import { type DecodedPcmAudio } from '../local/wav.js';
export type AudioFormat = 'wav' | 'webm' | 'ogg' | 'mp3' | 'mp4' | 'unknown';
export declare class AudioNormalizationError extends Error {
    readonly code = "unsupported_audio_codec";
    constructor(message: string, options?: ErrorOptions);
}
export interface AudioDecoderStatus {
    available: boolean;
    command: string;
    error?: string;
}
/** Reports whether compressed browser/mobile recordings can be decoded on this host. */
export declare function getAudioDecoderStatus(): AudioDecoderStatus;
export declare function detectAudioFormat(buffer: Buffer): AudioFormat;
export declare function decodeAudioToMonoFloat32(input: {
    buffer: Buffer;
    signal?: AbortSignal;
}): Promise<DecodedPcmAudio>;
/** Decodes a recording into bounded PCM WAV files and removes all temporary files afterwards. */
export declare function forEachNormalizedAudioSegment(input: {
    filePath: string;
    segmentSeconds?: number;
    maxDurationSeconds?: number;
    signal?: AbortSignal;
}, consume: (buffer: Buffer, index: number) => Promise<void>): Promise<number>;