t*)(h->top_border[s->mb_x]+8)= *(uint64_t*)(src_y +8+16*linesize);    if(!(s->flags&CODEC_FLAG_GRAY)){        h->left_border[17  ]= h->top_border[s->mb_x][16+7];        h->left_border[17+9]= h->top_border[s->mb_x][24+7];        for(i=1; i<9; i++){            h->left_border[i+17  ]= src_cb[7+i*uvlinesize];            h->left_border[i+17+9]= src_cr[7+i*uvlinesize];        }        *(uint64_t*)(h->top_border[s->mb_x]+16)= *(uint64_t*)(src_cb+8*uvlinesize);        *(uint64_t*)(h->top_border[s->mb_x]+24)= *(uint64_t*)(src_cr+8*uvlinesize);    }}