---
title: mAudioFile
framework: audiotoolbox
role: symbol
role_heading: Instance Property
path: audiotoolbox/scheduledaudiofileregion/maudiofile
---

# mAudioFile

Must be a valid and already-open audio file object (of type AudioFileID), as declared in AudioToolbox/AudioFile.h.

## Declaration

```swift
var mAudioFile: OpaquePointer
```