import type { IAgoraRTCClient, IAgoraRTCRemoteUser } from 'agora-rtc-sdk-ng';
import { AgoraRtcVideoCanvas } from '../../../core/rtc';
import { AgoraRtcChannelClientObserver } from '../../../core/rtc/type';
import { AgoraObservable } from 'agora-foundation/lib/utilities/observable';
import { Logger } from '../../../imports';
export declare class AgoraRtcRemoteTrackControl {
    private _client;
    private _channelObservable;
    private _videoSubscribeMap;
    private _audioSubscribeMap;
    private _id;
    private _speakerDeviceId?;
    private _streamVolume?;
    protected logger: Logger;
    private _isProcessing;
    private _user?;
    private _videoTrack?;
    private _audioTrack?;
    private _isUserVideoPublished;
    private _isUserAudioPublished;
    private _isFirstFrameTriggered;
    private _defaultView;
    constructor(_client: IAgoraRTCClient, _channelObservable: AgoraObservable<AgoraRtcChannelClientObserver>, _videoSubscribeMap: Map<string, boolean>, _audioSubscribeMap: Map<string, boolean>, _id: string, _speakerDeviceId?: string | undefined, _streamVolume?: number | undefined);
    get id(): string;
    setRemoteUser(user: IAgoraRTCRemoteUser | undefined): void;
    setVideoPublishState(published: boolean): void;
    setAudioPublishState(published: boolean): void;
    subscribe(trackType: 'video' | 'audio'): void;
    unsubscribe(trackType: 'video' | 'audio'): void;
    addVideoCanvas(canvas: AgoraRtcVideoCanvas): void;
    removeVideoCanvas(canvas: AgoraRtcVideoCanvas): void;
    takeSnapshot(): ImageData;
    setSpeakerDevice(deviceId: string): void;
    setVolume(volume: number): void;
    notifyAudioVolumeChange(): void;
    private get _isVideoSubscribed();
    private get _isAudioSubscribed();
    private get _isToSubscribeVideo();
    private get _isToSubscribeAudio();
    private set _isToSubscribeVideo(value);
    private set _isToSubscribeAudio(value);
    private _isStateStale;
    private _getRenderMode;
    private _playTrack;
    private _stopTrack;
    private _handleFirstFrame;
    private _triggerFirstFrameEvent;
    private _syncState;
}