---
title: "AudioSessionGetPropertySize(_:_:)"
framework: audiotoolbox
role: symbol
role_heading: Function
path: "audiotoolbox/audiosessiongetpropertysize(_:_:)"
---

# AudioSessionGetPropertySize(_:_:)

Gets the size of the value for a specified audio session property.

## Declaration

```swift
func AudioSessionGetPropertySize(_ inID: AudioSessionPropertyID, _ outDataSize: UnsafeMutablePointer<UInt32>!) -> OSStatus
```

## Parameters

- `inID`: The identifier for the audio session property whose value you want to get the size of.
- `outDataSize`: On output, the size of the property value.

## Return Value

Return Value A result code. See Result Codes.

## Discussion

Discussion Audio session properties are listed and described in Audio Session Property Identifiers.

## See Also

### Related Documentation

- [AudioSessionGetProperty(_:_:_:)](audiotoolbox/audiosessiongetproperty(_:_:_:).md)
- [AudioSessionSetProperty(_:_:_:)](audiotoolbox/audiosessionsetproperty(_:_:_:).md)

### Functions

- [AudioFileReadPackets(_:_:_:_:_:_:_:)](audiotoolbox/audiofilereadpackets(_:_:_:_:_:_:_:).md)
- [AudioComponentGetIcon(_:_:)](audiotoolbox/audiocomponentgeticon(_:).md)
- [AudioComponentGetLastActiveTime(_:)](audiotoolbox/audiocomponentgetlastactivetime(_:).md)
- [AudioHardwareServiceAddPropertyListener(_:_:_:_:)](audiotoolbox/audiohardwareserviceaddpropertylistener(_:_:_:_:).md)
- [AudioHardwareServiceGetPropertyData(_:_:_:_:_:_:)](audiotoolbox/audiohardwareservicegetpropertydata(_:_:_:_:_:_:).md)
- [AudioHardwareServiceGetPropertyDataSize(_:_:_:_:_:)](audiotoolbox/audiohardwareservicegetpropertydatasize(_:_:_:_:_:).md)
- [AudioHardwareServiceHasProperty(_:_:)](audiotoolbox/audiohardwareservicehasproperty(_:_:).md)
- [AudioHardwareServiceIsPropertySettable(_:_:_:)](audiotoolbox/audiohardwareserviceispropertysettable(_:_:_:).md)
- [AudioHardwareServiceRemovePropertyListener(_:_:_:_:)](audiotoolbox/audiohardwareserviceremovepropertylistener(_:_:_:_:).md)
- [AudioHardwareServiceSetPropertyData(_:_:_:_:_:_:)](audiotoolbox/audiohardwareservicesetpropertydata(_:_:_:_:_:_:).md)
- [AudioOutputUnitGetHostIcon(_:_:)](audiotoolbox/audiooutputunitgethosticon(_:_:).md)
- [AudioOutputUnitPublish(_:_:_:_:)](audiotoolbox/audiooutputunitpublish(_:_:_:_:).md)
- [AudioSessionAddPropertyListener(_:_:_:)](audiotoolbox/audiosessionaddpropertylistener(_:_:_:).md)
- [AudioSessionGetProperty(_:_:_:)](audiotoolbox/audiosessiongetproperty(_:_:_:).md)
- [AudioSessionInitialize(_:_:_:_:)](audiotoolbox/audiosessioninitialize(_:_:_:_:).md)