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# AVAudioEngineManualRenderingMode

The two modes for manual rendering.

```
enum AVAudioEngineManualRenderingMode
```

## Overview

By default, the engine connects to an audio device and automatically renders in real time. You can configure it to operate in manual rendering mode, where it doesn’t have a connection to an audio device and renders in response to requests from the client.

## Topics

### Constants

[`AVAudioEngineManualRenderingModeOffline`](/documentation/AVFAudio/AVAudioEngineManualRenderingMode/offline)

An engine that operates in an offline mode.

[`AVAudioEngineManualRenderingModeRealtime`](/documentation/AVFAudio/AVAudioEngineManualRenderingMode/realtime)

An engine that operates under real-time constraints and doesn’t make blocking calls while rendering.

## Relationships

### Conforms To

[`Equatable`](/documentation/Swift/Equatable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Sendable`](/documentation/Swift/Sendable)

[`Hashable`](/documentation/Swift/Hashable)

[`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable)

[`RawRepresentable`](/documentation/Swift/RawRepresentable)

---

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