def trim

emerging-ezaudio@0.4.0.0 · main.bend:143

import Base

143# frames [start, start + nframes). none when that span passes the end.
144def trim(c: Clip, +start: U32, +nframes: U32) -> Maybe<&2, Clip>:
145  match c:
146    case Clip{+hz, +nch, fmt, +pcm}:
147      trim.go(U32.is_le((start + nframes : U32), count.of(nch, U32.from_nat(List.length(&2, U32, pcm)))), hz, nch,
148        fmt, pcm, start, nframes)