import type { RemoteDesktopQuality, ScreenInfo, CaptureFrame } from "./types.js";

export declare function getSharpLoadStatus(): string;

export declare function extractRawRegion(raw: Buffer, srcWidth: number, left: number, top: number, w: number, h: number): Buffer | null;
export declare class ScreenCapture {
    
    private static readonly ACTIVE_INTERVAL_MS;
    
    private static readonly STILL_FRAME_COUNT;
    
    private static readonly IDLE_INTERVAL_MS;
    
    private static readonly PERIODIC_FULL_FRAME_INTERVAL_MS;
    private screens;
    
    private captureTimer;
    
    private fps;
    
    private quality;
    private activeScreenId;
    
    private onFrame;
    
    private captureInFlight;
    
    private encodePending;
    
    private encoding;
    
    private consecutiveStillFrames;
    
    private inputBoostFrames;
    
    private lastRaw;
    private lastRawWidth;
    private lastRawHeight;
    
    private pendingReference;
    frameStats: {
        full: number;
        partial: number;
        null: number;
        sharpFail: number;
    };
    
    resetFrameStats(): void;
    listScreens(): Promise<ScreenInfo[]>;
    
    private cachedMonitors;
    private getActiveMonitor;
    
    private acquireShot;
    
    private encodeShot;
    
    captureVirtualDesktop(force?: boolean): Promise<CaptureFrame | null>;
    
    private totalTileCount;
    
    private mapLimit;
    
    private outputRectToSource;
    
    private detectChangedTiles;
    
    private commitReferenceFrame;
    
    private discardReferenceFrame;
    
    setActiveScreen(screenId: string | null): void;
    
    startLoop(onFrame: (frame: CaptureFrame) => boolean | void): void;
    
    private scheduleLoop;
    
    private lastFullFrameAt;
    
    private captureOnce;
    
    private drainEncode;
    
    private consecutiveNullCaptures;
    
    private captureSafeFullFrame;
    
    private currentIntervalMs;
    
    requestFrame(): void;
    
    private backpressureThrottleUntil;
    
    notifyFrameDropped(): void;
    
    requestFullFrame(): void;
    stopLoop(): void;
    
    setQuality(quality?: RemoteDesktopQuality, fps?: number): void;
    getQuality(): RemoteDesktopQuality;
    getScreens(): ScreenInfo[];
}