---
title: AudioFileComponentFileDataIsThisFormatProc
framework: audiotoolbox
role: symbol
role_heading: Type Alias
path: audiotoolbox/audiofilecomponentfiledataisthisformatproc
---

# AudioFileComponentFileDataIsThisFormatProc

## Declaration

```swift
typealias AudioFileComponentFileDataIsThisFormatProc = (UnsafeMutableRawPointer, UInt32, UnsafeRawPointer, UnsafeMutablePointer<UInt32>) -> OSStatus
```

## See Also

### Checking the File Format

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