/** @packageDocumentation Audio properties for Extended Module (XM) tracker files. */
import { AudioProperties } from "../audioProperties.js";
import type { ReadStyle } from "../toolkit/types.js";
/**
 * Audio properties for Extended Module (XM) files.
 *
 * XM is a tracker module format; it has no defined playback duration in
 * milliseconds. The properties describe the module structure (channels,
 * patterns, instruments, and tempo settings).
 */
export declare class XmProperties extends AudioProperties {
    /** Number of channels used by the module. */
    private _channels;
    /** Number of entries in the pattern order table (song length in patterns). */
    private _lengthInPatterns;
    /** XM format version number (e.g. `0x0104`). */
    private _version;
    /** Pattern order table index to restart at when the song loops. */
    private _restartPosition;
    /** Total number of patterns stored in the file. */
    private _patternCount;
    /** Total number of instruments declared in the file. */
    private _instrumentCount;
    /** Total number of samples across all instruments. */
    private _sampleCount;
    /** Raw flags word from the XM header (bit 0: linear frequency table). */
    private _flags;
    /** Default tempo (ticks per row). */
    private _tempo;
    /** Default BPM speed (beats per minute). */
    private _bpmSpeed;
    /**
     * Constructs a new `XmProperties` instance.
     * @param readStyle - The level of detail used when parsing audio properties.
     */
    constructor(readStyle: ReadStyle);
    /**
     * Returns the duration of the track in milliseconds.
     * XM files have no defined playback duration; always returns `0`.
     * @returns `0`.
     */
    get lengthInMilliseconds(): number;
    /**
     * Returns the number of channels used by the module.
     * @returns The channel count.
     */
    get channels(): number;
    /**
     * Sets the number of channels.
     * @param value - The channel count.
     */
    set channels(value: number);
    /**
     * Returns the number of entries in the pattern order table.
     * @returns The song length in patterns.
     */
    get lengthInPatterns(): number;
    /**
     * Sets the number of entries in the pattern order table.
     * @param value - The song length in patterns.
     */
    set lengthInPatterns(value: number);
    /**
     * Returns the XM format version number (e.g. `0x0104` for v1.04).
     * @returns The version word.
     */
    get version(): number;
    /**
     * Sets the XM format version number.
     * @param value - The version word.
     */
    set version(value: number);
    /**
     * Returns the pattern order table index at which the song restarts when looping.
     * @returns The restart position.
     */
    get restartPosition(): number;
    /**
     * Sets the restart position.
     * @param value - The pattern order table index to restart at.
     */
    set restartPosition(value: number);
    /**
     * Returns the total number of patterns stored in the file.
     * @returns The pattern count.
     */
    get patternCount(): number;
    /**
     * Sets the total number of patterns.
     * @param value - The pattern count.
     */
    set patternCount(value: number);
    /**
     * Returns the total number of instruments declared in the file.
     * @returns The instrument count.
     */
    get instrumentCount(): number;
    /**
     * Sets the total number of instruments.
     * @param value - The instrument count.
     */
    set instrumentCount(value: number);
    /**
     * Returns the total number of samples across all instruments.
     * @returns The sample count.
     */
    get sampleCount(): number;
    /**
     * Sets the total number of samples.
     * @param value - The sample count.
     */
    set sampleCount(value: number);
    /**
     * Returns the raw flags word from the XM header.
     * Bit 0 selects between linear and Amiga frequency tables.
     * @returns The flags value.
     */
    get flags(): number;
    /**
     * Sets the raw flags word.
     * @param value - The flags value.
     */
    set flags(value: number);
    /**
     * Returns the default tempo in ticks per row.
     * @returns The tempo value.
     */
    get tempo(): number;
    /**
     * Sets the default tempo.
     * @param value - The tempo (ticks per row).
     */
    set tempo(value: number);
    /**
     * Returns the default BPM speed (beats per minute).
     * @returns The BPM speed.
     */
    get bpmSpeed(): number;
    /**
     * Sets the default BPM speed.
     * @param value - The BPM speed (beats per minute).
     */
    set bpmSpeed(value: number);
}
//# sourceMappingURL=xmProperties.d.ts.map