---
title: CMBlockBuffer.Flags
framework: coremedia
role: symbol
role_heading: Structure
path: coremedia/cmblockbuffer/flags
---

# CMBlockBuffer.Flags

A structure that defines feature and control flags.

## Declaration

```swift
struct Flags
```

## Topics

### Type Properties

- [alwaysCopyData](coremedia/cmblockbuffer/flags/alwayscopydata.md)
- [assureMemoryNow](coremedia/cmblockbuffer/flags/assurememorynow.md)
- [dontOptimizeDepth](coremedia/cmblockbuffer/flags/dontoptimizedepth.md)
- [permitEmptyReference](coremedia/cmblockbuffer/flags/permitemptyreference.md)

## Relationships

### Conforms To

- [Equatable](swift/equatable.md)
- [ExpressibleByArrayLiteral](swift/expressiblebyarrayliteral.md)
- [OptionSet](swift/optionset.md)
- [RawRepresentable](swift/rawrepresentable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)
- [SetAlgebra](swift/setalgebra.md)

## See Also

### Data Types

- [CMBlockBuffer.Error](coremedia/cmblockbuffer/error.md)
- [CMBlockBuffer.Slice](coremedia/cmblockbuffer/slice.md)