import { PixelStreaming } from '@epicgames-ps/lib-pixelstreamingfrontend-ue5.6';
/**
 * Streaming 미디어 관리를 담당하는 서비스
 * 책임: TTS 상호작용, 오디오 처리, Ready state 관리
 */
export declare class StreamingMediaService {
    private static instance;
    private stream;
    private mediaState;
    private isReadyToSendListeners;
    private hasSentResetMessage;
    private hasEmittedConversationEnd;
    private hasEmittedShortformDownloadReady;
    private eventBus;
    private audioManager;
    private constructor();
    static getInstance(): StreamingMediaService;
    setStream(stream: PixelStreaming | null): void;
    private setupStreamMediaHandlers;
    private setupBeforeUnloadHandler;
    private stopKeepAlive;
    /**
     * 중앙화된 데이터 채널 전송 메서드
     * 모든 emitUIInteraction 호출을 이 메서드를 통해 래핑
     */
    private emitToDataChannel;
    handleResponseFunction(data: string): Promise<void>;
    private sendWebConnectedInfo;
    private handleLipmotionStart;
    private handleConversationEnd;
    private handleShortformPreviewEnd;
    private handleShortformDownloadReady;
    private handleUpdateMessage;
    ttsInteractions(inputText: string, voiceId: string, languageId: string, TTSService: string): void;
    sendStartConversation(): void;
    endConversation(): void;
    resetConversationEndFlag(): void;
    resetShortformDownloadReadyFlag(): void;
    autoPlayVideo(): void;
    play(): void;
    isReadyToSendMessages(): boolean;
    isStreamReady(): boolean;
    resetIsReadyToSend(): void;
    resetIsStreamReady(): void;
    setIsReadyToSend(isReady: boolean): void;
    setIsStreamReady(isReady: boolean): void;
    sendAccountType(): void;
    addIsReadyToSendListener(listener: (isReady: boolean) => void): void;
    removeIsReadyToSendListener(listener: (isReady: boolean) => void): void;
    setVolume(volume: number): void;
    getVolume(): number;
    sendZoomIn(): void;
    sendZoomOut(): void;
    cleanup(): void;
}