---
title: GetPropertyFDF
framework: audiotoolbox
role: symbol
role_heading: Type Alias
path: audiotoolbox/getpropertyfdf
---

# GetPropertyFDF

## Declaration

```swift
typealias GetPropertyFDF = (UnsafeMutableRawPointer, AudioFilePropertyID, UnsafeMutablePointer<UInt32>, UnsafeMutableRawPointer) -> OSStatus
```

## See Also

### Checking the File Format

- [AudioFileComponentFileDataIsThisFormat(_:_:_:_:)](audiotoolbox/audiofilecomponentfiledataisthisformat(_:_:_:_:).md)
- [AudioFileComponentExtensionIsThisFormat(_:_:_:)](audiotoolbox/audiofilecomponentextensionisthisformat(_:_:_:).md)
- [AudioFileComponentExtensionIsThisFormatProc](audiotoolbox/audiofilecomponentextensionisthisformatproc.md)
- [AudioFileComponentFileDataIsThisFormatProc](audiotoolbox/audiofilecomponentfiledataisthisformatproc.md)
- [GetPropertyInfoFDF](audiotoolbox/getpropertyinfofdf.md)