import { type APIConnectOptions, tokenize, tts } from '@livekit/agents';
import type { TTSEncoding, TTSModels } from './models.js';
export interface TTSOptions {
    model: TTSModels | string;
    encoding: TTSEncoding;
    sampleRate: number;
    speed?: number;
    apiKey?: string;
    baseUrl?: string;
    sentenceTokenizer: tokenize.SentenceTokenizer;
    capabilities: tts.TTSCapabilities;
}
export declare class TTS extends tts.TTS {
    private opts;
    label: string;
    get model(): string;
    get provider(): string;
    constructor(opts?: Partial<TTSOptions>);
    synthesize(text: string, connOptions?: APIConnectOptions, abortSignal?: AbortSignal): tts.ChunkedStream;
    stream(options?: {
        connOptions?: APIConnectOptions;
    }): tts.SynthesizeStream;
}
export declare class ChunkedStream extends tts.ChunkedStream {
    #private;
    label: string;
    private opts;
    private text;
    constructor(tts: TTS, text: string, opts: TTSOptions, connOptions?: APIConnectOptions, abortSignal?: AbortSignal);
    protected run(): Promise<void>;
}
export declare class SynthesizeStream extends tts.SynthesizeStream {
    #private;
    private opts;
    private tokenizer;
    label: string;
    private static readonly FLUSH_MSG;
    private static readonly CLOSE_MSG;
    constructor(tts: TTS, opts: TTSOptions, connOptions?: APIConnectOptions);
    private closeWebSocket;
    protected run(): Promise<void>;
}
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