def hdr.mpeg1

emerging-ezaudio@0.4.0.0 · src/mp3.bend:26

import Base

26# 1 when the ID bit selects MPEG-1
27def hdr.mpeg1(xs: List<&2, U32>) -> U32:
28  match xs:
29    case _b0 <> +b1 <> _b2 <> _b3 <> _rest:
30      ((b1 >> 3n : U32) .&. 1 : U32)
31    case _:
32      0