/*++
RioGamepadXP — shared definitions for the Windows XP virtual HID gamepad driver
and its user-mode client (the RIOJoy net40 tray app's HID feeder).

This is the XP-flavor sibling of driver/RioGamepad/Public.h. The contract is
IDENTICAL — same interface GUID, same IOCTL_RIO_SUBMIT_REPORT, same 25-byte
report layout, same VID/PID — so RioJoy.Core's HidFeederJoystickSink drives
either driver with only the device-open path differing.

The one XP difference: XP-era hidclass minidrivers cannot register a device
interface on a bare control device (IoRegisterDeviceInterface needs a PDO), so
the sideband control device is reachable by a fixed symbolic-link name instead
of by interface GUID. The net40 feeder opens RIO_XP_USERMODE_PATH directly; the
net48 feeder keeps using SetupDi + GUID_DEVINTERFACE_RIOGAMEPAD.

The input report is fixed-size and has no report ID:
    bytes  0..11  : 6 axes (X,Y,Z,Rx,Ry,Rz), each unsigned 16-bit little-endian
    byte   12     : low nibble = hat (0..3; 0x0F = centered/null), high nibble pad
    bytes  13..24 : 96 button bits (button N at byte 13 + (N-1)/8, bit (N-1)%8)
--*/

#pragma once

//
// Device interface GUID (same as the modern driver; kept for parity, and used
// if a future XP build ever exposes an interface). {b6a3f1c2-...}
//
DEFINE_GUID(GUID_DEVINTERFACE_RIOGAMEPAD,
    0xb6a3f1c2, 0x7e84, 0x4d2a, 0x9c, 0x1f, 0x2a, 0x5e, 0x8d, 0x3b, 0x60, 0x71);

//
// Custom IOCTL: submit one input report (input buffer = RIO_REPORT_SIZE bytes).
// Identical code to the modern driver.
//
#define IOCTL_RIO_SUBMIT_REPORT \
    CTL_CODE(FILE_DEVICE_UNKNOWN, 0x800, METHOD_BUFFERED, FILE_WRITE_ACCESS)

//
// HID input report size in bytes: 6*2 (axes) + 1 (hat+pad) + 12 (96 buttons).
//
#define RIO_REPORT_SIZE 25

//
// Virtual device identity (matches the modern driver).
//
#define RIO_VENDOR_ID   0x1209  // pid.codes test/community VID
#define RIO_PRODUCT_ID  0x5249  // 'R','I'
#define RIO_VERSION     0x0100

//
// Sideband control-device names. The kernel object and its DOS-device symlink;
// the user-mode client opens RIO_XP_USERMODE_PATH.
//
#define RIO_XP_DEVICE_NAME   L"\\Device\\RioGamepadXP"
#define RIO_XP_SYMLINK_NAME  L"\\DosDevices\\RioGamepadXP"
#define RIO_XP_USERMODE_PATH "\\\\.\\RioGamepadXP"