author Sam Lantinga <>
Thu, 17 Oct 2013 23:40:13 -0700
changeset 7831 214cd9137ea9
parent 7686 adacc93b5213
child 8093 b43765095a6f
permissions -rw-r--r--
Fixed bug 2069 - Device addition/removal queries all USB devices rather than only HID devices. Andreas Ertelt SDL_dxjoystick.c is setting the classguid for device (dis)connect events to USB Devices in general: dbh.dbcc_classguid = GUID_DEVINTERFACE_USB_DEVICE; Wouldn't it make more sense to have it just subscribe to Hid device events? This would mean less meaningless events reaching the application.

  Simple DirectMedia Layer
  Copyright (C) 1997-2013 Sam Lantinga <>

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  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

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  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.
#include "SDL_config.h"


/* DirectInput joystick driver; written by Glenn Maynard, based on Andrei de
 * A. Formiga's WINMM driver.
 * Hats and sliders are completely untested; the app I'm writing this for mostly
 * doesn't use them and I don't own any joysticks with them.
 * We don't bother to use event notification here.  It doesn't seem to work
 * with polled devices, and it's fine to call IDirectInputDevice2_GetDeviceData and
 * let it return 0 events. */

#include "../../core/windows/SDL_windows.h"

#define DIRECTINPUT_VERSION 0x0800      /* Need version 7 for force feedback. Need version 8 so IDirectInput8_EnumDevices doesn't leak like a sieve... */
#include <dinput.h>
#include <wbemcli.h>
#include <oleauto.h>
#include <xinput.h>
#include <devguid.h>
#include <dbt.h>

#define XUSER_INDEX_ANY     0x000000FF

/* typedef's for XInput structs we use */
typedef struct
    WORD wButtons;
    BYTE bLeftTrigger;
    BYTE bRightTrigger;
    SHORT sThumbLX;
    SHORT sThumbLY;
    SHORT sThumbRX;
    SHORT sThumbRY;
    DWORD dwPaddingReserved;

typedef struct
    DWORD dwPacketNumber;

/* Forward decl's for XInput API's we load dynamically and use if available */
typedef DWORD (WINAPI *XInputGetState_t)
    DWORD         dwUserIndex,  /* [in] Index of the gamer associated with the device */
    XINPUT_STATE_EX* pState     /* [out] Receives the current state */

typedef DWORD (WINAPI *XInputSetState_t)
    DWORD             dwUserIndex,  /* [in] Index of the gamer associated with the device */
    XINPUT_VIBRATION* pVibration    /* [in, out] The vibration information to send to the controller */

typedef DWORD (WINAPI *XInputGetCapabilities_t)
    DWORD                dwUserIndex,   /* [in] Index of the gamer associated with the device */
    DWORD                dwFlags,       /* [in] Input flags that identify the device type */
    XINPUT_CAPABILITIES* pCapabilities  /* [out] Receives the capabilities */

extern int WIN_LoadXInputDLL(void);
extern void WIN_UnloadXInputDLL(void);

extern XInputGetState_t SDL_XInputGetState;
extern XInputSetState_t SDL_XInputSetState;
extern XInputGetCapabilities_t SDL_XInputGetCapabilities;
extern DWORD SDL_XInputVersion;  /* ((major << 16) & 0xFF00) | (minor & 0xFF) */

#define XINPUTGETSTATE          SDL_XInputGetState
#define XINPUTSETSTATE          SDL_XInputSetState
#define XINPUTGETCAPABILITIES   SDL_XInputGetCapabilities

#define MAX_INPUTS  256     /* each joystick can have up to 256 inputs */

/* local types */
typedef enum Type

typedef struct input_t
    /* DirectInput offset for this input type: */
    DWORD ofs;

    /* Button, axis or hat: */
    Type type;

    /* SDL input offset: */
    Uint8 num;
} input_t;

/* The private structure used to keep track of a joystick */
struct joystick_hwdata
    DIDEVCAPS Capabilities;
    int buffered;
    SDL_JoystickGUID guid;

    input_t Inputs[MAX_INPUTS];
    int NumInputs;
    int NumSliders;
    Uint8 removed;
    Uint8 send_remove_event;
    Uint8 bXInputDevice; /* 1 if this device supports using the xinput API rather than DirectInput */
    Uint8 bXInputHaptic; /* Supports force feedback via XInput. */
    Uint8 userid; /* XInput userid index for this joystick */
    Uint8 currentXInputSlot; /* the current position to write to in XInputState below, used so we can compare old and new values */
    XINPUT_STATE_EX XInputState[2];