---
title: ExtAudioFileRef
framework: audiotoolbox
role: symbol
role_heading: Type Alias
path: audiotoolbox/extaudiofileref
---

# ExtAudioFileRef

An opaque structure representing an extended audio file object.

## Declaration

```swift
typealias ExtAudioFileRef = OpaquePointer
```

## See Also

### Data Types

- [ExtAudioFilePacketTableInfoOverride](audiotoolbox/extaudiofilepackettableinfooverride.md)
- [ExtAudioFilePropertyID](audiotoolbox/extaudiofilepropertyid.md)