import { BitReader } from './bits';
import type { SequenceHeader } from './sequence';
/** get_qindex for a segment at frame level (no delta-q lookup). */
export declare function getQIndex(seg: SegmentationParams, baseQIdx: number, segmentId: number): number;
/**
 * Parse the uncompressed header from `r`. The reader is left positioned just
 * after the header bits (call `byteAlign()` before reading tile group data
 * when parsing a FRAME OBU).
 */
export declare function parseFrameHeader(r: BitReader, seq: SequenceHeader, state?: FrameHeaderState): FrameHeader;
export declare const FrameType: {
  KEY: 0;
  INTER: 1;
  INTRA_ONLY: 2;
  SWITCH: 3
};
export declare const SEG_LVL_ALT_Q: 0;
export declare const SEG_LVL_MAX: 8;
export declare const TxModes: {
  ONLY_4X4: 0;
  LARGEST: 1;
  SELECT: 2
};
export declare const RestorationType: {
  NONE: 0;
  WIENER: 1;
  SGRPROJ: 2;
  SWITCHABLE: 3
};
export declare interface TileInfo {
  tileColsLog2: number
  tileRowsLog2: number
  tileCols: number
  tileRows: number
  miColStarts: number[]
  miRowStarts: number[]
  contextUpdateTileId: number
  tileSizeBytes: number
}
export declare interface QuantizationParams {
  baseQIdx: number
  deltaQYDc: number
  deltaQUDc: number
  deltaQUAc: number
  deltaQVDc: number
  deltaQVAc: number
  usingQMatrix: boolean
  qmY: number
  qmU: number
  qmV: number
}
export declare interface SegmentationParams {
  enabled: boolean
  updateMap: boolean
  temporalUpdate: boolean
  updateData: boolean
  featureEnabled: boolean[][]
  featureData: number[][]
  segIdPreSkip: boolean
  lastActiveSegId: number
}
export declare interface LoopFilterParams {
  levels: [number, number, number, number]
  sharpness: number
  deltaEnabled: boolean
  refDeltas: number[]
  modeDeltas: number[]
}
export declare interface CdefParams {
  damping: number
  bits: number
  yPriStrength: number[]
  ySecStrength: number[]
  uvPriStrength: number[]
  uvSecStrength: number[]
}
export declare interface LrParams {
  frameRestorationType: number[]
  usesLr: boolean
  usesChromaLr: boolean
  loopRestorationSize: number[]
}
export declare interface FilmGrainParams {
  seed: number
  yPoints: [number, number][]
  chromaScalingFromLuma: boolean
  uvPoints: [[number, number][], [number, number][]]
  scalingShift: number
  arCoeffLag: number
  arCoeffsY: number[]
  arCoeffsUv: [number[], number[]]
  arCoeffShift: number
  grainScaleShift: number
  uvMult: [number, number]
  uvLumaMult: [number, number]
  uvOffset: [number, number]
  overlap: boolean
  clipToRestrictedRange: boolean
}
export declare interface GlobalMotionParams {
  type: number
  matrix: [number, number, number, number, number, number]
}
export declare interface FrameHeader {
  showExistingFrame: boolean
  existingFrameIdx: number
  frameType: number
  showFrame: boolean
  showableFrame: boolean
  errorResilientMode: boolean
  disableCdfUpdate: boolean
  allowScreenContentTools: boolean
  forceIntegerMv: boolean
  frameSizeOverride: boolean
  orderHint: number
  primaryRefFrame: number
  refreshFrameFlags: number
  frameWidth: number
  frameHeight: number
  upscaledWidth: number
  superresDenom: number
  renderWidth: number
  renderHeight: number
  miCols: number
  miRows: number
  allowIntrabc: boolean
  disableFrameEndUpdateCdf: boolean
  tileInfo: TileInfo
  quantization: QuantizationParams
  segmentation: SegmentationParams
  deltaQPresent: boolean
  deltaQRes: number
  deltaLfPresent: boolean
  deltaLfRes: number
  deltaLfMulti: boolean
  codedLossless: boolean
  allLossless: boolean
  losslessArray: boolean[]
  segQIndex: number[]
  loopFilter: LoopFilterParams
  cdef: CdefParams
  lr: LrParams
  txMode: number
  reducedTxSet: boolean
  filmGrain: FilmGrainParams | null
  refFrameIdx: number[]
  allowHighPrecisionMv: boolean
  interpolationFilter: number
  isMotionModeSwitchable: boolean
  useRefFrameMvs: boolean
  referenceSelect: boolean
  skipModePresent: boolean
  skipModeRefs: [number, number]
  allowWarpedMotion: boolean
  globalMotion: GlobalMotionParams[]
}
export declare interface FrameHeaderState {
  refs: Array<FrameHeader | null>
}