fn create_typed_audiounit()

in src/backend/mod.rs [1377:1400]

• 23 lines of code
• 3 McCabe index (conditional complexity)

fn create_typed_audiounit(sub_type: c_uint) -> Result<AudioUnit> {
    let desc = AudioComponentDescription {
        componentType: kAudioUnitType_Output,
        componentSubType: sub_type,
        componentManufacturer: kAudioUnitManufacturer_Apple,
        componentFlags: 0,
        componentFlagsMask: 0,
    };

    let comp = unsafe { AudioComponentFindNext(ptr::null_mut(), &desc) };
    if comp.is_null() {
        cubeb_log!("Could not find matching audio hardware.");
        return Err(Error::error());
    }
    let mut unit: AudioUnit = ptr::null_mut();
    let status = unsafe { AudioComponentInstanceNew(comp, &mut unit) };
    if status == NO_ERR {
        assert!(!unit.is_null());
        Ok(unit)
    } else {
        cubeb_log!("Fail to get a new AudioUnit. Error: {}", status);
        Err(Error::error())
    }
}