---
title: "AudioFileComponentExtensionIsThisFormat(_:_:_:)"
framework: audiotoolbox
role: symbol
role_heading: Function
path: "audiotoolbox/audiofilecomponentextensionisthisformat(_:_:_:)"
---

# AudioFileComponentExtensionIsThisFormat(_:_:_:)

## Declaration

```swift
func AudioFileComponentExtensionIsThisFormat(_ inComponent: AudioFileComponent, _ inExtension: CFString, _ outResult: UnsafeMutablePointer<UInt32>) -> OSStatus
```

## See Also

### Checking the File Format

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