import { IRtcEngineExImpl } from '../impl/IAgoraRtcEngineExImpl';
import { ChannelMediaOptions, DirectCdnStreamingMediaOptions, IDirectCdnStreamingEventHandler, IMetadataObserver, IRtcEngineEventHandler, IVideoDeviceManager, LeaveChannelOptions, MetadataType, RtcEngineContext, SDKBuildInfo } from '../IAgoraRtcEngine';
import { IMediaPlayer } from '../IAgoraMediaPlayer';
import { AudioEncodedFrameObserverConfig, AudioRecordingConfiguration, ClientRoleOptions, ClientRoleType, DataStreamConfig, IAudioEncodedFrameObserver, SimulcastStreamConfig, VideoSourceType, WatermarkOptions } from '../AgoraBase';
import { IAudioSpectrumObserver } from '../AgoraMediaBase';
import { RtcConnection } from '../IAgoraRtcEngineEx';
import { IAudioDeviceManager } from '../IAudioDeviceManager';
import { IMediaEngine } from '../IAgoraMediaEngine';
import { IMediaRecorder } from '../IAgoraMediaRecorder';
import { ILocalSpatialAudioEngine } from '../IAgoraSpatialAudio';
export declare class RtcEngineExInternal extends IRtcEngineExImpl {
    static _handlers: (IRtcEngineEventHandler | IDirectCdnStreamingEventHandler | IMetadataObserver)[];
    static _audio_encoded_frame_observers: IAudioEncodedFrameObserver[];
    static _audio_spectrum_observers: IAudioSpectrumObserver[];
    private _media_engine;
    private _media_recorder;
    private _local_spatial_audio_engine;
    initialize(context: RtcEngineContext): number;
    release(sync?: boolean): void;
    getVersion(): SDKBuildInfo;
    registerEventHandler(eventHandler: IRtcEngineEventHandler): boolean;
    unregisterEventHandler(eventHandler: IRtcEngineEventHandler): boolean;
    createMediaPlayer(): IMediaPlayer;
    destroyMediaPlayer(mediaPlayer: IMediaPlayer): number;
    startDirectCdnStreaming(eventHandler: IDirectCdnStreamingEventHandler, publishUrl: string, options: DirectCdnStreamingMediaOptions): number;
    registerMediaMetadataObserver(observer: IMetadataObserver, type: MetadataType): number;
    unregisterMediaMetadataObserver(observer: IMetadataObserver, type: MetadataType): number;
    protected getApiTypeFromJoinChannel(token: string, channelId: string, uid: number, options?: ChannelMediaOptions): string;
    protected getApiTypeFromLeaveChannel(options?: LeaveChannelOptions): string;
    protected getApiTypeFromSetClientRole(role: ClientRoleType, options?: ClientRoleOptions): string;
    protected getApiTypeFromStartEchoTest(intervalInSeconds?: number): string;
    protected getApiTypeFromStartPreview(sourceType?: VideoSourceType): string;
    protected getApiTypeFromStopPreview(sourceType?: VideoSourceType): string;
    protected getApiTypeFromStartAudioRecording(config: AudioRecordingConfiguration): string;
    protected getApiTypeFromStartAudioMixing(filePath: string, loopback: boolean, cycle: number, startPos?: number): string;
    protected getApiTypeFromEnableDualStreamMode(enabled: boolean, sourceType?: VideoSourceType, streamConfig?: SimulcastStreamConfig): string;
    protected getApiTypeFromCreateDataStream(config: DataStreamConfig): string;
    protected getApiTypeFromAddVideoWatermark(watermarkUrl: string, options: WatermarkOptions): string;
    protected getApiTypeFromJoinChannelWithUserAccount(token: string, channelId: string, userAccount: string, options?: ChannelMediaOptions): string;
    protected getApiTypeFromCreateDataStreamEx(config: DataStreamConfig, connection: RtcConnection): string;
    getAudioDeviceManager(): IAudioDeviceManager;
    getVideoDeviceManager(): IVideoDeviceManager;
    getMediaEngine(): IMediaEngine;
    getMediaRecorder(): IMediaRecorder;
    getLocalSpatialAudioEngine(): ILocalSpatialAudioEngine;
    registerAudioEncodedFrameObserver(config: AudioEncodedFrameObserverConfig, observer: IAudioEncodedFrameObserver): number;
    unregisterAudioEncodedFrameObserver(observer: IAudioEncodedFrameObserver): number;
    registerAudioSpectrumObserver(observer: IAudioSpectrumObserver): number;
    unregisterAudioSpectrumObserver(observer: IAudioSpectrumObserver): number;
}