/*!
 * Copyright (c) 2025-present, Vanilagy and contributors
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/.
 */
import { Frame } from 'node-av';
export declare const getOpenAudioDataCount: () => number;
/**
 * Audio data in decoded form.
 *
 * Corresponds to the WebCodecs AudioData API.
 */
export declare class AudioDataPolyfill {
    /** @internal */
    _data: Uint8Array<ArrayBuffer> | Frame | null;
    private closed;
    /**
     * The sample format, or null if closed.
     */
    readonly format: AudioSampleFormat | null;
    /**
     * The number of samples per second.
     */
    readonly sampleRate: number;
    /**
     * The number of audio frames (samples per channel).
     */
    readonly numberOfFrames: number;
    /**
     * The number of audio channels.
     */
    readonly numberOfChannels: number;
    /**
     * The timestamp in integer microseconds.
     */
    readonly timestamp: number;
    /**
     * The duration in integer microseconds.
     */
    readonly duration: number;
    constructor(init: Frame);
    constructor(init: AudioDataInit);
    private ensureNotClosed;
    /**
     * Returns the number of bytes needed to hold a copy of the audio data.
     */
    allocationSize(options: AudioDataCopyToOptions): number;
    /**
     * Copies the audio data to a destination buffer.
     */
    copyTo(destination: AllowSharedBufferSource, options: AudioDataCopyToOptions): void;
    /**
     * Creates a copy of this audio data.
     */
    clone(): AudioData;
    /**
     * Closes the audio data and releases all resources.
     */
    close(): void;
}