/// <reference types="node" />
import { BitQueue, LRUCache } from '../utils';
import { DvcEncryption } from './telnet';
export declare enum Command2 {
    MOUSE_MOVE = 208,
    BUTTON_PRESS = 209,
    BUTTON_RELEASE = 210,
    BUTTON_CLICK = 211,
    BYTE = 212,
    SET_MODE = 213,
    ENCRYPT = 192
}
export declare enum MessageChannel {
    STATUS_FIELD_3 = 1,
    STATUS_FIELD_4 = 2,
    CONSOLE = 3,
    REPLACE_SCREEN = 4
}
export declare enum State {
    RESET = 0,
    BEGIN = 1,
    PIXEL_BEGIN = 2,
    PIXCODE_1 = 3,
    PIXCODE_0 = 4,
    PIXCODE_1B = 5,
    PIXCODE_2B = 6,
    PIXCODE_3B = 7,
    SET_GRAYSCALE = 8,
    SET_RED = 9,
    AFTER_COLOR = 10,
    PIXEL_FILL = 11,
    PIXEL_FILL2 = 12,
    PIXEL_FILL_PLUS8 = 13,
    PIXEL_FILL_N = 14,
    OTHER = 15,
    OTHER1 = 16,
    SET_POSITION = 17,
    OTHER2 = 18,
    SET_X = 19,
    SET_X_RELATIVE = 20,
    SET_X_ABSOLUTE = 21,
    ADVANCE_BLOCKS = 22,
    OTHER3 = 23,
    COMMAND_READ = 24,
    OTHER4 = 25,
    SET_WIDTH = 26,
    N_27 = 27,
    ADVANCE_BLOCKS2 = 28,
    ADVANCE_BLOCKS_PLUS2 = 29,
    ADVANCE_BLOCKS_N = 30,
    PIXCODE_OR_RGB = 31,
    PIXCODE_4B = 32,
    PIXEL_FILL_1 = 33,
    ADVANCE_BLOCKS_1 = 34,
    BEGIN_RGB = 36,
    N_37 = 37,
    FATAL_ERROR = 38,
    SET_POSITION_Y = 39,
    SET_HEIGHT = 40,
    SET_GREEN = 41,
    SET_BLUE = 42,
    RESYNCING = 43,
    STRING_START = 44,
    STRING_READ = 45,
    COMMAND_MORE = 46,
    SET_YCLIPPED = 47
}
interface StateData {
    bits: number;
    next: State;
    next0?: State;
}
export declare const STATE_DATA: {
    [state: number]: StateData;
};
/**
 * Video decoder state machine. Process incoming bitstream and
 * reconstructs screen blocks, etc. generating events that are
 * dispatched to the appropriate methods.
 *
 * To use this, subclass and implement all methods after
 * the "Methods for subclasses to implement" marker at the end.
 */
export declare class DvcDecoder {
    debug: boolean;
    byteCount: number;
    readonly bitQueue: BitQueue;
    dvc_zero_count: number;
    fatal_count: number;
    timeout_count: number;
    dvc_decoder_state: State;
    dvc_next_state: State;
    video_detected: boolean;
    size: [number, number];
    position: [number, number];
    dvc_newx: number;
    bitsPerColor: number;
    dvc_pixcode: number;
    dvc_last_color: number;
    currentColor: [number, number, number];
    cache: LRUCache;
    block: Uint32Array;
    blockWidth: number;
    blockHeight: number;
    dvc_pixel_count: number;
    currentCommand: number[];
    currentString?: {
        channel: MessageChannel;
        data: string;
    };
    protected initQueue(): void;
    init(): void;
    constructor();
    protected consumeBits(byte: number): void;
    /** Main method: iteration of the state machine. Returns `true` to stop */
    protected processBits(): true | undefined;
    /**
     * Process a received command
     * @param command command bytes (minimum length 1)
     */
    protected processCommand(commandBuffer: Buffer): void;
    protected setPixcodeFromCacheEntries(): void;
    protected setBitsPerColor(arg: number): void;
    protected getBitsToRead(n: number): number;
    protected addPixel(): true | undefined;
    protected next_block(nblocks: number): void;
    process(byte: number): void;
    get ok(): boolean;
    protected setVideoDecryption(cipher: DvcEncryption): void;
    protected setFramerate(n: number): void;
    protected setPowerStatus(hasPower: boolean): void;
    protected setInfo(licensed: number, flags: number): void;
    protected setTsType(t: number): void;
    protected printString(channel: MessageChannel, data: string): void;
    protected noVideo(): void;
    protected seize(): void;
    protected ping(): void;
    protected requestResync(): void;
    protected exitDvc(): void;
    protected setScreenDimensions(x: number, y: number): void;
    protected renderBlock(block: Uint32Array, x: number, y: number, width: number, height: number): void;
    protected clearScreen(): void;
    protected repaintScreen(): void;
    protected invalidateScreen(): void;
}
export default DvcDecoder;