area1              91 libavcodec/intrax8dsp.c             dst[area1+i]=c;
area1             123 libavcodec/intrax8dsp.c             memset(dst+area1,avg,8+8+1);//areas 1,2 and 3 are averaged
area1             287 libavcodec/intrax8dsp.c             dst[x]=( src[area1+7-y] + src[area2+7-y] + 1 )>>1;