export type MotionChangeDefinition = {
  channelThreshold: number
  minimumChangePercent: number
}

type MotionChangePixels = ArrayLike<number>

export type MotionChangeInput = {
  baseline?: MotionChangePixels
  candidate?: MotionChangePixels
  changePixels?: number
  definition: MotionChangeDefinition
  height?: number
  installGlobal?: boolean
  label?: string
  totalPixels?: number
  width?: number
}

export type MotionChangeMeasurement = {
  changePercent: number
  changePixels: number
  passedMinimum: boolean
  totalPixels: number
}

export const MOTION_CHANGE_DEFINITION: Readonly<MotionChangeDefinition>

export function measureMotionChange(
  input: MotionChangeInput,
): MotionChangeMeasurement | null

export function measureProofMotionChange(
  input: Omit<MotionChangeInput, 'definition' | 'installGlobal'>,
): MotionChangeMeasurement