/**
 * Copyright (c) 2018 mol* contributors, licensed under MIT, See LICENSE file for more info.
 *
 * Taken/adapted from DensityServer (https://github.com/dsehnal/DensityServer)
 *
 * @author David Sehnal <david.sehnal@gmail.com>
 */
import { FileHandle } from '../../../mol-io/common/file-handle.js';
import { TypedArrayValueType } from '../../../mol-io/common/typed-array.js';
export interface Spacegroup {
    number: number;
    size: number[];
    angles: number[];
    /** Determine if the data should be treated as periodic or not. (e.g. X-ray = periodic, EM = not periodic) */
    isPeriodic: boolean;
}
export interface ValuesInfo {
    mean: number;
    sigma: number;
    min: number;
    max: number;
}
export interface Sampling {
    byteOffset: number;
    /** How many values along each axis were collapsed into 1 */
    rate: number;
    valuesInfo: ValuesInfo[];
    /** Number of samples along each axis, in axisOrder */
    sampleCount: number[];
}
export interface Header {
    /** Format version number  */
    formatVersion: string;
    /** Axis order from the slowest to fastest moving, same as in CCP4 */
    axisOrder: number[];
    /** Origin in fractional coordinates, in axisOrder */
    origin: number[];
    /** Dimensions in fractional coordinates, in axisOrder */
    dimensions: number[];
    spacegroup: Spacegroup;
    channels: string[];
    /** Determines the data type of the values */
    valueType: TypedArrayValueType;
    /** The value are stored in blockSize^3 cubes */
    blockSize: number;
    sampling: Sampling[];
}
export declare function encodeHeader(header: Header): Buffer<ArrayBufferLike>;
export declare function readHeader(file: FileHandle): Promise<{
    header: Header;
    dataOffset: number;
}>;