# AudioServicesGetPropertyInfo(_:_:_:_:_:) Gets information about a System Sound Services property. ``` func AudioServicesGetPropertyInfo(_ inPropertyID: AudioServicesPropertyID, _ inSpecifierSize: UInt32, _ inSpecifier: UnsafeRawPointer?, _ outPropertyDataSize: UnsafeMutablePointer?, _ outWritable: UnsafeMutablePointer?) -> OSStatus ``` ## Parameters `inPropertyID` The property you want information about. `inSpecifierSize` The size of the buffer pointed to by the `inSpecifier` parameter. Pass `0` if no specifier buffer is required. `inSpecifier` A pointer to a specifier buffer, if such a buffer is required by the property about which you want information. Pass `NULL` if no specifier is required. `outPropertyDataSize` On output, the size, in bytes, of the property value. To get the property value, you need a buffer of at least this size. `outWritable` On output, `true` if the property is writable, or `false` if the property is read only. ## Return Value A result code. ## Discussion System Sound Services properties are listed and described in [System Sound Services Property Identifiers](/documentation/AudioToolbox/1405268-system-sound-services-property-i). --- 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)