/**
 * @license
 * Copyright 2024 Nuraly, Laabidi Aymen
 * SPDX-License-Identifier: MIT
 *
 * Re-encodes any browser-recorded audio blob to OGG Opus at 32 kbps.
 * Falls back to the original blob unchanged on browsers that do not support
 * OGG Opus MediaRecorder recording (e.g. Safari).
 *
 * Pipeline:
 *   input blob → AudioContext.decodeAudioData → BufferSource → MediaStreamDestination
 *   → MediaRecorder(ogg/opus, 32 kbps) → output blob
 */
export interface CompressResult {
    blob: Blob;
    mimeType: string;
    ext: string;
}
/** Returns true if the current browser can record OGG Opus via MediaRecorder (Chrome/Firefox). */
export declare function canEncodeOgg(): boolean;
/**
 * Re-encodes `inputBlob` to OGG Opus at 32 kbps.
 * If the browser does not support OGG Opus recording (Safari), returns the original blob unchanged.
 */
export declare function compressToOpus(inputBlob: Blob, originalMime: string): Promise<CompressResult>;
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