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// Copyright 2005-2019 The Mumble Developers. All rights reserved.
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file at the root of the
// Mumble source tree or at <https://www.mumble.info/LICENSE>.
#ifndef MUMBLE_MUMBLE_XBOXINPUT_H_
#define MUMBLE_MUMBLE_XBOXINPUT_H_
#include <windows.h>
#include <stdint.h>
#include <QUuid>
/// XBOXINPUT_MAX_DEVICES defines the maximum
/// number of devices that can be connected
/// to the system at once.
///
/// In typical operation, one calls GetState()
/// in a loop bounded by XBOXINPUT_MAX_DEVICES.
#define XBOXINPUT_MAX_DEVICES 4
/// XBOXINPUT_TRIGGER_THRESHOLD defines the thresold
/// that an analog trigger (leftTrigger and
/// rightTrigger of XboxInputState) must have exceeded
/// in order to count as a button press.
#define XBOXINPUT_TRIGGER_THRESHOLD 30
/// XboxInputState represents the state of an
/// Xbox controller as returned by GetState().
struct XboxInputState {
uint32_t packetNumber;
uint16_t buttons;
uint8_t leftTrigger;
uint8_t rightTrigger;
uint16_t leftThumbX;
uint16_t leftThumbY;
uint16_t rightThumbY;
uint16_t rightThumbX;
uint32_t paddingReserved; // Required for XInputGetStateEx. Not required for XInputGetState.
};
typedef uint32_t (WINAPI *XboxInputGetStateFunc)(uint32_t deviceIndex, XboxInputState *state);
/// XboxInput is an XInput wrapper that dynamically loads an appropriate
/// xinput*.dll on construction and provides access to its GetState(Ex)
/// function.
class XboxInput {
public:
XboxInput();
virtual ~XboxInput();
/// s_XboxInputGuid is the GUID used by GlobalShortcut_win
/// to distinguish XboxInputLibrary's events from other event
/// soures.
static const QUuid s_XboxInputGuid;
/// isValid determines wheter the XboxInputLibrary
/// is usable.
bool isValid() const;
/// Query the state of the Xbox controller at deviceIndex.
/// If the function succeeds, it returns 0 (Windows's ERROR_SUCCESS).
/// If no device is connected, it returns 0x48F (Windows's ERROR_DEVICE_NOT_CONNECTED).
XboxInputGetStateFunc GetState;
protected:
/// m_getStateFunc represents XInputGetState from the XInput DLL.
XboxInputGetStateFunc m_getStateFunc;
/// m_getStateFuncEx represents XInputGetStateEx, which is optionally
/// available in the XInput DLL.
XboxInputGetStateFunc m_getStateExFunc;
/// m_xinputlib is the handle to the XInput DLL as returned by
/// LoadLibrary.
HMODULE m_xinputlib;
/// m_valid determines whether or not the XboxInputLibrary
/// is valid for use.
bool m_valid;
};
#endif
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