/**
 * WebP image data
 */
export declare interface WebpImageData {
  data: Uint8Array
  width: number
  height: number
  hasAlpha?: boolean
}
/**
 * WebP encoding options
 */
export declare interface WebpEncodeOptions {
  quality?: number
  lossless?: boolean
  effort?: number
  alpha?: boolean
  backend?: 'auto' | 'cli' | 'pure-ts'
  cwebpPath?: string
}
/**
 * WebP decoding options
 */
export declare interface WebpDecodeOptions {
  format?: 'rgba' | 'rgb'
}
/**
 * RIFF chunk structure
 */
export declare interface RiffChunk {
  fourCC: string
  size: number
  data: Uint8Array
  offset: number
}
/**
 * WebP file info
 */
export declare interface WebpInfo {
  width: number
  height: number
  hasAlpha: boolean
  isLossless: boolean
  hasAnimation: boolean
  isExtended: boolean
}
/**
 * VP8 frame header
 */
export declare interface VP8FrameHeader {
  keyframe: boolean
  version: number
  showFrame: boolean
  firstPartSize: number
  width: number
  height: number
  xScale: number
  yScale: number
}
/**
 * VP8L image header
 */
export declare interface VP8LHeader {
  width: number
  height: number
  hasAlpha: boolean
  version: number
}
/**
 * One frame of an animated WebP, with positioning and timing metadata
 * pulled from the surrounding ANMF chunk header.
 */
export declare interface WebpAnimationFrame {
  image: WebpImageData
  x: number
  y: number
  duration: number
  blend: 'overlay' | 'replace'
  dispose: 'none' | 'background'
}
/**
 * Decoded animation, with the canvas geometry, loop count, and an
 * ordered list of frames.
 */
export declare interface WebpAnimation {
  width: number
  height: number
  loopCount: number
  backgroundColor: number
  frames: WebpAnimationFrame[]
}