---
title: "ExtAudioFileWrapAudioFileID(_:_:_:)"
framework: audiotoolbox
role: symbol
role_heading: Function
path: "audiotoolbox/extaudiofilewrapaudiofileid(_:_:_:)"
---

# ExtAudioFileWrapAudioFileID(_:_:_:)

Wraps an audio file object in an extended audio file object.

## Declaration

```swift
func ExtAudioFileWrapAudioFileID(_ inFileID: AudioFileID, _ inForWriting: Bool, _ outExtAudioFile: UnsafeMutablePointer<ExtAudioFileRef?>) -> OSStatus
```

## Parameters

- `inFileID`: The audio file object to wrap.
- `inForWriting`: Use true if you intend to write to the audio file, false otherwise.
- `outExtAudioFile`: On output, a newly allocated extended audio file object.

## Return Value

Return Value A result code.

## Discussion

Discussion Allocates a new extended audio file object that wraps an existing audio file object. Your application is responsible for keeping the audio file object open until the extended audio file object is disposed.

## See Also

### Managing Extended Audio File Objects

- [ExtAudioFileCreateWithURL(_:_:_:_:_:_:)](audiotoolbox/extaudiofilecreatewithurl(_:_:_:_:_:_:).md)
- [ExtAudioFileDispose(_:)](audiotoolbox/extaudiofiledispose(_:).md)
- [ExtAudioFileOpenURL(_:_:)](audiotoolbox/extaudiofileopenurl(_:_:).md)