Function mxr_select_audio_source 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn mxr_select_audio_source(
    remote: *const mxr_remote_t,
    sink: mxr_bay_uid_t,
    source_port: u16,
) -> mxr_result_t

Routes a V2IP sink’s audio to the stream a source port advertises, leaving its video where it is.

Safety

remote is null or a live handle from mxr_remote_new().