/**
 * This class handles the codec selection mechanism for the conference based on the config.js settings.
 * The preferred codec is selected based on the settings and the list of codecs supported by the browser.
 * The preferred codec is published in presence which is then used by the other endpoints in the
 * conference to pick a supported codec at join time and when the call transitions between p2p and jvb
 * connections.
 */
export class CodecSelection {
    /**
     * Creates a new instance for a given conference.
     *
     * @param {JitsiConference} conference the conference instance
     * @param {*} options
     * @param {string} options.jvb settings (codec list, preferred and disabled) for the jvb connection.
     * @param {string} options.p2p settings (codec list, preferred and disabled) for the p2p connection.
     */
    constructor(conference: any, options: any);
    conference: any;
    options: any;
    codecPreferenceOrder: {};
    /**
     * Returns a list of video codecs that are supported by the browser.
     *
     * @param {string} connectionType - media connection type, p2p or jvb.
     * @returns {Array}
     */
    _getSupportedVideoCodecs(connectionType: string): any[];
    /**
     * Filters VP9 from the list of the preferred video codecs for JVB if E2EE is enabled.
     *
     * @returns {Array}
     */
    _maybeFilterJvbCodecs(): any[];
    /**
     * Sets the codec on the media session based on the codec preference order configured in config.js and the supported
     * codecs published by the remote participants in their presence.
     *
     * @param {JingleSessionPC} mediaSession session for which the codec selection has to be made.
     */
    _selectPreferredCodec(mediaSession: any): void;
    /**
     * Returns the current codec preference order for the given connection type.
     *
     * @param {String} connectionType The media connection type, 'p2p' or 'jvb'.
     * @returns {Array<string>}
     */
    getCodecPreferenceList(connectionType: string): Array<string>;
}