import type { BASIS, BASIS_FORMATS } from './Basis';
/**
 * Initialization message sent by the main thread.
 * @ignore
 */
export interface IInitializeTranscoderMessage {
    wasmSource: ArrayBuffer;
    type: 'init';
}
/**
 * Request parameters for transcoding basis files. It only supports transcoding all of the basis file at once.
 * @ignore
 */
export interface ITranscodeMessage {
    requestID?: number;
    rgbFormat: number;
    rgbaFormat?: number;
    basisData?: Uint8Array;
    type: 'transcode';
}
/** @ignore */
export interface ITranscodedImage {
    imageID: number;
    levelArray: Array<{
        levelID: number;
        levelWidth: number;
        levelHeight: number;
        levelBuffer: Uint8Array;
    }>;
    width: number;
    height: number;
}
/**
 * Response format for {@link TranscoderWorker}.
 * @ignore
 */
export interface ITranscodeResponse {
    type: 'init' | 'transcode';
    requestID?: number;
    success: boolean;
    basisFormat?: BASIS_FORMATS;
    imageArray?: Array<{
        imageID: number;
        levelArray: Array<{
            levelID: number;
            levelWidth: number;
            levelHeight: number;
            levelBuffer: Uint8Array;
        }>;
        width: number;
        height: number;
    }>;
}
declare global {
    interface Window {
        BASIS: BASIS;
    }
}
/**
 * This wraps the transcoder web-worker functionality; it can be converted into a string to get the source code. It expects
 * you to prepend the transcoder JavaScript code so that the `BASIS` namespace is available.
 *
 * The transcoder worker responds to two types of messages: "init" and "transcode". You must always send the first "init"
 * {@link IInitializeTranscoderMessage} message with the WebAssembly binary; if the transcoder is successfully initialized,
 * the web-worker will respond by sending another {@link ITranscodeResponse} message with `success: true`.
 * @ignore
 */
export declare function TranscoderWorkerWrapper(): void;