import { PlayOptions, Stream } from '../animation';
import { Component } from '../component';
import { ContextManager } from '../context';
import { Event } from '../event';
import { Observable } from '../observable';
export interface AudioConstructorProps {
    /** @zprop
     * @zvalues files *.+(mp3|wav)
     */
    source: string;
    /**
     * @zprop
     * @zdefault default
     */
    audioLayer?: string;
    /** @zprop
     * @zdefault false
     */
    autoplay?: boolean;
}
/**
 * The Audio class represents an audio component that can be controlled.
 * It provides methods to play, pause, stop, and seek the audio.
 * It also provides observables for volume and mute state, and events for when the audio ends, stops, pauses, and plays.
 *
 * @zcomponent
 * @ztag core/audio
 * @zgroup Media
 * @zicon music_note
 * @zstream
 */
export declare class Audio extends Component<undefined, AudioConstructorProps> implements Stream {
    /** @zui */ readonly onEnded: Event<[Audio]>;
    /** @zui */ readonly onStop: Event<[Audio]>;
    /** @zui */ readonly onPause: Event<[Audio]>;
    /** @zui */ readonly onPlay: Event<[Audio]>;
    readonly audioContext: AudioContext;
    readonly destination: AudioNode;
    audioBuffer?: AudioBuffer;
    private _gain;
    private _reversed?;
    private _playhead;
    private _rate;
    private _session?;
    /**
     * Creates a new Audio component.
     * @param mgr - The current ContextManager
     * @param props - The constructor properties.
     */
    constructor(mgr: ContextManager, props: AudioConstructorProps);
    private _load;
    private _updateVolume;
    /** @zprop
     * @zdefault false
     * @zgroup Audio
     * @zgrouppriority 20
     */
    readonly muted: Observable<boolean, never>;
    private _getReversed;
    /**
     * @zprop
     * @ztype proportion
     * @zgroup Audio
     * @zgrouppriority 20
     * @zdefault 1
     */
    readonly volume: Observable<number, never>;
    /** @zprop
     * @zdefault false
     * @zgroup Audio
     * @zgrouppriority 20
     */
    readonly loop: Observable<boolean, never>;
    /**
     * @zprop
     * @zui
     */
    play(opts?: PlayOptions): void;
    private _pause;
    /**
     * @zprop
     * @zui
     */
    pause(): void;
    /**
     * @zprop
     * @zui
     */
    stop(): void;
    /**
     * @zprop
     * @zui
     */
    seek(/** @ztype time-milliseconds */ t: number): void;
    length(): number | undefined;
    dispose(): never;
}