def png.channels
import gralha-png-decode@0.1.0.1/png.bend as Pngimport Base
import gralha-text-scan@0.1.0.1/scan.bend as U
47def png.channels(+kind: U32) -> U32:
48 U.choose(U32, U32.is_eq(kind, 2), 3, U.choose(U32, U32.is_eq(kind, 4), 2, U.choose(U32, U32.is_eq(kind, 6), 4, 1)))