---
title: kAudioOutputUnitProperty_HostTransportState
framework: audiotoolbox
role: symbol
role_heading: Global Variable
path: audiotoolbox/kaudiooutputunitproperty_hosttransportstate
---

# kAudioOutputUnitProperty_HostTransportState

## Declaration

```swift
var kAudioOutputUnitProperty_HostTransportState: AudioUnitPropertyID { get }
```

## See Also

### Constants

- [kAudioOutputUnitProperty_MIDICallbacks](audiotoolbox/kaudiooutputunitproperty_midicallbacks.md)
- [kAudioOutputUnitProperty_HostReceivesRemoteControlEvents](audiotoolbox/kaudiooutputunitproperty_hostreceivesremotecontrolevents.md)
- [kAudioOutputUnitProperty_RemoteControlToHost](audiotoolbox/kaudiooutputunitproperty_remotecontroltohost.md)
- [kAudioOutputUnitProperty_NodeComponentDescription](audiotoolbox/kaudiooutputunitproperty_nodecomponentdescription.md)