import VbrHeader from "./vbrHeader";
import { File } from "../file";
import { ChannelMode, MpegVersion } from "./mpegEnums";
/**
 * Information about a Xing variable bitrate MPEG audio stream. This provides a much more accurate
 * determination of bitrate and duration than just using the first MPEG frame header alone.
 *
 * @remarks There is a tiny, known bug in this implementation. According to Hydrogenaudio, for LAME
 *     v3.99.1, they tried to change the version string to start with L instead of LAME. This was
 *     rolled back in v3.99.2 due to backwards compat issues with decoders. However, to simplify
 *     the code here, I've just decided to only check for LAME. Thus, for files encoded with this
 *     broken version of LAME (or indeed with other encoders like Gogo), the file bitrate and
 *     duration will be slightly inaccurate.
 *     Please raise a GitHub issue if this is not good enough and make sure to say "I told you not
 *     to half-ass it, Ben".
 */
export default class XingHeader extends VbrHeader {
    private static readonly IDENTIFIER_CBR;
    private static readonly IDENTIFIER_LAME;
    private static readonly IDENTIFIER_VBR;
    private static readonly LAME_HEADER_LENGTH;
    private static readonly XING_HEADER_LENGTH;
    private constructor();
    static fromFile(file: File, mpegHeaderPosition: number, mpegVersion: MpegVersion, mpegChannelMode: ChannelMode, samplesPerFrame: number, samplesPerSecond: number, fallbackFileSize: number): XingHeader | undefined;
}