import { AgoraRteReturnCode } from '../../constant';
import { AgoraObservable, AgoraRteRenderView } from '../../imports';
import { AgoraRteAudioRawDataConfig, AgoraRteVideoRenderMode } from '../media/type';
import { AgoraRtcChannelClient } from '../rtc';
import { AgoraRteStreamLayer } from '../../type';
import { AgoraRteSnapshotInfo, AgoraRteStreamPlayerObserver } from './type';
export declare class AgoraRteStreamPlayer {
    protected logger: import("agora-foundation/lib/logger/type").Logger;
    protected readonly observable: AgoraObservable<AgoraRteStreamPlayerObserver>;
    /**
     * 记录每个 streamId 最近一次订阅的层（high/low 等枚举值）
     */
    private _streamLayerMap;
    /**
     * 订阅层变更的延迟回调时间，默认 100 ms
     */
    private _layerUpdateDebounceMs;
    /**
     * 层更新定时器
     */
    private _layerUpdateTimer;
    private _rtcChannel;
    constructor(rtcChannel: AgoraRtcChannelClient);
    private _addRemoteStreamObserver;
    /**
     * 按层订阅远端视频流
     * @param streamId 流ID
     * @param streamLayer 目标层级（low/high，可多次调用叠加）
     * @version 3.10.0
     */
    subscribeRemoteVideoStream(streamId: string, streamLayer: AgoraRteStreamLayer): number;
    /**
     * 停止订阅远端视频流
     * @param streamId 流ID
     */
    unsubscribeRemoteVideoStream(streamId: string): number;
    /**
     * Render the video of the remote user on the canvas.
     * After receiving the video data of the remote user, you can render the video on the canvas.
     * @param streamId
     * @param streamType
     * @param renderMode
     * @param isMirror
     * @param view
     */
    startRenderRemoteVideoStream(streamId: string, renderMode: AgoraRteVideoRenderMode, isMirror: boolean, view: AgoraRteRenderView): number;
    /**
     * Stop rendering the video of the remote user on the canvas.
     * @param streamId
     * @param view
     */
    stopRenderRemoteVideoStream(streamId: string, view: AgoraRteRenderView): number;
    /**
     * Subscribe to a remote audio stream, you will start receiving the audio data of this stream and play the audio.
     * @param streamId
     */
    startPlayRemoteAudioStream(streamId: string): number;
    /**
     * Unsubscribe from a remote audio stream, you will stop receiving the audio data of this stream.
     * @param streamId
     */
    stopPlayRemoteAudioStream(streamId: string): number;
    setAudioRawDataConfig(config: AgoraRteAudioRawDataConfig): AgoraRteReturnCode;
    /**
     * Set the volume of the remote audio stream.
     * @param streamId
     * @param volume
     */
    adjustRemoteAudioStreamVolume(streamId: string, volume: number): number;
    takeSnapshot(streamId: string, filePath: string): Promise<AgoraRteSnapshotInfo>;
    addObserver(observer: AgoraRteStreamPlayerObserver): void;
    removeObserver(observer: AgoraRteStreamPlayerObserver): void;
    /**
     * 重新同步当前订阅层级信息（用于掉线重连后通知后端）
     */
    resyncStreamLayers(): void;
    /**
     * 启动层事件防抖定时器: 检查定时器状态，若未启动则立即启动 `layerUpdateDebounceMs` 定时器
     */
    private _startLayerEventTimer;
    /**
     * flush 定时器事件: 抛出 streamLayerMap 的当前快照, 并清除定时器
     */
    private _flushLayerEvents;
}