import SDP from './SDP';
import SDPCandidateType from './SDPCandidateType';
/**
 * Implements [[SDP]]. [[SDP]] also includes a few helper functions for parsing string.
 */
export default class DefaultSDP implements SDP {
    sdp: string;
    private static CRLF;
    static rfc7587LowestBitrate: number;
    static rfc7587HighestBitrate: number;
    constructor(sdp: string);
    clone(): DefaultSDP;
    static isRTPCandidate(candidate: string): boolean;
    static linesToSDP(lines: string[]): DefaultSDP;
    static candidateTypeFromString(candidateType: string): SDPCandidateType | null;
    static candidateType(sdpLine: string): string | null;
    static splitLines(blob: string): string[];
    static splitSections(sdp: string): string[];
    static findActiveCameraSection(sections: string[]): number;
    static parseSSRCMedia(ssrcMediaAttributeLine: string): [number, string, string];
    static extractSSRCsFromFIDGroupLine(figGroupLine: string): string;
    static extractSSRCFromAttributeLine(ssrcMediaAttributeLine: string): number;
    static matchPrefix(blob: string, prefix: string): string[];
    lines(): string[];
    hasVideo(): boolean;
    hasCandidates(): boolean;
    hasCandidatesForAllMLines(): boolean;
    withBundleAudioVideo(): DefaultSDP;
    copyVideo(otherSDP: string): DefaultSDP;
    withoutCandidateType(candidateTypeToExclude: SDPCandidateType): DefaultSDP;
    withoutServerReflexiveCandidates(): DefaultSDP;
    withBandwidthRestriction(maxBitrateKbps: number, isFirefox: boolean): DefaultSDP;
    withAudioMaxAverageBitrate(maxAverageBitrate: number | null): DefaultSDP;
    withStereoAudio(): DefaultSDP;
    /**
     * Here we loop through each line in the SDP
     * and construct an array containing the fmtp
     * attribute for all the audio m lines that use
     * the opus codec. If it doesn't use opus codec
     * we add null to the array which tells
     * updateOpusFmtpAttributes that no update is
     * needed for that particular fmtp attribute line
     */
    static findOpusFmtpAttributes(sdpLines: string[]): string[] | null;
    /**
     * Update the fmtp lines in each audio m section
     * that correspond to the opus codec with the parameters
     * specifief in additionalParams
     */
    static updateOpusFmtpAttributes(srcLines: string[], fmtpAttributes: (string | null)[], additionalParams: string[]): string[];
    withUnifiedPlanFormat(): DefaultSDP;
    getUniqueRtpHeaderExtensionId(srcLines: string[]): number;
    withVideoLayersAllocationRtpHeaderExtension(): DefaultSDP;
    preferH264IfExists(): DefaultSDP;
    withOldFashionedMungingSimulcast(videoSimulcastLayerCount: number): DefaultSDP;
    ssrcForVideoSendingSection(): string;
    videoSendSectionHasDifferentSSRC(prevSdp: SDP): boolean;
    removeH264SupportFromSendSection(): DefaultSDP;
}