export declare const FAST_ONE_PASS_COMPRESSION_QUALITY = 0;
export declare const FAST_TWO_PASS_COMPRESSION_QUALITY = 1;
export declare const ZOPFLIFICATION_QUALITY = 10;
export declare const HQ_ZOPFLIFICATION_QUALITY = 11;
export declare const MIN_QUALITY = 0;
export declare const MAX_QUALITY = 11;
export declare const DEFAULT_QUALITY = 11;
export declare const MAX_QUALITY_FOR_STATIC_ENTROPY_CODES = 2;
export declare const MIN_QUALITY_FOR_BLOCK_SPLIT = 4;
export declare const MIN_QUALITY_FOR_NONZERO_DISTANCE_PARAMS = 4;
export declare const MIN_QUALITY_FOR_OPTIMIZE_HISTOGRAMS = 4;
export declare const MIN_QUALITY_FOR_EXTENSIVE_REFERENCE_SEARCH = 5;
export declare const MIN_QUALITY_FOR_CONTEXT_MODELING = 5;
export declare const MIN_QUALITY_FOR_HQ_CONTEXT_MODELING = 7;
export declare const MIN_QUALITY_FOR_HQ_BLOCK_SPLITTING = 10;
export declare const MIN_WINDOW_BITS = 10;
export declare const MAX_WINDOW_BITS = 24;
export declare const LARGE_MAX_WINDOW_BITS = 30;
export declare const DEFAULT_WINDOW_BITS = 22;
export declare const MIN_INPUT_BLOCK_BITS = 16;
export declare const MAX_INPUT_BLOCK_BITS = 24;
export declare const MAX_NUM_DELAYED_SYMBOLS = 12287;
export declare const MAX_ZOPFLI_LEN_QUALITY_10 = 150;
export declare const MAX_ZOPFLI_LEN_QUALITY_11 = 325;
export declare const LONG_COPY_QUICK_STEP = 16384;
export declare const enum HasherType {
    NONE = 0,
    H01 = 1,
    H02 = 2,
    H03 = 3,
    H04 = 4,
    H05 = 5,// Q5-9
    H06 = 6,// Q5-9 large files
    H10 = 10,// Q10-11 binary tree
    H35 = 35,// large window
    H40 = 40,// forgetful chain
    H41 = 41,
    H42 = 42,
    H54 = 54,// Q4 large files
    H55 = 55,// large window Q4
    H58 = 58,// SIMD
    H65 = 65,// large window Q5-9
    H68 = 68
}
export declare const enum EncoderMode {
    GENERIC = 0,// no assumptions about content
    TEXT = 1,// UTF-8 text content
    FONT = 2
}
export declare const NUM_COMMAND_CODES = 704;
export declare const NUM_LITERAL_CODES = 256;
export declare const NUM_BLOCK_LEN_CODES = 26;
export declare const NUM_INSERT_AND_COPY_CODES = 704;
export declare const NUM_DISTANCE_SHORT_CODES = 16;
export declare const MAX_DIRECT_DISTANCE_CODES = 120;
export declare const MAX_DISTANCE_POSTFIX_BITS = 3;
export interface HasherParams {
    type: HasherType;
    bucketBits: number;
    blockBits: number;
    numLastDistancesToCheck: number;
}
export interface DistanceParams {
    distancePostfixBits: number;
    numDirectDistanceCodes: number;
    alphabetSizeMax: number;
    alphabetSizeLimit: number;
    maxDistance: number;
}
export interface EncoderParams {
    mode: EncoderMode;
    quality: number;
    lgwin: number;
    lgblock: number;
    streamOffset: number;
    sizeHint: number;
    disableLiteralContextModeling: boolean;
    largeWindow: boolean;
    hasher: HasherParams;
    dist: DistanceParams;
}
export declare function maxHashTableSize(quality: number): number;
export declare function maxZopfliLen(quality: number): number;
export declare function maxZopfliCandidates(quality: number): number;
export declare function sanitizeParams(params: EncoderParams): void;
export declare function computeLgBlock(params: EncoderParams): number;
export declare function computeRbBits(params: EncoderParams): number;
export declare function maxMetablockSize(params: EncoderParams): number;
export declare function literalSpreeLengthForSparseSearch(quality: number): number;
export declare function chooseHasher(params: EncoderParams): HasherParams;
export declare function createDefaultParams(): EncoderParams;
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