/**
 * Indicates the types o media represented by a {@link ICodec} or {@link Properties}. These values
 * can be combined to represent multiple media types.
 */
export declare enum MediaTypes {
    /**
     * No media is present
     */
    None = 0,
    /**
     * Audio is present
     */
    Audio = 1,
    /**
     * Video is present
     */
    Video = 2,
    /**
     * A photo is present
     */
    Photo = 4,
    /**
     * Text is present
     */
    Text = 8,
    /**
     * Lossless audio is present. This also implies audio is present.
     */
    LosslessAudio = 17
}
/**
 * Interface that provides basic information common to all media codecs
 */
export interface ICodec {
    /**
     * Gets a text description of the media represented by the current instance.
     */
    description: string;
    /**
     * Duration of the media in milliseconds represented by the current instance.
     * @TODO Ensure milliseconds is the right way to interpret this field
     */
    durationMilliseconds: number;
    /**
     * Types of media represented by the current instance, bitwise combined.
     */
    mediaTypes: MediaTypes;
}
/**
 * Interface that inherits the common codec information and adds audio-specific information.
 * When dealing with an {@link ICodec}, if {@link ICodec.mediaTypes} contains
 * {@link MediaTypes.Audio}, it is safe to assume that the object also inherits {@link IAudioCodec}
 * and can be recast without issue.
 */
export interface IAudioCodec extends ICodec {
    /**
     * Bitrate of the audio in kilobits per second represented by the current instance.
     */
    audioBitrate: number;
    /**
     * Number of channels in the audio represented by the current instance.
     */
    audioChannels: number;
    /**
     * Sample rate of the audio represented by the current instance.
     */
    audioSampleRate: number;
}
/**
 * This interface provides information specific to lossless audio codecs.
 * When dealing with an {@link ICodec}, if {@link ICodec.mediaTypes} contains
 * {@link MediaTypes.LosslessAudio}, it is safe to assume that the object also inherits
 * {@link ILosslessAudioCodec} and can be recast without issue.
 */
export interface ILosslessAudioCodec extends IAudioCodec {
    /**
     * Number of bits per sample in the audio represented by the current instance.
     */
    bitsPerSample: number;
}
/**
 * Interface that inherits the common codec information and adds video-specific information.
 * When dealing with an {@link ICodec}, if {@link ICodec.mediaTypes} contains
 * {@link MediaTypes.Video}, it is safe to assume that the object also inherits {@link IVideoCodec}
 * and can be recast without issue.
 */
export interface IVideoCodec extends ICodec {
    /**
     * Height of the video in pixels represented by the current instance.
     */
    videoHeight: number;
    /**
     * Width of the video in pixels represented by the current instance.
     */
    videoWidth: number;
}
/**
 * Interface that inherits the common codec information and adds photo-specific information.
 * When dealing with an {@link ICodec}, if {@link ICodec.mediaTypes} contains
 * {@link MediaTypes.Photo}, it is safe to assume that the object also inherits {@link IPhotoCodec}
 * and can be recast without issue.
 */
export interface IPhotoCodec extends ICodec {
    /**
     * Height of the photo in pixels represented by the current instance.
     */
    photoHeight: number;
    /**
     * Format-specific quality indicator of the photo represented by the current instance.
     * A value of `0` means there was no quality indicator for the format or file.
     */
    photoQuality: number;
    /**
     * Width of the photo in pixels represented by the current instance.
     */
    photoWidth: number;
}
export declare class Properties implements ILosslessAudioCodec, IVideoCodec, IPhotoCodec {
    private readonly _codecs;
    private readonly _duration;
    /**
     * Constructs and initializes a new instance of {@link Properties} with the specified codecs and
     * duration.
     * @param durationMilli Duration of the media in milliseconds or 0 if the duration is to be
     *        read from the codecs.
     * @param codecs Array of codecs to be used in the new instance.
     */
    constructor(durationMilli?: number, codecs?: ICodec[]);
    /**
     * Gets the codecs contained in the current instance.
     * @remarks
     *     The list of codecs should not be modified. As such, the returned codec list is a
     *     copy of codec list stored in this instance.
     */
    get codecs(): ICodec[];
    /**
     * Gets a string description of the media represented by the current instance. Values are
     * joined by semicolons.
     */
    get description(): string;
    /**
     * Gets the duration of the media represented by the current instance. If the value was set in
     * the constructor, that value is returned, otherwise the longest codec duration is used.
     */
    get durationMilliseconds(): number;
    /**
     * Gets the types of media represented by the current instance.
     */
    get mediaTypes(): MediaTypes;
    /**
     * Gets the bitrate of the audio represented by the current instance. This value is equal to
     * the first non-zero audio bitrate, or zero if no codecs with audio information were found.
     */
    get audioBitrate(): number;
    /**
     * Gets the number of channels in the audio represented by the current instance.
     */
    get audioChannels(): number;
    /**
     * Gets the sample rate of the audio represented by the current instance. This value is equal
     * to the first non-zero audio bitrate, or zero if no audio codecs were found.
     */
    get audioSampleRate(): number;
    /**
     * Gets the number of bits per sample in the audio represented by the current instance. This
     * value is equal to the first non-zero quantization, or zero if no lossless audio codecs were
     * found in the current instance.
     */
    get bitsPerSample(): number;
    /**
     * Gets the height of the photo in pixels represented by the current instance.
     */
    get photoHeight(): number;
    /**
     * Gets the format-specific quality identifier of the photo represented by the current
     * instance. A value of `0` means that there was no quality indicator for the format or file.
     */
    get photoQuality(): number;
    /**
     * Gets the width of the photo in pixels represented by the current instance.
     */
    get photoWidth(): number;
    /**
     * Gets the height of the video represented by the current instance.
     * This value is equal to the first non-zero video height;
     */
    get videoHeight(): number;
    /**
     * Gets the width of the video represented by the current instance.
     * This value is equal to the first non-zero video height.
     */
    get videoWidth(): number;
    private findCodecProperty;
}