import { VideoMirrorModeType } from '../Private/AgoraBase';
import { RenderModeType, VideoSourceType } from '../Private/AgoraMediaBase';
import { RendererCacheContext, RendererCacheType, RendererContext, RendererType } from '../Types';
import { IRenderer } from './IRenderer';
/**
 * @ignore
 */
export declare class RendererManager {
    /**
     * @ignore
     */
    renderingFps: number;
    /**
     * @ignore
     */
    private _rendererCaches;
    /**
     * @ignore
     */
    private _context;
    /**
     * @ignore
     */
    private rendererType;
    /**
     * Currently, the remote video frame is observed in the pre-renderer position and you can not change it.
     * the local video frame is observed in the pre-encoder position by default, and you can change it.
     * @ignore
     */
    private defaultObservedFramePosition;
    constructor();
    setRenderingFps(fps: number): void;
    set defaultChannelId(channelId: string);
    get defaultChannelId(): string;
    get defaultRenderMode(): RenderModeType;
    get defaultMirrorMode(): VideoMirrorModeType;
    release(): void;
    private presetRendererContext;
    addOrRemoveRenderer(context: RendererContext): RendererCacheType | undefined;
    private addRendererToCache;
    removeRendererFromCache(context: RendererContext): void;
    clearRendererCache(): void;
    getRendererCache(context: RendererContext): RendererCacheType | undefined;
    getRendererCachesBySourceType(sourceType: VideoSourceType): RendererCacheType[];
    getRendererCaches(): RendererCacheType[];
    getRenderers(context: RendererContext): IRenderer[];
    findRenderer(view: Element): IRenderer | undefined;
    protected createRenderer(context: RendererContext, rendererType?: RendererType): IRenderer;
    private handleWebGLFallback;
    handleWebCodecsFallback(context: RendererCacheContext): void;
    setRendererContext(context: RendererContext): boolean;
}
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