/** @packageDocumentation Audio properties implementation for the ASF / WMA format. */
import { AudioProperties } from "../audioProperties.js";
import { ReadStyle } from "../toolkit/types.js";
/** Windows Media Audio codec variant. */
export declare enum AsfCodec {
    /** The codec could not be identified. */
    Unknown = 0,
    /** Windows Media Audio v1 (WMA1, format tag 0x0160). */
    WMA1 = 1,
    /** Windows Media Audio v2 (WMA2, format tag 0x0161). */
    WMA2 = 2,
    /** Windows Media Audio 9 Professional (format tag 0x0162). */
    WMA9Pro = 3,
    /** Windows Media Audio 9 Lossless (format tag 0x0163). */
    WMA9Lossless = 4
}
/**
 * Audio properties extracted from an ASF/WMA stream.
 *
 * All setter methods are intended for use by {@link AsfFile} during parsing
 * and are not part of the public API.
 */
export declare class AsfProperties extends AudioProperties {
    /** Duration of the stream in milliseconds. */
    private _length;
    /** Average bitrate in kb/s. */
    private _bitrate;
    /** Sample rate in Hz. */
    private _sampleRate;
    /** Number of audio channels. */
    private _channels;
    /** Bits per sample (bit depth). */
    private _bitsPerSample;
    /** Detected WMA codec variant. */
    private _codec;
    /** Human-readable codec name from the Codec List Object. */
    private _codecName;
    /** Human-readable codec description from the Codec List Object. */
    private _codecDescription;
    /** `true` when any content-encryption object is found. */
    private _encrypted;
    /**
     * @param readStyle - Level of detail to use when reading properties.
     */
    constructor(readStyle?: ReadStyle);
    /** Duration of the audio stream in milliseconds. */
    get lengthInMilliseconds(): number;
    /** Average bitrate of the stream in kb/s. */
    get bitrate(): number;
    /** Sample rate of the stream in Hz. */
    get sampleRate(): number;
    /** Number of audio channels. */
    get channels(): number;
    /** Bits per sample (bit depth). */
    get bitsPerSample(): number;
    /** Detected WMA codec variant. */
    get codec(): AsfCodec;
    /** Human-readable codec name (e.g. `"Windows Media Audio"`). */
    get codecName(): string;
    /** Human-readable codec description (e.g. bitrate/mode information). */
    get codecDescription(): string;
    /** `true` if the stream is encrypted with any DRM scheme. */
    get isEncrypted(): boolean;
    /**
     * Set the stream duration.
     * @param value - Duration in milliseconds.
     */
    setLengthInMilliseconds(value: number): void;
    /**
     * Set the average bitrate.
     * @param value - Bitrate in kb/s.
     */
    setBitrate(value: number): void;
    /**
     * Set the sample rate.
     * @param value - Sample rate in Hz.
     */
    setSampleRate(value: number): void;
    /**
     * Set the channel count.
     * @param value - Number of audio channels.
     */
    setChannels(value: number): void;
    /**
     * Set the bit depth.
     * @param value - Bits per sample.
     */
    setBitsPerSample(value: number): void;
    /**
     * Map a WMA format tag to the corresponding {@link AsfCodec} variant.
     * @param formatTag - The `wFormatTag` field from the WAVEFORMATEX structure.
     */
    setCodec(formatTag: number): void;
    /**
     * Set the human-readable codec name.
     * @param value - Codec name string from the Codec List Object.
     */
    setCodecName(value: string): void;
    /**
     * Set the human-readable codec description.
     * @param value - Description string from the Codec List Object.
     */
    setCodecDescription(value: string): void;
    /**
     * Mark the stream as encrypted.
     * @param value - `true` when a content-encryption object is present.
     */
    setEncrypted(value: boolean): void;
}
//# sourceMappingURL=asfProperties.d.ts.map