CoreMedia · IOS API REFERENCE

CMMutableDataBlockBuffer.BlockRegion

struct · iOS 26.0+ · SDK 27.1

struct BlockRegion

A contiguous region of mutable memory within a block buffer.

Members (7)

get · iOS 26.0+

TypeScript

get startIndex(): number

Swift declaration

let startIndex: Int

The position of the first element in a nonempty collection.

method · iOS 26.0+

TypeScript

withUnsafeBytes(body: ((arg0: ArrayBuffer) => unknown)): unknown

Swift declaration

func withUnsafeBytes<ResultType>(_ body: (UnsafeRawBufferPointer) throws -> ResultType) rethrows -> ResultType

Calls the given closure with a pointer to the underlying bytes of the region’s contiguous storage.

method · iOS 26.0+

TypeScript

withUnsafeMutableBytes(body: ((arg0: ArrayBuffer) => unknown)): unknown

Swift declaration

func withUnsafeMutableBytes<ResultType>(_ body: (UnsafeMutableRawBufferPointer) throws -> ResultType) rethrows -> ResultType

Calls the given closure with a mutable pointer to the underlying bytes of the region’s contiguous storage.

get · iOS 26.0+

TypeScript

get count(): number

Swift declaration

var count: Int { get }

Number of bytes in the block region

get · iOS 26.0+

TypeScript

get regions(): SDKHandle

Swift declaration

var regions: CollectionOfOne<CMMutableDataBlockBuffer.BlockRegion> { get }

The single buffer that makes up this region.

get · iOS 26.0+

TypeScript

get endIndex(): number

Swift declaration

var endIndex: Int { get }

The position one greater than the last valid subscript argument.

subscript · iOS 26.0+

TypeScript

subscript(position: number): number

Swift declaration

subscript(position: CMMutableDataBlockBuffer.BlockRegion.Index) -> UInt8 { get set }

Accesses the data byte at the specified position.

No declarations were skipped in this snapshot.