import { ConfigurationService } from '../../configuration';
import { MediaStreamService } from '../../media-stream';
import { TranscriptionService } from '../transcription.service';
import { MediaErrorEvent } from '../../types';
import { TranscriptCallback, TranscriptionState, TranscriptionStateChangeCallback, TranscriptItem } from '../transcription.types';

export declare class TranscriptionController {
    private configService;
    private transcriptionService;
    private mediaStreamService;
    private stateCallbacks;
    private transcriptCallbacks;
    private errorCallbacks;
    private unsubscribers;
    constructor(configService: ConfigurationService, transcriptionService: TranscriptionService, mediaStreamService: MediaStreamService);
    private setupEventListeners;
    private handleConfigurationChange;
    start: () => Promise<void>;
    stop: () => void;
    toggle: () => Promise<void>;
    updateLanguage: (language: string) => void;
    getTranscripts: () => TranscriptItem[];
    clearTranscripts: () => void;
    private restart;
    get state(): TranscriptionState;
    onTranscript: (callback: TranscriptCallback) => VoidFunction;
    onStateChange: (callback: TranscriptionStateChangeCallback) => VoidFunction;
    onError: (callback: (error: MediaErrorEvent) => void) => VoidFunction;
    private _notifyTranscript;
    private _notifyStateChange;
    private _notifyError;
    destroy(): void;
}