MAX_OUTER_CROP_VALUE
static unsigned char pwc_crop_table[256 + 2*MAX_OUTER_CROP_VALUE];
#define CLAMP(x) (pwc_crop_table[MAX_OUTER_CROP_VALUE+(x)])
for (i=0;i<MAX_OUTER_CROP_VALUE;i++)
pwc_crop_table[MAX_OUTER_CROP_VALUE+i] = i;
for (i=0; i<MAX_OUTER_CROP_VALUE; i++)
pwc_crop_table[MAX_OUTER_CROP_VALUE+256+i] = 255;
const unsigned char *cm = pwc_crop_table+MAX_OUTER_CROP_VALUE;
const unsigned char *cm = pwc_crop_table+MAX_OUTER_CROP_VALUE;