# AudioObjectGetPropertyDataSize(_:_:_:_:_:) ``` func AudioObjectGetPropertyDataSize(_ inObjectID: AudioObjectID, _ inAddress: UnsafePointer, _ inQualifierDataSize: UInt32, _ inQualifierData: UnsafeRawPointer?, _ outDataSize: UnsafeMutablePointer) -> OSStatus ``` ## Parameters `inObjectID` The AudioObject to query. `inAddress` An AudioObjectPropertyAddress indicating which property is being queried. `inQualifierDataSize` A UInt32 indicating the size of the buffer pointed to by inQualifierData. Note that not all properties require qualification, in which case this value will be 0. `inQualifierData` A buffer of data to be used in determining the data of the property being queried. Note that not all properties require qualification, in which case this value will be NULL. `outDataSize` A UInt32 indicating how many bytes the data for the given property occupies. ## Return Value An OSStatus indicating success or failure. ## Discussion \abstract Queries an AudioObject to find the size of the data for the given property. --- 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)