/** @packageDocumentation Audio properties for Impulse Tracker (IT) files. */
import { AudioProperties } from "../audioProperties.js";
import type { ReadStyle } from "../toolkit/types.js";
/**
 * Audio properties for Impulse Tracker (IT) files.
 */
export declare class ItProperties extends AudioProperties {
    /** Bit mask for the Stereo flag in the IT file header flags field. */
    static readonly Stereo = 1;
    /** Bit mask indicating that a message is attached (in the special field). */
    static readonly MessageAttached = 1;
    /** Number of active channels. */
    private _channels;
    /** Number of non-skip, non-end orders (pattern sequence length). */
    private _lengthInPatterns;
    /** Number of instruments in the file. */
    private _instrumentCount;
    /** Number of samples in the file. */
    private _sampleCount;
    /** Number of patterns in the file. */
    private _patternCount;
    /** Tracker version that created the file. */
    private _version;
    /** Minimum compatible tracker version required to play the file. */
    private _compatibleVersion;
    /** Header flags bitfield. */
    private _flags;
    /** Special flags bitfield (e.g. message attached). */
    private _special;
    /** Global volume (0–128). */
    private _globalVolume;
    /** Mix volume (0–128). */
    private _mixVolume;
    /** Initial tempo in BPM. */
    private _tempo;
    /** Initial speed (ticks per row). */
    private _bpmSpeed;
    /** Panning separation (0–128). */
    private _panningSeparation;
    /** Pitch wheel depth in semitones. */
    private _pitchWheelDepth;
    /**
     * Construct audio properties with the given read style.
     * @param readStyle - Detail level for audio property parsing.
     */
    constructor(readStyle: ReadStyle);
    /** Always 0; IT files do not provide a time-based duration. */
    get lengthInMilliseconds(): number;
    /** Number of active audio channels. */
    get channels(): number;
    /** @param value - Number of active audio channels. */
    set channels(value: number);
    /** Pattern sequence length (number of active orders). */
    get lengthInPatterns(): number;
    /** @param value - Pattern sequence length. */
    set lengthInPatterns(value: number);
    /** `true` if the Stereo flag is set in the header flags field. */
    get stereo(): boolean;
    /** Number of instruments in the file. */
    get instrumentCount(): number;
    /** @param value - Number of instruments. */
    set instrumentCount(value: number);
    /** Number of samples in the file. */
    get sampleCount(): number;
    /** @param value - Number of samples. */
    set sampleCount(value: number);
    /** Number of patterns in the file. */
    get patternCount(): number;
    /** @param value - Number of patterns. */
    set patternCount(value: number);
    /** Tracker version that created the file. */
    get version(): number;
    /** @param value - Tracker version. */
    set version(value: number);
    /** Minimum compatible tracker version required to play the file. */
    get compatibleVersion(): number;
    /** @param value - Compatible tracker version. */
    set compatibleVersion(value: number);
    /** Header flags bitfield. */
    get flags(): number;
    /** @param value - Header flags bitfield. */
    set flags(value: number);
    /** Special flags bitfield (e.g. message attached). */
    get special(): number;
    /** @param value - Special flags bitfield. */
    set special(value: number);
    /** Global volume (0–128). */
    get globalVolume(): number;
    /** @param value - Global volume (0–128). */
    set globalVolume(value: number);
    /** Mix volume (0–128). */
    get mixVolume(): number;
    /** @param value - Mix volume (0–128). */
    set mixVolume(value: number);
    /** Initial tempo in BPM. */
    get tempo(): number;
    /** @param value - Initial tempo in BPM. */
    set tempo(value: number);
    /** Initial speed (ticks per row). */
    get bpmSpeed(): number;
    /** @param value - Initial speed (ticks per row). */
    set bpmSpeed(value: number);
    /** Panning separation (0–128). */
    get panningSeparation(): number;
    /** @param value - Panning separation (0–128). */
    set panningSeparation(value: number);
    /** Pitch wheel depth in semitones. */
    get pitchWheelDepth(): number;
    /** @param value - Pitch wheel depth in semitones. */
    set pitchWheelDepth(value: number);
}
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