import { Tensor } from "openvino-node";
import { Text2SpeechPipeline as Text2SpeechPipelineWrapper } from "../addon.js";
import { Text2SpeechDecodedResults } from "../decodedResults.js";
import { SpeechGenerationConfig, Text2SpeechPipelineProperties } from "../utils.js";
/**
 * Options for Text2Speech generation methods.
 */
export type Text2SpeechGenerateOptions = {
    /** Optional speaker embedding tensor to condition voice characteristics. */
    speakerEmbedding?: Tensor;
    /** Additional generation properties passed to the native pipeline. */
    generationConfig?: SpeechGenerationConfig;
};
/**
 * Pipeline for text-to-speech synthesis.
 *
 * Converts text input into audio waveform tensors.
 * Use the factory method `PipelineFactory.Text2SpeechPipeline()` to create and
 * initialize an instance.
 */
export declare class Text2SpeechPipeline {
    protected readonly modelPath: string;
    protected readonly device: string;
    protected pipeline: Text2SpeechPipelineWrapper | null;
    protected readonly properties: Text2SpeechPipelineProperties;
    /**
     * Construct a Text2Speech pipeline from a folder containing model IRs.
     * @param modelPath - Path to the folder with model IRs.
     * @param device - Inference device (e.g. "CPU", "GPU").
     * @param properties - Device and pipeline properties.
     */
    constructor(modelPath: string, device: string, properties?: Text2SpeechPipelineProperties);
    /**
     * Load the pipeline. Must be called once before generate().
     */
    init(): Promise<void>;
    /**
     * Generate audio from a single text or batch of texts.
     * @param input - Text string or array of text strings to synthesize.
     * @param options - Optional speaker embedding and generation config.
     * @returns Decoded results with audio waveform tensors and perf metrics.
     */
    generate(input: string | string[], options?: Text2SpeechGenerateOptions): Promise<Text2SpeechDecodedResults>;
    /**
     * Get current speech generation config.
     */
    getGenerationConfig(): SpeechGenerationConfig;
    /**
     * Update speech generation config.
     */
    setGenerationConfig(config: SpeechGenerationConfig): void;
}