import { HMSAudioPlugin } from './HMSAudioPlugin';
import { EventBus } from '../../events/EventBus';
import { HMSLocalAudioTrack } from '../../media/tracks';
/**
 * This class manages applying different plugins on a local audio track. Plugins which need to modify the audio
 * are called in the order they were added. Plugins which do not need to modify the audio are called
 * with the original input.
 *
 * Concepts -
 * Audio Plugin - A module which can take in input audio, do some processing on it and return an AudioNode
 *
 * For Each Plugin, an AudioNode will be created and the source will be created from local audio track.
 * Each Audio node will be connected in the following order
 * source -> first plugin -> second plugin -> third plugin .. so on
 * @see HMSAudioPlugin
 */
export declare class HMSAudioPluginsManager {
    private readonly TAG;
    private readonly hmsTrack;
    private readonly pluginsMap;
    private audioContext?;
    private sourceNode?;
    private destinationNode?;
    private prevAudioNode?;
    private analytics;
    private outputTrack?;
    private pluginAddInProgress;
    constructor(track: HMSLocalAudioTrack, eventBus: EventBus);
    getPlugins(): string[];
    addPlugin(plugin: HMSAudioPlugin): Promise<void>;
    private addPluginInternal;
    validatePlugin(plugin: HMSAudioPlugin): import("./HMSAudioPlugin").HMSPluginSupportResult;
    validateAndThrow(name: string, plugin: HMSAudioPlugin): Promise<void>;
    removePlugin(plugin: HMSAudioPlugin): Promise<void>;
    cleanup(): Promise<void>;
    closeContext(): Promise<void>;
    reprocessPlugins(): Promise<void>;
    private initAudioNodes;
    private processPlugin;
    private connectToDestination;
    private removePluginInternal;
    private createAudioContext;
}