import { AgoraObservable } from 'agora-foundation/lib/utilities/observable';
import { ILocalVideoTrack, ILocalAudioTrack } from 'agora-rtc-sdk-ng';
import { AgoraRtcVideoCanvas } from '../../../../core/rtc';
import { AgoraRtcScreenCaptureParams } from '../../../../core/rtc/type';
import { AgoraRtcVideoEffectContext, AgoraRtcAudioEffectContext } from '../struct';
import { AgoraRtcLocalTrackEventsObserver } from '../type';
import { AgoraRteScreenCaptureParams } from '../../../../core/media/type';
export declare class AgoraRtcScreenControl {
    private _sourceId;
    private _localTrackObservable;
    private _captureParamsPreset?;
    private static readonly _DEFAULT_TRACK_KEY_;
    protected logger: import("agora-foundation/lib/logger").Logger;
    private _videoTracks;
    private _audioTracks;
    private _videoCanvases;
    private _videoDeviceContxt;
    private _audioDeviceContxt;
    private _volume?;
    constructor(_sourceId: string, _localTrackObservable: AgoraObservable<AgoraRtcLocalTrackEventsObserver>, _captureParamsPreset?: AgoraRteScreenCaptureParams | undefined);
    get videoTrack(): ILocalVideoTrack | undefined;
    get audioTrack(): ILocalAudioTrack | undefined;
    get sourceId(): string;
    get videoDeviceContext(): AgoraRtcVideoEffectContext;
    get audioDeviceContext(): AgoraRtcAudioEffectContext;
    release(): number;
    setVolume(volume: number): void;
    start(params: AgoraRtcScreenCaptureParams): void;
    stop(): void;
    takeSnapshot(): ImageData;
    addVideoCanvas(canvas: AgoraRtcVideoCanvas): void;
    removeVideoCanvas(canvas: AgoraRtcVideoCanvas): void;
    private _getRenderMode;
}