fn enable_audiounit_scope()

in src/backend/mod.rs [1324:1353]

• 29 lines of code
• 2 McCabe index (conditional complexity)

fn enable_audiounit_scope(
    unit: AudioUnit,
    devtype: DeviceType,
    enable_io: bool,
) -> std::result::Result<(), OSStatus> {
    assert!(!unit.is_null());

    let enable = u32::from(enable_io);
    let (scope, element) = match devtype {
        DeviceType::INPUT => (kAudioUnitScope_Input, AU_IN_BUS),
        DeviceType::OUTPUT => (kAudioUnitScope_Output, AU_OUT_BUS),
        _ => panic!(
            "Enable AudioUnit {:?} with unsupported type: {:?}",
            unit, devtype
        ),
    };
    let status = audio_unit_set_property(
        unit,
        kAudioOutputUnitProperty_EnableIO,
        scope,
        element,
        &enable,
        mem::size_of::<u32>(),
    );
    if status == NO_ERR {
        Ok(())
    } else {
        Err(status)
    }
}