import { VideoFrame } from '../Private/AgoraMediaBase';
import { RendererContext } from '../Types';
import { IRenderer } from './IRenderer';
import { IRendererCache } from './IRendererCache';
export declare class RendererCache extends IRendererCache {
    private videoFrame;
    private _enabled;
    private _renderingFps;
    private _renderingTimer?;
    private _isRendering;
    private _lastRenderTime;
    private _frameTimes;
    private _frameIntervals;
    private _lastFrameTimestamp;
    private _statsInterval;
    constructor(context: RendererContext);
    /**
     * @deprecated Use videoFrame instead
     */
    get shareVideoFrame(): VideoFrame | undefined;
    private enable;
    private disable;
    private shouldEnable;
    draw(): void;
    fetchVideoFrame(): {
        hasMoreFrame: boolean;
        needRender: boolean;
    };
    addRenderer(renderer: IRenderer): void;
    /**
     * 渲染当前视频帧
     * 此方法假设已经通过fetchVideoFrame获取了新帧
     */
    renderFrame(): void;
    /**
     * 输出性能统计信息
     * 包括帧时间和帧间隔的统计数据
     */
    private _outputPerformanceStats;
    /**
     * 开始独立渲染循环
     */
    startRendering(): void;
    /**
     * Remove the specified renderer if it is specified, otherwise remove all renderers
     */
    removeRenderer(renderer?: IRenderer): void;
    stopRendering(): void;
    release(): void;
}
//# sourceMappingURL=RendererCache.d.ts.map