---
title: CMSampleBufferMakeDataReadyHandler
framework: coremedia
role: symbol
role_heading: Type Alias
path: coremedia/cmsamplebuffermakedatareadyhandler
---

# CMSampleBufferMakeDataReadyHandler

A block the system calls to make the sample buffer ready for use.

## Declaration

```swift
typealias CMSampleBufferMakeDataReadyHandler = (CMSampleBuffer) -> OSStatus
```

## Parameters

- `sbuf`: The sample buffer to make ready.