Extract the loop start/end points from the `smpl` chunk of a `WAV`. If loop points don't exist, it returns the start and end of the sample as the loop points. :param wav_file: Source `WAV` to process. :return: The start/end loop points and a flag noting if the `WAV`
(wav_file: Path)
source not stored for this graph (policy: none)
no outgoing calls
no test coverage detected