import GLTFShader from "../Parser/Schema/GLTFShader";
import GLTFImage from "../Parser/Schema/GLTFImage";
import GLTF from "../Parser/Schema/GLTF";
/**
 * Provides resolving resource dependency while parsing gltf file.
 */
export default class ResourceResolver {
    private _rootPath;
    baseDirectory: string;
    binaryGLTFBuffer: ArrayBuffer;
    tf: GLTF;
    constructor(_rootPath: string);
    loadGLTFFile(): Promise<GLTF>;
    /**
     * Load image from specified url or dataURL.
     * @param  {string}  url [description]
     * @return {Promise}     [description]
     */
    loadImage(image: GLTFImage): Promise<HTMLImageElement | HTMLCanvasElement>;
    /**
     * Load buffer from specified url or dataURL.
     * @return {Promise<ArrayBuffer>} [description]
     */
    loadBuffer(url: string): Promise<ArrayBuffer>;
    /**
     * Load string from specified url or dataURL
     * @param  {string}          url [description]
     * @return {Promise<string>}     [description]
     */
    loadShader(shader: GLTFShader): Promise<string>;
    /**
     * Convert data url string into array buffer
     * @param  {string}      dataUri [description]
     * @return {ArrayBuffer}         [description]
     */
    private _dataUriToArrayBuffer(dataUri);
    /**
     * Convert data uri into image element
     * @param  {string}  dataUrl [description]
     * @return {Promise}         [description]
     */
    private _dataUriToImage(dataUrl);
    private _dataUriToText(dataUrl);
    private _ensureCorrectSize(image);
    private _bufferToString(arr);
    private _smallBufferToString(arr);
    /**
     * Check specified url is dataUrl or not
     * @param  {string}  dataUrl [description]
     * @return {boolean}         [description]
     */
    private _isDataUrl(dataUrl);
    /**
     * Get directiory location from specified url
     * @param  {string} url [description]
     * @return {string}     [description]
     */
    private _getBaseDir(url);
}