---
title: mMagicCookie
framework: audiotoolbox
role: symbol
role_heading: Instance Property
path: audiotoolbox/audioformatinfo/mmagiccookie
---

# mMagicCookie

A pointer to the decompression information for the data described in the mASBD parameter.

## Declaration

```swift
var mMagicCookie: UnsafeRawPointer
```