filter->shift, filter->round);
// fixed order prediction
-#define PRED(x, k) (int32_t)((((uint64_t)x << k) - x) >> k)
+#define PRED(x, k) (int32_t)((((uint64_t)(x) << (k)) - (x)) >> (k))
switch (s->bps) {
case 1: *p += PRED(*predictor, 4); break;
case 2: