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# AudioFileStreamPropertyFlags

```
struct AudioFileStreamPropertyFlags
```

## Topics

### Constants

[`kAudioFileStreamPropertyFlag_CacheProperty`](/documentation/AudioToolbox/AudioFileStreamPropertyFlags/cacheProperty)

A property listener sets this flag to instruct the parser to cache the property value so that it remains available after the callback returns.

[`kAudioFileStreamPropertyFlag_PropertyIsCached`](/documentation/AudioToolbox/AudioFileStreamPropertyFlags/propertyIsCached)

This flag is set when the callback [`AudioFileStream_PropertyListenerProc`](/documentation/AudioToolbox/AudioFileStream_PropertyListenerProc) is invoked in the case that the value of the property has been cached and can be obtained later.

## Relationships

### Conforms To

[`SetAlgebra`](/documentation/Swift/SetAlgebra)

[`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`OptionSet`](/documentation/Swift/OptionSet)

[`ExpressibleByArrayLiteral`](/documentation/Swift/ExpressibleByArrayLiteral)

[`Sendable`](/documentation/Swift/Sendable)

[`RawRepresentable`](/documentation/Swift/RawRepresentable)

[`Equatable`](/documentation/Swift/Equatable)

---

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