import { _PdfDecodeStream } from '../decode-stream';
import { _PdfFaxDecoder } from '../graphics/images/pdf-fax-decoder';
import { _PdfDictionary } from '../pdf-primitives';
/**
 * Provides a CCITT Fax decoding stream that expands fax encoded data from the underlying source.
 *
 * @private
 */
export declare class _PdfFaxStream extends _PdfDecodeStream {
    stream: any;
    ccittFaxDecoder: _PdfFaxDecoder;
    constructor(str: any, maybeLength?: number, params?: _PdfDictionary);
    readBlock(): void;
}