import type { DecodedRealtimeServerEvent, RealtimeVoiceAudioFormat, RealtimeVoiceFrame } from './types.js';
export declare const CLIENT_EVENT_SESSION_CREATE = "session.create";
export declare const CLIENT_EVENT_AUDIO_UPSTREAM_APPEND = "audio.upstream.append";
export declare const CLIENT_EVENT_AUDIO_UPSTREAM_CLEAR = "audio.upstream.clear";
export declare const CLIENT_EVENT_SESSION_CLOSE = "session.close";
export declare const SERVER_EVENT_SESSION_CREATED = "session.created";
export declare const SERVER_EVENT_AUDIO_DOWNSTREAM_DELTA = "audio.downstream.delta";
export declare const SERVER_EVENT_SESSION_CLOSED = "session.closed";
export declare const SERVER_EVENT_ERROR = "error";
export declare const CLIENT_CLOSE_REASON_USER_LEFT = 1;
export interface EncodedRealtimeClientEvent {
    eventId: string;
    payload: Buffer;
}
export interface EncodeClientEventOptions {
    eventId?: string;
    createdAt?: string;
}
export declare function encodeSessionCreateEvent(format: RealtimeVoiceAudioFormat, opts?: EncodeClientEventOptions): EncodedRealtimeClientEvent;
export declare function encodeAudioFrameEvent(frame: RealtimeVoiceFrame, sessionId: bigint, opts?: EncodeClientEventOptions): EncodedRealtimeClientEvent;
export declare function encodeAudioUpstreamClearEvent(sessionId: bigint, opts?: EncodeClientEventOptions): EncodedRealtimeClientEvent;
export declare function encodeSessionCloseEvent(sessionId: bigint, opts?: EncodeClientEventOptions): EncodedRealtimeClientEvent;
export declare function decodeServerEvent(data: Buffer): DecodedRealtimeServerEvent;
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