/**
 * @holoscript/core Speech Recognizer Interface
 *
 * Defines the @builtin runtime interface for speech-to-text and phoneme recognition.
 * Runtimes (WASM/Node.js) implement this to bridge with whisper.cpp or other providers.
 */
import { PhonemeTimestamp } from '@holoscript/core';
/**
 * Speech recognition configuration
 */
export interface SpeechRecognizerConfig {
    /** Backend provider (e.g., 'whisper.cpp', 'web-speech') */
    backend: string;
    /** Model size/type (e.g., 'tiny', 'base', 'small') */
    model?: string;
    /** Enable phoneme-level timestamp output */
    outputPhonemes?: boolean;
    /** Recognition language (ISO code) */
    language?: string;
    /** Sampling rate (default 16000) */
    sampleRate?: number;
}
/**
 * Transcription result segment
 */
export interface TranscriptionSegment {
    text: string;
    start: number;
    end: number;
    phonemes?: PhonemeTimestamp[];
}
/**
 * SpeechRecognizer @builtin Interface
 */
export interface SpeechRecognizer {
    /** Initialize the recognizer with config */
    initialize(config: SpeechRecognizerConfig): Promise<void>;
    /**
     * Transcribe an audio stream or buffer.
     * Returns segments with optional phoneme-level timestamps.
     */
    transcribe(audio: ArrayBuffer | Blob | unknown, options?: {
        phonemeMode?: boolean;
        timestamps?: boolean;
    }): Promise<TranscriptionSegment[]>;
    /** Stop any active recognition */
    stop(): void;
    /** Dispose resources */
    dispose(): void;
}
/**
 * Global registry for builtin SpeechRecognizers
 */
export declare const speechRecognizerRegistry: Map<string, SpeechRecognizer>;
/**
 * Register a speech recognizer implementation
 */
export declare function registerSpeechRecognizer(name: string, recognizer: SpeechRecognizer): void;
/**
 * Get a registered speech recognizer
 */
export declare function getSpeechRecognizer(name: string): SpeechRecognizer | undefined;
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