import { AddressBus } from '../memory/address-bus';
import { TILE_MAP, TILE_AREA } from './ppu';
export declare const SCREEN_WIDTH = 160;
export declare const SCREEN_HEIGHT = 144;
export declare class Display {
    private addressBus?;
    private buffers;
    private currentBuffer;
    private currentMode;
    private currentLine;
    private clock;
    private lcdControl;
    private lcdPalettes;
    private lcdPositions;
    private lcdEnablingDelay;
    private cgbBackgroundPalettes;
    private cgbSpritePalettes;
    constructor();
    setAddressBus(addressBus: AddressBus): void;
    reset(): void;
    getFrontBuffer(): Uint8Array;
    getBackBuffer(): Uint8Array;
    tick(): void;
    setLcdControl(lcdControl: ILCDControl): void;
    getLcdControl(): ILCDControl;
    setLcdPalettes(lcdPalettes: ILCDPalettes): void;
    getLcdPalettes(): ILCDPalettes;
    setLcdPositions(lcdPositions: ILCDPositions): void;
    getLcdPosition(): ILCDPositions;
    getCgbBackgroundPalettes(): number[];
    getCgbSpritePalettes(): number[];
    private switchBuffers();
    private clearBuffer(bufferIndex);
    private setMode(mode);
    private setCurrentLine(line);
}
export declare enum GPU_MODE {
    HBLANK = 0,
    VBLANK = 1,
    OAM_SEARCH = 2,
    PIXEL_TRANSFER = 3,
}
export declare type LCDPalette = [number, number, number, number];
export interface ILCDPalettes {
    backgroundPalette: LCDPalette;
    spritePalette0: LCDPalette;
    spritePalette1: LCDPalette;
}
export interface ILCDPositions {
    backgroundScrollY: number;
    backgroundScrollX: number;
    windowPositionY: number;
    windowPositionX: number;
}
export interface ILCDControl {
    backgroundEnabled: boolean;
    spritesEnabled: boolean;
    spritesHeight: number;
    backgroundTileMap: TILE_MAP;
    backgroundTileArea: TILE_AREA;
    windowEnabled: boolean;
    windowTileMap: TILE_MAP;
    lcdEnabled: boolean;
}