import type { Connectable } from '../../interfaces';
import type { ChannelNumber } from '../../types';
import type { Visualizer, VisualizerParams, Color, GraphicsApi, Gradient, Gradients, Shape, Font, GraphicsStyles, SpectrumScale } from './Visualizer';
import type { TimeOverviewParams, CurrentTimeStyles, MouseEventTypes, DragMode, DragCallbackFunction } from './TimeOverview';
import type { TimeParams } from './Time';
import type { FFTParams } from './FFT';
import type { SpectrogramParams } from './Spectrogram';
import type { Spectrum, SpectrumParams } from './Spectrum';
import type { AmplitudeSpectrumParams, AmplitudeSpectrumUnit } from './AmplitudeSpectrum';
import type { PhaseSpectrumParams, PhaseSpectrumUnit } from './PhaseSpectrum';
import { TimeOverview } from './TimeOverview';
import { Time } from './Time';
import { FFT } from './FFT';
import { Spectrogram } from './Spectrogram';
import { AmplitudeSpectrum } from './AmplitudeSpectrum';
import { PhaseSpectrum } from './PhaseSpectrum';
export type Domain = 'timeoverview' | 'time' | 'fft' | 'spectrogram' | 'offline-amplitude-spectrum' | 'offline-phase-spectrum';
export type DataType = 'uint' | 'float';
export type FFTSize = 32 | 64 | 128 | 256 | 512 | 1024 | 2048 | 4096 | 8192 | 16384 | 32768;
export type { Visualizer, VisualizerParams, Color, GraphicsApi, Gradient, Gradients, Shape, Font, GraphicsStyles, SpectrumScale, TimeOverview, TimeOverviewParams, CurrentTimeStyles, MouseEventTypes, DragMode, DragCallbackFunction, Time, TimeParams, FFT, FFTParams, Spectrogram, SpectrogramParams, Spectrum, SpectrumParams, AmplitudeSpectrum, AmplitudeSpectrumParams, AmplitudeSpectrumUnit, PhaseSpectrum, PhaseSpectrumParams, PhaseSpectrumUnit };
export type AnalyserParams = {
    fftSize?: FFTSize;
    readonly frequencyBinCount?: number;
    minDecibels?: number;
    maxDecibels?: number;
    smoothingTimeConstant?: number;
};
/**
 * This private class manages private classes (`TimeOverview`, `Time`, `FFT`, `Spectrogram`, `AmplitudeSpectrum`, `PhaseSpectrum`) for visualizing sound wave.
 */
export declare class Analyser implements Connectable {
    private analysers;
    private splitter;
    private input;
    private timeOverviews;
    private times;
    private ffts;
    private spectrograms;
    private timeDomainAnimationIds;
    private timeDomainTimerIds;
    private frequencyDomainAnimationIds;
    private frequencyDomainTimerIds;
    private spectrogramAnimationIds;
    private spectrogramTimerIds;
    private amplitudeSpectrum;
    private phaseSpectrum;
    private minDecibels;
    private maxDecibels;
    /**
     * @param {AudioContext} context This argument is in order to use Web Audio API.
     */
    constructor(context: AudioContext);
    /**
     * This method visualizes sound wave.
     * @param {Domain} domain This argument is one of 'timeoverview', 'time', 'fft', 'spectrogram', 'offline-amplitude-spectrum', 'offline-phase-spectrum'.
     * @param {ChannelNumber} channelNumber This argument is channel number (Left: 0, Right: 1 ...).
     * @param {AudioBuffer} buffer This argument is instance of `AudioBuffer` (If domain is 'timeoverview', this argument is required).
     * @param {Float32Array} offlineData This argument is amplitude spectrum or phase spectrum.
     * @return {Analyser} Return value is for method chain.
     */
    start(domain: Domain, channelNumber?: ChannelNumber, buffer?: AudioBuffer, offlineData?: Float32Array): Analyser;
    /**
     * This method stops visualizer.
     * @param {Domain} domain This argument is one of 'timeoverview', 'time', 'fft', 'spectrogram'.
     * @param {ChannelNumber} channelNumber This argument is channel number (Left: 0, Right: 1 ...).
     * @return {Analyser} Return value is for method chain.
     */
    stop(domain: Domain, channelNumber?: ChannelNumber): Analyser;
    /**
     * This method gets or sets parameters for analyser.
     * This method is overloaded for type interface and type check.
     * @param {keyof AnalyserParams|AnalyserParams} params This argument is string if getter. Otherwise, setter.
     * @return {AnalyserParams[keyof AnalyserParams]|Analyser} Return value is parameter for analyser if getter.
     *     Otherwise, return value is for method chain.
     */
    param(params: 'fftSize'): number;
    param(params: 'frequencyBinCount'): number;
    param(params: 'minDecibels'): number;
    param(params: 'maxDecibels'): number;
    param(params: 'smoothingTimeConstant'): number;
    param(params: AnalyserParams): Analyser;
    /**
     * This method selects domain for visualization.
     * This method is overloaded for type interface and type check.
     * @param {Domain} domain This argument is one of 'timeoverview', 'time', 'fft', 'spectrogram', 'offline-amplitude-spectrum', 'offline-phase-spectrum'.
     * @param {ChannelNumber} channelNumber This argument is channel number (Left: 0, Right: 1 ...).
     * @return {TimeOverview|Time|FFT|Spectrogram|AmplitudeSpectrum|PhaseSpectrum|Analyser} Return value is instance of selected `Visualizer` class.
     */
    domain(domain: 'timeoverview', channelNumber: ChannelNumber): TimeOverview;
    domain(domain: 'time', channelNumber?: ChannelNumber): Time;
    domain(domain: 'fft', channelNumber?: ChannelNumber): FFT;
    domain(domain: 'spectrogram', channelNumber?: ChannelNumber): Spectrogram;
    domain(domain: 'offline-amplitude-spectrum'): AmplitudeSpectrum;
    domain(domain: 'offline-phase-spectrum'): PhaseSpectrum;
    /**
     * This method gets instance of `AnalyserNode`.
     * @param {ChannelNumber} channelNumber This argument is channel number (Left: 0, Right: 1 ...).
     * @return {AnalyserNode}
     */
    get(channelNumber?: ChannelNumber): AnalyserNode | null;
    /** @override */
    get INPUT(): GainNode;
    /** @override */
    get OUTPUT(): GainNode;
}
//# sourceMappingURL=index.d.ts.map