export interface EventListener {
    callback: Function;
    once: boolean;
}
/**
 * Manages the lifecycle of audio source nodes, including creation, connection,
 * destruction, and automatic event listener management.
 */
export declare class AudioSourceController {
    private currentSource;
    private mediaElementSource;
    private endedHandler;
    private gainNode;
    private audioContext;
    private eventListeners;
    constructor(audioContext: AudioContext, gainNode: GainNode);
    /**
     * Set the source node and establish connections and event listeners.
     */
    setSource(source: AudioBufferSourceNode | HTMLAudioElement): void;
    /**
     * Get the current source node.
     */
    getSource(): AudioBufferSourceNode | HTMLAudioElement | null;
    /**
     * Refresh the source node with a new one, preserving connections and event listeners.
     */
    refreshSource(newSource: AudioBufferSourceNode | HTMLAudioElement): void;
    /**
     * Disconnect the current source node and clear event listeners.
     */
    disconnectSource(): void;
    /**
     * Setup event listeners for the current source node.
     */
    private setupEventListeners;
    /**
     * Remove all event listeners from the current source node.
     */
    private removeAllEventListeners;
    /**
     * Emit an event to all registered listeners.
     */
    emit(event: string): void;
    /**
     * Add an event listener.
     */
    on(event: string, callback: Function): void;
    /**
     * Remove an event listener.
     */
    off(event: string, callback: Function): void;
    /**
     * Add a one-time event listener.
     */
    once(event: string, callback: Function): void;
    /**
     * Stop the current source node.
     */
    stop(): void;
    /**
     * Destroy the controller and release all resources.
     */
    destroy(): void;
    /**
     * Start the current source node.
     */
    start(when?: number, offset?: number): void;
    /**
     * Pause the current source node.
     */
    pause(): void;
}