import { type Nullable } from "../../../types.js";
import { type InternalTexture } from "../internalTexture.js";
import { type IInternalTextureLoader } from "./internalTextureLoader.js";
/**
 * Inspired by https://github.com/sciecode/three.js/blob/dev/examples/jsm/loaders/EXRLoader.js
 * Referred to the original Industrial Light & Magic OpenEXR implementation and the TinyEXR / Syoyo Fujita
 * implementation.
 */
/**
 * Loader for .exr file format
 * @see [PIZ compression](https://playground.babylonjs.com/#4RN0VF#151)
 * @see [ZIP compression](https://playground.babylonjs.com/#4RN0VF#146)
 * @see [RLE compression](https://playground.babylonjs.com/#4RN0VF#149)
 * @see [PXR24 compression](https://playground.babylonjs.com/#4RN0VF#150)
 * @internal
 */
export declare class _ExrTextureLoader implements IInternalTextureLoader {
    /**
     * Defines whether the loader supports cascade loading the different faces.
     */
    readonly supportCascades = false;
    /**
     * Uploads the cube texture data to the WebGL texture. It has already been bound.
     * @param _data contains the texture data
     * @param _texture defines the BabylonJS internal texture
     * @param _createPolynomials will be true if polynomials have been requested
     * @param _onLoad defines the callback to trigger once the texture is ready
     * @param _onError defines the callback to trigger in case of error
     * Cube texture are not supported by .exr files
     */
    loadCubeData(_data: ArrayBufferView | ArrayBufferView[], _texture: InternalTexture, _createPolynomials: boolean, _onLoad: Nullable<(data?: any) => void>, _onError: Nullable<(message?: string, exception?: any) => void>): void;
    /**
     * Uploads the 2D texture data to the WebGL texture. It has already been bound once in the callback.
     * @param data contains the texture data
     * @param texture defines the BabylonJS internal texture
     * @param callback defines the method to call once ready to upload
     */
    loadData(data: ArrayBufferView, texture: InternalTexture, callback: (width: number, height: number, loadMipmap: boolean, isCompressed: boolean, done: () => void, failedLoading?: boolean) => void): void;
}
/**
 * Read the EXR data from an ArrayBufferView asynchronously.
 * @param data ArrayBufferView containing the EXR data
 * @returns An object containing the width, height, and data of the EXR texture.
 */
export declare function ReadExrDataAsync(data: ArrayBuffer): Promise<{
    width: number;
    height: number;
    data: Nullable<Float32Array>;
}>;