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# AUHostTransportStateFlags

```
struct AUHostTransportStateFlags
```

## Topics

### Constants

[`changed`](/documentation/AudioToolbox/AUHostTransportStateFlags/changed)

Indicates such state changes as start, stop, or seeking to another position in the timeline. Can be active if there was a change to the state of, or discontinuities in, the audio transport since the [`AUHostTransportStateBlock`](/documentation/AudioToolbox/AUHostTransportStateBlock) callback was last called.

[`cycling`](/documentation/AudioToolbox/AUHostTransportStateFlags/cycling)

Indicates that the host is cycling or looping.

[`moving`](/documentation/AudioToolbox/AUHostTransportStateFlags/moving)

Indicates that the audio transport is moving.

[`recording`](/documentation/AudioToolbox/AUHostTransportStateFlags/recording)

Indicates that the host is recording, or is prepared to record. Can be active with or without a moving state.


---

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