# AudioFormatGetPropertyInfo(_:_:_:_:) Gets information about an audio format property. ``` func AudioFormatGetPropertyInfo(_ inPropertyID: AudioFormatPropertyID, _ inSpecifierSize: UInt32, _ inSpecifier: UnsafeRawPointer?, _ outPropertyDataSize: UnsafeMutablePointer) -> OSStatus ``` ## Parameters `inPropertyID` An `AudioFormatPropertyID` constant. `inSpecifierSize` The size of the specifier data. `inSpecifier` A buffer of data used as an input argument for querying some of the properties. `outPropertyDataSize` The the size in bytes of the current value of the property. To get the property value, you need a buffer of this size. ## Return Value A result code. Returns `noErr` if successful. ## Discussion --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)