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# AVSampleBufferRequest.Direction

The modes that describe the buffer request direction.

```
enum Direction
```

## Topics

### Buffer direction

[`AVSampleBufferRequest.Direction.forward`](/documentation/AVFoundation/AVSampleBufferRequest/Direction-swift.enum/forward)

The number of following samples may be zero or greater.

[`AVSampleBufferRequest.Direction.none`](/documentation/AVFoundation/AVSampleBufferRequest/Direction-swift.enum/none)

A single sample will be loaded.

[`AVSampleBufferRequest.Direction.reverse`](/documentation/AVFoundation/AVSampleBufferRequest/Direction-swift.enum/reverse)

The number of previous samples may be zero or greater.


---

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