---
title: AVSampleBufferRequest.Direction.reverse
framework: avfoundation
role: symbol
role_heading: Case
path: avfoundation/avsamplebufferrequest/direction-swift.enum/reverse
---

# AVSampleBufferRequest.Direction.reverse

The number of previous samples may be zero or greater.

## Declaration

```swift
case reverse
```

## Discussion

Discussion The number of previous samples allowed is subject to the limitCursor, preferredMinSampleCount, and maxSampleCount property values.

## See Also

### Buffer direction

- [AVSampleBufferRequest.Direction.forward](avfoundation/avsamplebufferrequest/direction-swift.enum/forward.md)
- [AVSampleBufferRequest.Direction.none](avfoundation/avsamplebufferrequest/direction-swift.enum/none.md)