UINT8 *s;
static void deinterlace_line(UINT8 *dst, UINT8 *src, int src_wrap,                             int size){    UINT8 *cm = cropTbl + MAX_NEG_CROP;    int sum;    UINT8 *s;    for(;size > 0;size--) {        s = src;        sum = -s[0];        s += src_wrap;        sum += s[0] << 2;        s += src_wrap;        sum += s[0] << 1;        s += src_wrap;        sum += s[0] << 2;        s += src_wrap;        sum += -s[0];        dst[0] = cm[(sum + 4) >> 3];        dst++;        src++;    }}