/**
 * OpenAI Realtime Voice API Handler
 *
 * Implementation of bidirectional voice communication using OpenAI's Realtime API.
 *
 * @module voice/providers/OpenAIRealtime
 */
import { BaseRealtimeHandler } from "../RealtimeVoiceAPI.js";
import type { TTSAudioFormat, RealtimeAudioChunk, RealtimeConfig, RealtimeSession } from "../../types/index.js";
/**
 * OpenAI Realtime API Handler
 *
 * Implements bidirectional voice communication with OpenAI's Realtime API.
 *
 * @see https://platform.openai.com/docs/api-reference/realtime
 */
export declare class OpenAIRealtime extends BaseRealtimeHandler {
    readonly name = "openai-realtime";
    private readonly apiKey;
    private ws;
    private audioChunkIndex;
    constructor(apiKey?: string);
    isConfigured(): boolean;
    getSupportedFormats(): TTSAudioFormat[];
    connect(config: RealtimeConfig): Promise<RealtimeSession>;
    disconnect(): Promise<void>;
    sendAudio(audio: Buffer | RealtimeAudioChunk): Promise<void>;
    sendText(text: string): Promise<void>;
    triggerResponse(): Promise<void>;
    cancelResponse(): Promise<void>;
    /**
     * Send session update with configuration
     */
    private sendSessionUpdate;
    /**
     * Wait for session.created event
     */
    private waitForSessionCreated;
    /**
     * Handle incoming WebSocket messages
     */
    private handleMessage;
    /**
     * Handle function call from model
     */
    private handleFunctionCall;
}