---
title: Anonymous
framework: Kernel
role: containerSymbol
role_heading: Enumeration
platforms: [macOS 10.12+]
path: kernel/1646418-anonymous
---

# Anonymous

## Declaration

```occ
enum : unsigned int {
    ...
};
```

## Topics

### Constants

- [kIOAudioInputPortSubTypeCD](kernel/1646418-anonymous/kioaudioinputportsubtypecd.md)
- [kIOAudioInputPortSubTypeExternalMicrophone](kernel/1646418-anonymous/kioaudioinputportsubtypeexternalmicrophone.md)
- [kIOAudioInputPortSubTypeInternalMicrophone](kernel/1646418-anonymous/kioaudioinputportsubtypeinternalmicrophone.md)
- [kIOAudioInputPortSubTypeLine](kernel/1646418-anonymous/kioaudioinputportsubtypeline.md)
- [kIOAudioInputPortSubTypeSPDIF](kernel/1646418-anonymous/kioaudioinputportsubtypespdif.md)
- [kIOAudioOutputPortSubTypeExternalSpeaker](kernel/1646418-anonymous/kioaudiooutputportsubtypeexternalspeaker.md)
- [kIOAudioOutputPortSubTypeHeadphones](kernel/1646418-anonymous/kioaudiooutputportsubtypeheadphones.md)
- [kIOAudioOutputPortSubTypeInternalSpeaker](kernel/1646418-anonymous/kioaudiooutputportsubtypeinternalspeaker.md)
- [kIOAudioOutputPortSubTypeLine](kernel/1646418-anonymous/kioaudiooutputportsubtypeline.md)
- [kIOAudioOutputPortSubTypeSPDIF](kernel/1646418-anonymous/kioaudiooutputportsubtypespdif.md)