import type { CubeMapInfo } from "./panoramaToCubemap";
/**
 * Header information of HDR texture files.
 */
export interface HDRInfo {
    /**
     * The height of the texture in pixels.
     */
    height: number;
    /**
     * The width of the texture in pixels.
     */
    width: number;
    /**
     * The index of the beginning of the data in the binary file.
     */
    dataPosition: number;
}
/**
 * This groups tools to convert HDR texture to native colors array.
 */
export declare class HDRTools {
    private static _Ldexp;
    private static _Rgbe2float;
    private static _ReadStringLine;
    /**
     * Reads header information from an RGBE texture stored in a native array.
     * More information on this format are available here:
     * https://en.wikipedia.org/wiki/RGBE_image_format
     *
     * @param uint8array The binary file stored in  native array.
     * @returns The header information.
     */
    static RGBE_ReadHeader(uint8array: Uint8Array): HDRInfo;
    /**
     * Returns the cubemap information (each faces texture data) extracted from an RGBE texture.
     * This RGBE texture needs to store the information as a panorama.
     *
     * More information on this format are available here:
     * https://en.wikipedia.org/wiki/RGBE_image_format
     *
     * @param buffer The binary file stored in an array buffer.
     * @param size The expected size of the extracted cubemap.
     * @param supersample enable supersampling the cubemap (default: false)
     * @returns The Cube Map information.
     */
    static GetCubeMapTextureData(buffer: ArrayBuffer, size: number, supersample?: boolean): CubeMapInfo;
    /**
     * Returns the pixels data extracted from an RGBE texture.
     * This pixels will be stored left to right up to down in the R G B order in one array.
     *
     * More information on this format are available here:
     * https://en.wikipedia.org/wiki/RGBE_image_format
     *
     * @param uint8array The binary file stored in an array buffer.
     * @param hdrInfo The header information of the file.
     * @returns The pixels data in RGB right to left up to down order.
     */
    static RGBE_ReadPixels(uint8array: Uint8Array, hdrInfo: HDRInfo): Float32Array;
    private static _RGBEReadPixelsRLE;
    private static _RGBEReadPixelsNOTRLE;
}