import { GrayImageData } from "./mono-image-data.js";
import { ImageHash } from "./image-hash.js";
export type ImageDataLike = {
    data: Uint8ClampedArray;
    width: number;
    height: number;
    colorSpace: "srgb" | "display-p3";
};
export type ImageDataLikeEx = {
    data: Uint8ClampedArray | Uint8Array;
    width: number;
    height: number;
    channels?: 4 | 1 | 2 | 3;
};
export type GrayScalerGetter = (dw: DataView) => (i: number) => number;
export type Round = "round" | "trunc" | "ceil" | "floor";
export type ScaleOpts = {
    median?: boolean;
    ignore?: boolean;
    round?: Round;
} & ({
    width?: number;
    height?: number;
    size?: void;
} | {
    width?: void;
    height?: void;
    size?: number;
});
export type GrayScalingType = "bt601" | "average" | "bt709";
export type GrayScalingOpt = GrayScalingType | GrayScalerGetter;
export type HashOpts = ScaleOpts & {
    grayData?: GrayImageData;
    grayDataScaled?: GrayImageData;
    grayScaler?: GrayScalingOpt;
    classic?: boolean;
};
export type Hasher = (imageData: ImageDataLike, opts?: HashOpts) => ImageHash;