/**
 * Whisper.cpp adapter using @remotion/whisper-web
 *
 * Uses whisper.cpp compiled to WASM for high-accuracy speech recognition.
 * More stable than transformers.js implementation.
 */
import type { InitState, OnProgress } from '../../core/types.js';
import type { STTAdapter, STTCapabilities, STTOptions, STTResult, WhisperCppSTTOptions } from './types.js';
/**
 * Whisper.cpp adapter for high-accuracy speech recognition
 */
export declare class WhisperCppSTTAdapter implements STTAdapter {
    readonly type: "whisper-cpp";
    private _initState;
    private options;
    private _isListening;
    private mediaRecorder;
    private audioChunks;
    private stream;
    private resultListeners;
    private errorListeners;
    private startListeners;
    private endListeners;
    private whisperWeb;
    private modelDownloaded;
    private processingPromise;
    private processingResolve;
    constructor(options?: Partial<WhisperCppSTTOptions>);
    get initState(): InitState;
    private get model();
    ensureInitialized(onProgress?: OnProgress): Promise<void>;
    private importWhisperWeb;
    getCapabilities(): STTCapabilities;
    start(_options?: STTOptions): Promise<void>;
    private getSupportedMimeType;
    private processRecording;
    stop(): Promise<void>;
    abort(): void;
    isListening(): boolean;
    onResult(callback: (result: STTResult) => void): () => void;
    onError(callback: (error: Error) => void): () => void;
    onStart(callback: () => void): () => void;
    onEnd(callback: () => void): () => void;
    dispose(): Promise<void>;
}
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