import { TrackBaseInfo, TrackMergeOptions } from "../types";
export declare class MergerSessionController {
    onAddTracks: (tracks: TrackBaseInfo[]) => any;
    onRemoveTracks: (tracks: TrackBaseInfo[]) => any;
    getCurrentTracks: () => TrackBaseInfo[];
    addMergeTrack: (mergeOpt: TrackMergeOptions[], jobId?: string) => any;
    release: () => any;
}
export declare class Merger {
    private width;
    private height;
    private jobId?;
    private videoTrackInfo;
    private audioTrackInfo;
    private layoutLevel;
    private layout;
    constructor(width: number, height: number, controller: MergerSessionController, jobId?: string);
    private initLayout;
    private updateLayoutLevel;
    private setLevelLayoutStream;
    private sendMergeOpt;
    handleRemoveVideoTrack(track: TrackBaseInfo): void;
    handleAddVideoTrack(track: TrackBaseInfo): void;
    release(): void;
}