def hdr.sr

emerging-ezaudio@0.4.0.0 · src/mp3.bend:42

import Base

42# sampling-frequency index. 3 is reserved.
43def hdr.sr(xs: List<&2, U32>) -> U32:
44  match xs:
45    case _b0 <> _b1 <> +b2 <> _b3 <> _rest:
46      ((b2 >> 2n : U32) .&. 3 : U32)
47    case _:
48      3