import { Observable } from 'rxjs';
import { AudioPeakProcessorMessageEvent, Peaks } from '../types';
export interface VuMeterApi {
    /**
     * Attaches peak processor message stream. If method is called multiple times, previous event stream is detached and only last event stream remains active
     *
     * @param eventStreamFactory Peak processor message stream provided as Observable
     */
    attachSource(eventStreamFactory: Observable<Observable<AudioPeakProcessorMessageEvent>>): VuMeterApi;
    /**
     * @returns Peaks
     */
    getPeaks(): Peaks;
    /**
     * Cleans up resources and event handlers
     */
    destroy(): void;
}