import { Clip } from '../clips/tav-clip';
import { tav } from '../tav';
import { Asset } from './tav-asset';
/**
 * AudioAsset is an asset that can be used to play audio.
 * @hideconstructor
 * @category Assets
 */
export declare class AudioAsset extends Asset {
    /**
     * Creates a TAVMedia Audio object from a specified range of a audio file, return null if the file does
     * not exist or it's not a valid audio file.
     * @param path The path of the audio file.
     * @param duration Externally specified duration of the file, the default value 0 means to use the
     *    actual duration
     */
    static MakeFromPath(path: string, duration?: number): Promise<AudioAsset>;
    /**
     * Returns `'AudioAsset'`
     */
    readonly type = "AudioAsset";
    private audioDuration;
    private clipId;
    /**
     * @ignore
     */
    $getCopyOrSelfWillBeUsedByClip(clip: Clip): Promise<AudioAsset>;
    protected doPrepare(): Promise<void>;
    /**
     * Returns the duration of this asset.
     */
    get duration(): number;
    protected createAsset(): Promise<tav.AudioAsset> | undefined;
}