import { MediaInfoStream } from '../../modules/ffmpeg/types/FFmpeg.types';
export interface AudioSampleExtractionParams {
    mediaId: string;
    mediaSource: Blob | File;
    filename: string;
    fileSize: number;
    audioStream: MediaInfoStream | undefined;
    storePath: string | undefined;
}
/**
 * Main entry point for audio sample extraction.
 *
 * Strategy:
 * 1. File < 1GB → decodeAudioData directly on the media source (no FFmpeg)
 * 2. File >= 1GB, decoded samples fit in memory → FFmpeg demux audio stream, then decodeAudioData
 * 3. Decoded samples would overflow or compressed audio too large → FFmpeg chunked extraction,
 *    decode + post-process per chunk, then join downsampled results
 */
export declare function extractAudioSamples(params: AudioSampleExtractionParams): Promise<Float32Array[] | null>;