/// <reference types="node" />
export declare enum ScsiCommand {
    FORMAT_UNIT = 4,
    INQUIRY = 18,
    MODE_SELECT_6 = 21,
    MODE_SELECT = 85,
    MODE_SENSE_6 = 26,
    MODE_SENSE = 90,
    PA_MEDIA_REMOVAL = 30,
    READ_10 = 40,
    READ_12 = 168,
    READ_CAPACITY = 37,
    READ_CAPACITIES = 35,
    REQUEST_SENSE = 3,
    REZERO_UNIT = 1,
    SEEK = 43,
    SEND_DIAGNOSTIC = 29,
    START_STOP_UNIT = 27,
    TEST_UNIT_READY = 0,
    VERIFY = 47,
    WRITE_10 = 42,
    WRITE_12 = 170,
    WRITE_VERIFY = 46,
    READ_CD = 190,
    READ_CD_MSF = 185,
    READ_HEADER = 68,
    READ_SUBCHANNEL = 66,
    READ_TOC = 67,
    STOP_PLAY_SCAN = 78,
    MECHANISM_STATUS = 189,
    GET_EVENT_STATUS = 74
}
declare enum FddState {
    MEDIA_NOT_PRESENT = 0,
    MEDIA_CHANGED = 1,
    DEVICE_READY = 2
}
export declare class VirtualDevice {
    keepaliveTime: number;
    fdd_state: FddState;
    event_state: number;
    protected processCommand(buf: Buffer): Promise<boolean>;
    protected handleSendDiagnostics(): void;
    protected handleRead(buf: Buffer): Promise<void>;
    protected handlePaMediaRemoval(buf: Buffer): void;
    protected handleStartStopUnit(buf: Buffer): boolean;
    protected handleTestUnitReady(): void;
    protected handleReadCapacity(): Promise<void>;
    protected handleReadToc(buf: Buffer): Promise<void>;
    protected handleModeSense(buf: Buffer): void;
    protected handleGetEventStatus(buf: Buffer): void;
    protected media: number;
    protected senseKey: number;
    protected asc: number;
    protected ascq: number;
    protected sendCommand(senseKey: number, asc: number, ascq: number, payload?: Buffer): void;
    protected keepaliveTimeout?: NodeJS.Timeout;
    protected resetKeepaliveTimeout(): void;
    protected cmdQueue: Buffer;
    receive(chunk: Buffer): Promise<void>;
    sendDisconnect(): void;
    protected send(data: Buffer): void;
    protected mediaIsPresent(): boolean;
    /** returns current device size in bytes */
    protected mediaSize(): Promise<number>;
    /**
     * positioned read of `buffer.length` bytes on device.
     * `pos` is in bytes. data must be placed at the buffer.
     * if the position is out of bounds, return true
     */
    protected mediaRead(buffer: Buffer, pos: number): Promise<boolean>;
    protected notifyMediaEject(): void;
    protected notifyMediaRemoval(prevented: boolean): void;
}
export default VirtualDevice;