obartra/ssim

export type Options = {
  rgb2grayVersion: 'original' | 'integer'
  k1: number
  k2: number
  ssim: 'fast' | 'original' | 'bezkrovny' | 'weber'
  windowSize: number
  bitDepth: number
  downsample: 'original' | 'fast' | false
  maxSize?: number
}

export type Matrix = {
  width: number
  height: number
  data: number[]
}

export type ImageData = {
  readonly data: Uint8ClampedArray
  readonly height: number
  readonly width: number
}

export type ImageMatrix =
  | Matrix
  | ImageData
  | {
      width: number
      height: number
      data: Uint8Array | Int8Array | Uint32Array | Int32Array | Uint16Array
    }
export type MSSIMMatrix = Matrix & {
  mssim: number
}

export type Shape = 'full' | 'same' | 'valid'

export type Images = [ImageData, ImageData, Options]
export type Matrices = [Matrix, Matrix, Options]