/**
 * AVIF image data
 */
export declare interface AvifImageData {
  data: Uint8Array
  width: number
  height: number
  hasAlpha?: boolean
  bitDepth?: 8 | 10 | 12
}
export declare interface AvifAnimationFrame extends AvifImageData {
  duration: number
  timestamp: number
}
export declare interface AvifAnimation {
  frames: AvifAnimationFrame[]
  timescale: number
  duration: number
}
/**
 * AVIF encoding options
 */
export declare interface AvifEncodeOptions {
  quality?: number
  lossless?: boolean
  effort?: number
  alpha?: boolean
  alphaQuality?: number
  chromaSubsampling?: '4:2:0' | '4:2:2' | '4:4:4'
}
/**
 * AVIF decoding options
 */
export declare interface AvifDecodeOptions {
  format?: 'rgba' | 'rgb'
  ignoreAlpha?: boolean
}
/**
 * ISOBMFF box structure
 */
export declare interface ISOBMFFBox {
  type: string
  size: number
  offset: number
  data: Uint8Array
  children?: ISOBMFFBox[]
}
/**
 * AVIF file info
 */
export declare interface AvifInfo {
  width: number
  height: number
  hasAlpha: boolean
  bitDepth: number
  colorSpace: string
  isSequence: boolean
}
/**
 * Item location entry
 */
export declare interface ItemLocation {
  itemId: number
  constructionMethod: number
  dataReferenceIndex: number
  baseOffset: number
  extents: Array<{
    extentOffset: number
    extentLength: number
  }>
}
/**
 * Item info entry
 */
export declare interface ItemInfo {
  itemId: number
  itemProtectionIndex: number
  itemType: string
  itemName: string
  contentType?: string
  contentEncoding?: string
}
/**
 * Image spatial extent
 */
export declare interface ImageSpatialExtent {
  width: number
  height: number
}
/**
 * Pixel information
 */
export declare interface PixelInformation {
  bitsPerChannel: number[]
}
/**
 * AV1 codec configuration
 */
export declare interface AV1CodecConfig {
  seqProfile: number
  seqLevelIdx0: number
  seqTier0: number
  highBitdepth: number
  twelveBit: number
  monochrome: number
  chromaSubsamplingX: number
  chromaSubsamplingY: number
  chromaSamplePosition: number
}
/**
 * AV1 OBU (Open Bitstream Unit)
 */
export declare interface AV1OBU {
  type: number
  size: number
  data: Uint8Array
}
/**
 * AV1 OBU types
 */
export declare enum OBUType {
  SEQUENCE_HEADER = 1,
  TEMPORAL_DELIMITER = 2,
  FRAME_HEADER = 3,
  TILE_GROUP = 4,
  METADATA = 5,
  FRAME = 6,
  REDUNDANT_FRAME_HEADER = 7,
  TILE_LIST = 8,
  PADDING = 15,
}