Class ApplicationExtension`Abstract`

Hierarchy (View Summary)

ApplicationExtension
- Netscape2

Implements

Block

Index

Constructors

Properties

applicationIdentifier

Methods

getAuthenticationCode getData emit isInvalidIn

Constructors

constructor

new ApplicationExtension(applicationIdentifier: string): ApplicationExtension
Parameters
- applicationIdentifier: string
Returns ApplicationExtension
- Defined in src/gif/blocks/ApplicationExtension.ts:11

Properties

`Readonly`applicationIdentifier

applicationIdentifier: string

The first 8 characters of this will be written to the output as ASCII. If the string is not long enough, it will be padded with "zero" bytes.

Methods

`Protected` `Abstract`getAuthenticationCode

getAuthenticationCode(): [number, number, number]
Gets three bytes that "authenticates" the application identifier. This is supposed to be used to distinguish between identical application identifiers.

Returns [number, number, number]
- Defined in src/gif/blocks/ApplicationExtension.ts:17

`Protected` `Abstract`getData

getData(): Iterable<number>
The bytes that should be written into the extension's data sub-blocks.

Returns Iterable<number>
- Defined in src/gif/blocks/ApplicationExtension.ts:19

emit

emit(vec: ByteVector): void
Parameters
- vec: ByteVector
Returns void
Implementation of Block.emit
- Defined in src/gif/blocks/ApplicationExtension.ts:23

isInvalidIn

isInvalidIn(_gif: Gif): Error | null
Notice that this method returns any potential errors, rather than throwing them.
Parameters
- _gif: Gif
Returns Error | null
Implementation of Block.isInvalidIn
- Defined in src/gif/blocks/ApplicationExtension.ts:44