Class JPEG2000ArithmeticDecoder

This class implements the QM Coder decoding as defined in JPEG 2000 Part I Final Committee Draft Version 1.0 Annex C.3 Arithmetic decoding procedure available at http://www.jpeg.org/public/fcd15444-1.pdf

The arithmetic decoder is used in conjunction with context models to decode JPEG2000 and JBIG2 streams.

Index

Constructors

constructor

new JPEG2000ArithmeticDecoder(
    data: Uint8Array,
    start: number,
    end: number,
): JPEG2000ArithmeticDecoder
C.3.5 Initialisation of the decoder (INITDEC)
Parameters
- data: Uint8Array
  compressed data
- start: number
  start index
- end: number
  end index
Returns JPEG2000ArithmeticDecoder

Properties

data

data: Uint8Array

compressed data

end

end: number

end index

start

start: number

start index

Methods

byteIn

byteIn(): void
C.3.4 Compressed data input (BYTEIN)

Returns void

readBit

readBit(contexts: number[] | Int8Array<ArrayBufferLike>, pos: number): number
C.3.2 Decoding a decision (DECODE)
Parameters
- contexts: number[] | Int8Array<ArrayBufferLike>
  context models
- pos: number
  context model index
Returns number
0 or 1

Class JPEG2000ArithmeticDecoder

Index

Constructors

Properties

Methods

Constructors

constructor

Parameters

Returns JPEG2000ArithmeticDecoder

Properties

data

end

start

Methods

byteIn

Returns void

readBit

Parameters

Returns number

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