---
title: CMBlockBufferGetTypeID()
framework: coremedia
role: symbol
role_heading: Function
path: coremedia/cmblockbuffergettypeid()
---

# CMBlockBufferGetTypeID()

Returns the type identifier for block buffer objects.

## Declaration

```swift
func CMBlockBufferGetTypeID() -> CFTypeID
```

## Return Value

Return Value Returns the CFTypeID corresponding to CMBlockBuffer.

## Discussion

Discussion Obtains the CoreFoundation type ID for the CMBlockBuffer type.