src/joystick/hidapi/SDL_hidapi_xbox360.c - third_party/sdl - Git at Google

 /*
   Simple DirectMedia Layer
   Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>

   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
   arising from the use of this software.

   Permission is granted to anyone to use this software for any purpose,
   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_internal.h"

 #ifdef SDL_JOYSTICK_HIDAPI

 #include "SDL_hints.h"
 #include "SDL_events.h"
 #include "SDL_timer.h"
 #include "SDL_joystick.h"
 #include "SDL_gamecontroller.h"
 #include "../SDL_sysjoystick.h"
 #include "SDL_hidapijoystick_c.h"
 #include "SDL_hidapi_rumble.h"


 #ifdef SDL_JOYSTICK_HIDAPI_XBOX360

 /* Define this if you want to log all packets from the controller */
 /*#define DEBUG_XBOX_PROTOCOL*/


 typedef struct {
     Uint8 last_state[USB_PACKET_LENGTH];
 } SDL_DriverXbox360_Context;

 static SDL_bool
 HIDAPI_DriverXbox360_IsSupportedDevice(const char *name, SDL_GameControllerType type, Uint16 vendor_id, Uint16 product_id, Uint16 version, int interface_number, int interface_class, int interface_subclass, int interface_protocol)
 {
     const int XB360W_IFACE_PROTOCOL = 129; /* Wireless */

     if (vendor_id == USB_VENDOR_NVIDIA) {
         /* This is the NVIDIA Shield controller which doesn't talk Xbox controller protocol */
         return SDL_FALSE;
     }
     if ((vendor_id == USB_VENDOR_MICROSOFT && (product_id == 0x0291 || product_id == 0x0719)) ||
         (type == SDL_CONTROLLER_TYPE_XBOX360 && interface_protocol == XB360W_IFACE_PROTOCOL)) {
         /* This is the wireless dongle, which talks a different protocol */
         return SDL_FALSE;
     }
     if (interface_number > 0) {
         /* This is the chatpad or other input interface, not the Xbox 360 interface */
         return SDL_FALSE;
     }
 #if defined(__MACOSX__) || defined(__WIN32__)
     if (vendor_id == USB_VENDOR_MICROSOFT && product_id == 0x028e && version == 1) {
         /* This is the Steam Virtual Gamepad, which isn't supported by this driver */
         return SDL_FALSE;
     }
 #endif
 #if defined(__MACOSX__)
     /* Wired Xbox One controllers are handled by this driver, interfacing with
        the 360Controller driver available from:
        https://github.com/360Controller/360Controller/releases

        Bluetooth Xbox One controllers are handled by the SDL Xbox One driver
     */
     if (SDL_IsJoystickBluetoothXboxOne(vendor_id, product_id)) {
         return SDL_FALSE;
     }
     return (type == SDL_CONTROLLER_TYPE_XBOX360 || type == SDL_CONTROLLER_TYPE_XBOXONE) ? SDL_TRUE : SDL_FALSE;
 #else
     return (type == SDL_CONTROLLER_TYPE_XBOX360) ? SDL_TRUE : SDL_FALSE;
 #endif
 }

 static const char *
 HIDAPI_DriverXbox360_GetDeviceName(Uint16 vendor_id, Uint16 product_id)
 {
     return NULL;
 }

 static SDL_bool SetSlotLED(hid_device *dev, Uint8 slot)
 {
     const SDL_bool blink = SDL_FALSE;
     Uint8 mode = (blink ? 0x02 : 0x06) + slot;
     Uint8 led_packet[] = { 0x01, 0x03, 0x00 };

     led_packet[2] = mode;
     if (hid_write(dev, led_packet, sizeof(led_packet)) != sizeof(led_packet)) {
         return SDL_FALSE;
     }
     return SDL_TRUE;
 }

 static SDL_bool
 HIDAPI_DriverXbox360_InitDevice(SDL_HIDAPI_Device *device)
 {
     return HIDAPI_JoystickConnected(device, NULL);
 }

 static int
 HIDAPI_DriverXbox360_GetDevicePlayerIndex(SDL_HIDAPI_Device *device, SDL_JoystickID instance_id)
 {
     return -1;
 }

 static void
 HIDAPI_DriverXbox360_SetDevicePlayerIndex(SDL_HIDAPI_Device *device, SDL_JoystickID instance_id, int player_index)
 {
     if (!device->dev) {
         return;
     }
     if (player_index >= 0) {
         SetSlotLED(device->dev, (player_index % 4));
     }
 }

 static SDL_bool
 HIDAPI_DriverXbox360_OpenJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
 {
     SDL_DriverXbox360_Context *ctx;
     int player_index;

     ctx = (SDL_DriverXbox360_Context *)SDL_calloc(1, sizeof(*ctx));
     if (!ctx) {
         SDL_OutOfMemory();
         return SDL_FALSE;
     }

     device->dev = hid_open_path(device->path, 0);
     if (!device->dev) {
         SDL_SetError("Couldn't open %s", device->path);
         SDL_free(ctx);
         return SDL_FALSE;
     }
     device->context = ctx;

     /* Set the controller LED */
     player_index = SDL_JoystickGetPlayerIndex(joystick);
     if (player_index >= 0) {
         SetSlotLED(device->dev, (player_index % 4));
     }

     /* Initialize the joystick capabilities */
     joystick->nbuttons = 15;
     joystick->naxes = SDL_CONTROLLER_AXIS_MAX;
     joystick->epowerlevel = SDL_JOYSTICK_POWER_WIRED;

     return SDL_TRUE;
 }

 static int
 HIDAPI_DriverXbox360_RumbleJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble)
 {
 #ifdef __MACOSX__
     if (SDL_IsJoystickBluetoothXboxOne(device->vendor_id, device->product_id)) {
         Uint8 rumble_packet[] = { 0x03, 0x0F, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0x00 };

         rumble_packet[4] = (low_frequency_rumble >> 8);
         rumble_packet[5] = (high_frequency_rumble >> 8);

         if (SDL_HIDAPI_SendRumble(device, rumble_packet, sizeof(rumble_packet)) != sizeof(rumble_packet)) {
             return SDL_SetError("Couldn't send rumble packet");
         }
     } else {
         /* On Mac OS X the 360Controller driver uses this short report,
            and we need to prefix it with a magic token so hidapi passes it through untouched
          */
         Uint8 rumble_packet[] = { 'M', 'A', 'G', 'I', 'C', '0', 0x00, 0x04, 0x00, 0x00 };

         rumble_packet[6+2] = (low_frequency_rumble >> 8);
         rumble_packet[6+3] = (high_frequency_rumble >> 8);

         if (SDL_HIDAPI_SendRumble(device, rumble_packet, sizeof(rumble_packet)) != sizeof(rumble_packet)) {
             return SDL_SetError("Couldn't send rumble packet");
         }
     }
 #else
     Uint8 rumble_packet[] = { 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

     rumble_packet[3] = (low_frequency_rumble >> 8);
     rumble_packet[4] = (high_frequency_rumble >> 8);

     if (SDL_HIDAPI_SendRumble(device, rumble_packet, sizeof(rumble_packet)) != sizeof(rumble_packet)) {
         return SDL_SetError("Couldn't send rumble packet");
     }
 #endif
     return 0;
 }

 static int
 HIDAPI_DriverXbox360_RumbleJoystickTriggers(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 left_rumble, Uint16 right_rumble)
 {
     return SDL_Unsupported();
 }

 static SDL_bool
 HIDAPI_DriverXbox360_HasJoystickLED(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
 {
     /* Doesn't have an RGB LED, so don't return true here */
     return SDL_FALSE;
 }

 static int
 HIDAPI_DriverXbox360_SetJoystickLED(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint8 red, Uint8 green, Uint8 blue)
 {
     return SDL_Unsupported();
 }

 static int
 HIDAPI_DriverXbox360_SetJoystickSensorsEnabled(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, SDL_bool enabled)
 {
     return SDL_Unsupported();
 }

 static void
 HIDAPI_DriverXbox360_HandleStatePacket(SDL_Joystick *joystick, SDL_DriverXbox360_Context *ctx, Uint8 *data, int size)
 {
     Sint16 axis;
 #ifdef __MACOSX__
     const SDL_bool invert_y_axes = SDL_FALSE;
 #else
     const SDL_bool invert_y_axes = SDL_TRUE;
 #endif

     if (ctx->last_state[2] != data[2]) {
         SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_UP, (data[2] & 0x01) ? SDL_PRESSED : SDL_RELEASED);
         SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_DOWN, (data[2] & 0x02) ? SDL_PRESSED : SDL_RELEASED);
         SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_LEFT, (data[2] & 0x04) ? SDL_PRESSED : SDL_RELEASED);
         SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_RIGHT, (data[2] & 0x08) ? SDL_PRESSED : SDL_RELEASED);
         SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_START, (data[2] & 0x10) ? SDL_PRESSED : SDL_RELEASED);
         SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_BACK, (data[2] & 0x20) ? SDL_PRESSED : SDL_RELEASED);
         SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_LEFTSTICK, (data[2] & 0x40) ? SDL_PRESSED : SDL_RELEASED);
         SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_RIGHTSTICK, (data[2] & 0x80) ? SDL_PRESSED : SDL_RELEASED);
     }

     if (ctx->last_state[3] != data[3]) {
         SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_LEFTSHOULDER, (data[3] & 0x01) ? SDL_PRESSED : SDL_RELEASED);
         SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_RIGHTSHOULDER, (data[3] & 0x02) ? SDL_PRESSED : SDL_RELEASED);
         SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_GUIDE, (data[3] & 0x04) ? SDL_PRESSED : SDL_RELEASED);
         SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_A, (data[3] & 0x10) ? SDL_PRESSED : SDL_RELEASED);
         SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_B, (data[3] & 0x20) ? SDL_PRESSED : SDL_RELEASED);
         SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_X, (data[3] & 0x40) ? SDL_PRESSED : SDL_RELEASED);
         SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_Y, (data[3] & 0x80) ? SDL_PRESSED : SDL_RELEASED);
     }

     axis = ((int)data[4] * 257) - 32768;
     SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_TRIGGERLEFT, axis);
     axis = ((int)data[5] * 257) - 32768;
     SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_TRIGGERRIGHT, axis);
     axis = *(Sint16*)(&data[6]);
     SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_LEFTX, axis);
     axis = *(Sint16*)(&data[8]);
     if (invert_y_axes) {
         axis = ~axis;
     }
     SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_LEFTY, axis);
     axis = *(Sint16*)(&data[10]);
     SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_RIGHTX, axis);
     axis = *(Sint16*)(&data[12]);
     if (invert_y_axes) {
         axis = ~axis;
     }
     SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_RIGHTY, axis);

     SDL_memcpy(ctx->last_state, data, SDL_min(size, sizeof(ctx->last_state)));
 }

 static SDL_bool
 HIDAPI_DriverXbox360_UpdateDevice(SDL_HIDAPI_Device *device)
 {
     SDL_DriverXbox360_Context *ctx = (SDL_DriverXbox360_Context *)device->context;
     SDL_Joystick *joystick = NULL;
     Uint8 data[USB_PACKET_LENGTH];
     int size = 0;

     if (device->num_joysticks > 0) {
         joystick = SDL_JoystickFromInstanceID(device->joysticks[0]);
     }
     if (!joystick) {
         return SDL_FALSE;
     }

     while ((size = hid_read_timeout(device->dev, data, sizeof(data), 0)) > 0) {
 #ifdef DEBUG_XBOX_PROTOCOL
         HIDAPI_DumpPacket("Xbox 360 packet: size = %d", data, size);
 #endif
         if (data[0] == 0x00) {
             HIDAPI_DriverXbox360_HandleStatePacket(joystick, ctx, data, size);
         }
     }

     if (size < 0) {
         /* Read error, device is disconnected */
         HIDAPI_JoystickDisconnected(device, joystick->instance_id);
     }
     return (size >= 0);
 }

 static void
 HIDAPI_DriverXbox360_CloseJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
 {
     SDL_LockMutex(device->dev_lock);
     {
         if (device->dev) {
             hid_close(device->dev);
             device->dev = NULL;
         }

         SDL_free(device->context);
         device->context = NULL;
     }
     SDL_UnlockMutex(device->dev_lock);
 }

 static void
 HIDAPI_DriverXbox360_FreeDevice(SDL_HIDAPI_Device *device)
 {
 }

 SDL_HIDAPI_DeviceDriver SDL_HIDAPI_DriverXbox360 =
 {
     SDL_HINT_JOYSTICK_HIDAPI_XBOX,
     SDL_TRUE,
     HIDAPI_DriverXbox360_IsSupportedDevice,
     HIDAPI_DriverXbox360_GetDeviceName,
     HIDAPI_DriverXbox360_InitDevice,
     HIDAPI_DriverXbox360_GetDevicePlayerIndex,
     HIDAPI_DriverXbox360_SetDevicePlayerIndex,
     HIDAPI_DriverXbox360_UpdateDevice,
     HIDAPI_DriverXbox360_OpenJoystick,
     HIDAPI_DriverXbox360_RumbleJoystick,
     HIDAPI_DriverXbox360_RumbleJoystickTriggers,
     HIDAPI_DriverXbox360_HasJoystickLED,
     HIDAPI_DriverXbox360_SetJoystickLED,
     HIDAPI_DriverXbox360_SetJoystickSensorsEnabled,
     HIDAPI_DriverXbox360_CloseJoystick,
     HIDAPI_DriverXbox360_FreeDevice,
 };

 #endif /* SDL_JOYSTICK_HIDAPI_XBOX360 */

 #endif /* SDL_JOYSTICK_HIDAPI */

 /* vi: set ts=4 sw=4 expandtab: */
	/*
	Simple DirectMedia Layer
	Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>

	This software is provided 'as-is', without any express or implied
	warranty. In no event will the authors be held liable for any damages
	arising from the use of this software.

	Permission is granted to anyone to use this software for any purpose,
	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_internal.h"

	#ifdef SDL_JOYSTICK_HIDAPI

	#include "SDL_hints.h"
	#include "SDL_events.h"
	#include "SDL_timer.h"
	#include "SDL_joystick.h"
	#include "SDL_gamecontroller.h"
	#include "../SDL_sysjoystick.h"
	#include "SDL_hidapijoystick_c.h"
	#include "SDL_hidapi_rumble.h"


	#ifdef SDL_JOYSTICK_HIDAPI_XBOX360

	/* Define this if you want to log all packets from the controller */
	/#define DEBUG_XBOX_PROTOCOL/


	typedef struct {
	Uint8 last_state[USB_PACKET_LENGTH];
	} SDL_DriverXbox360_Context;

	static SDL_bool
	HIDAPI_DriverXbox360_IsSupportedDevice(const char *name, SDL_GameControllerType type, Uint16 vendor_id, Uint16 product_id, Uint16 version, int interface_number, int interface_class, int interface_subclass, int interface_protocol)
	{
	const int XB360W_IFACE_PROTOCOL = 129; /* Wireless */

	if (vendor_id == USB_VENDOR_NVIDIA) {
	/* This is the NVIDIA Shield controller which doesn't talk Xbox controller protocol */
	return SDL_FALSE;
	}
	if ((vendor_id == USB_VENDOR_MICROSOFT && (product_id == 0x0291 \|\| product_id == 0x0719)) \|\|
	(type == SDL_CONTROLLER_TYPE_XBOX360 && interface_protocol == XB360W_IFACE_PROTOCOL)) {
	/* This is the wireless dongle, which talks a different protocol */
	return SDL_FALSE;
	}
	if (interface_number > 0) {
	/* This is the chatpad or other input interface, not the Xbox 360 interface */
	return SDL_FALSE;
	}
	#if defined(__MACOSX__) \|\| defined(__WIN32__)
	if (vendor_id == USB_VENDOR_MICROSOFT && product_id == 0x028e && version == 1) {
	/* This is the Steam Virtual Gamepad, which isn't supported by this driver */
	return SDL_FALSE;
	}
	#endif
	#if defined(__MACOSX__)
	/* Wired Xbox One controllers are handled by this driver, interfacing with
	the 360Controller driver available from:
	https://github.com/360Controller/360Controller/releases

	Bluetooth Xbox One controllers are handled by the SDL Xbox One driver
	*/
	if (SDL_IsJoystickBluetoothXboxOne(vendor_id, product_id)) {
	return SDL_FALSE;
	}
	return (type == SDL_CONTROLLER_TYPE_XBOX360 \|\| type == SDL_CONTROLLER_TYPE_XBOXONE) ? SDL_TRUE : SDL_FALSE;
	#else
	return (type == SDL_CONTROLLER_TYPE_XBOX360) ? SDL_TRUE : SDL_FALSE;
	#endif
	}

	static const char *
	HIDAPI_DriverXbox360_GetDeviceName(Uint16 vendor_id, Uint16 product_id)
	{
	return NULL;
	}

	static SDL_bool SetSlotLED(hid_device *dev, Uint8 slot)
	{
	const SDL_bool blink = SDL_FALSE;
	Uint8 mode = (blink ? 0x02 : 0x06) + slot;
	Uint8 led_packet[] = { 0x01, 0x03, 0x00 };

	led_packet[2] = mode;
	if (hid_write(dev, led_packet, sizeof(led_packet)) != sizeof(led_packet)) {
	return SDL_FALSE;
	}
	return SDL_TRUE;
	}

	static SDL_bool
	HIDAPI_DriverXbox360_InitDevice(SDL_HIDAPI_Device *device)
	{
	return HIDAPI_JoystickConnected(device, NULL);
	}

	static int
	HIDAPI_DriverXbox360_GetDevicePlayerIndex(SDL_HIDAPI_Device *device, SDL_JoystickID instance_id)
	{
	return -1;
	}

	static void
	HIDAPI_DriverXbox360_SetDevicePlayerIndex(SDL_HIDAPI_Device *device, SDL_JoystickID instance_id, int player_index)
	{
	if (!device->dev) {
	return;
	}
	if (player_index >= 0) {
	SetSlotLED(device->dev, (player_index % 4));
	}
	}

	static SDL_bool
	HIDAPI_DriverXbox360_OpenJoystick(SDL_HIDAPI_Device device, SDL_Joystick joystick)
	{
	SDL_DriverXbox360_Context *ctx;
	int player_index;

	ctx = (SDL_DriverXbox360_Context )SDL_calloc(1, sizeof(ctx));
	if (!ctx) {
	SDL_OutOfMemory();
	return SDL_FALSE;
	}

	device->dev = hid_open_path(device->path, 0);
	if (!device->dev) {
	SDL_SetError("Couldn't open %s", device->path);
	SDL_free(ctx);
	return SDL_FALSE;
	}
	device->context = ctx;

	/* Set the controller LED */
	player_index = SDL_JoystickGetPlayerIndex(joystick);
	if (player_index >= 0) {
	SetSlotLED(device->dev, (player_index % 4));
	}

	/* Initialize the joystick capabilities */
	joystick->nbuttons = 15;
	joystick->naxes = SDL_CONTROLLER_AXIS_MAX;
	joystick->epowerlevel = SDL_JOYSTICK_POWER_WIRED;

	return SDL_TRUE;
	}

	static int
	HIDAPI_DriverXbox360_RumbleJoystick(SDL_HIDAPI_Device device, SDL_Joystick joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble)
	{
	#ifdef __MACOSX__
	if (SDL_IsJoystickBluetoothXboxOne(device->vendor_id, device->product_id)) {
	Uint8 rumble_packet[] = { 0x03, 0x0F, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0x00 };

	rumble_packet[4] = (low_frequency_rumble >> 8);
	rumble_packet[5] = (high_frequency_rumble >> 8);

	if (SDL_HIDAPI_SendRumble(device, rumble_packet, sizeof(rumble_packet)) != sizeof(rumble_packet)) {
	return SDL_SetError("Couldn't send rumble packet");
	}
	} else {
	/* On Mac OS X the 360Controller driver uses this short report,
	and we need to prefix it with a magic token so hidapi passes it through untouched
	*/
	Uint8 rumble_packet[] = { 'M', 'A', 'G', 'I', 'C', '0', 0x00, 0x04, 0x00, 0x00 };

	rumble_packet[6+2] = (low_frequency_rumble >> 8);
	rumble_packet[6+3] = (high_frequency_rumble >> 8);

	if (SDL_HIDAPI_SendRumble(device, rumble_packet, sizeof(rumble_packet)) != sizeof(rumble_packet)) {
	return SDL_SetError("Couldn't send rumble packet");
	}
	}
	#else
	Uint8 rumble_packet[] = { 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

	rumble_packet[3] = (low_frequency_rumble >> 8);
	rumble_packet[4] = (high_frequency_rumble >> 8);

	if (SDL_HIDAPI_SendRumble(device, rumble_packet, sizeof(rumble_packet)) != sizeof(rumble_packet)) {
	return SDL_SetError("Couldn't send rumble packet");
	}
	#endif
	return 0;
	}

	static int
	HIDAPI_DriverXbox360_RumbleJoystickTriggers(SDL_HIDAPI_Device device, SDL_Joystick joystick, Uint16 left_rumble, Uint16 right_rumble)
	{
	return SDL_Unsupported();
	}

	static SDL_bool
	HIDAPI_DriverXbox360_HasJoystickLED(SDL_HIDAPI_Device device, SDL_Joystick joystick)
	{
	/* Doesn't have an RGB LED, so don't return true here */
	return SDL_FALSE;
	}

	static int
	HIDAPI_DriverXbox360_SetJoystickLED(SDL_HIDAPI_Device device, SDL_Joystick joystick, Uint8 red, Uint8 green, Uint8 blue)
	{
	return SDL_Unsupported();
	}

	static int
	HIDAPI_DriverXbox360_SetJoystickSensorsEnabled(SDL_HIDAPI_Device device, SDL_Joystick joystick, SDL_bool enabled)
	{
	return SDL_Unsupported();
	}

	static void
	HIDAPI_DriverXbox360_HandleStatePacket(SDL_Joystick joystick, SDL_DriverXbox360_Context ctx, Uint8 *data, int size)
	{
	Sint16 axis;
	#ifdef __MACOSX__
	const SDL_bool invert_y_axes = SDL_FALSE;
	#else
	const SDL_bool invert_y_axes = SDL_TRUE;
	#endif

	if (ctx->last_state[2] != data[2]) {
	SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_UP, (data[2] & 0x01) ? SDL_PRESSED : SDL_RELEASED);
	SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_DOWN, (data[2] & 0x02) ? SDL_PRESSED : SDL_RELEASED);
	SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_LEFT, (data[2] & 0x04) ? SDL_PRESSED : SDL_RELEASED);
	SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_RIGHT, (data[2] & 0x08) ? SDL_PRESSED : SDL_RELEASED);
	SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_START, (data[2] & 0x10) ? SDL_PRESSED : SDL_RELEASED);
	SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_BACK, (data[2] & 0x20) ? SDL_PRESSED : SDL_RELEASED);
	SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_LEFTSTICK, (data[2] & 0x40) ? SDL_PRESSED : SDL_RELEASED);
	SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_RIGHTSTICK, (data[2] & 0x80) ? SDL_PRESSED : SDL_RELEASED);
	}

	if (ctx->last_state[3] != data[3]) {
	SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_LEFTSHOULDER, (data[3] & 0x01) ? SDL_PRESSED : SDL_RELEASED);
	SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_RIGHTSHOULDER, (data[3] & 0x02) ? SDL_PRESSED : SDL_RELEASED);
	SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_GUIDE, (data[3] & 0x04) ? SDL_PRESSED : SDL_RELEASED);
	SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_A, (data[3] & 0x10) ? SDL_PRESSED : SDL_RELEASED);
	SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_B, (data[3] & 0x20) ? SDL_PRESSED : SDL_RELEASED);
	SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_X, (data[3] & 0x40) ? SDL_PRESSED : SDL_RELEASED);
	SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_Y, (data[3] & 0x80) ? SDL_PRESSED : SDL_RELEASED);
	}

	axis = ((int)data[4] * 257) - 32768;
	SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_TRIGGERLEFT, axis);
	axis = ((int)data[5] * 257) - 32768;
	SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_TRIGGERRIGHT, axis);
	axis = (Sint16)(&data[6]);
	SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_LEFTX, axis);
	axis = (Sint16)(&data[8]);
	if (invert_y_axes) {
	axis = ~axis;
	}
	SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_LEFTY, axis);
	axis = (Sint16)(&data[10]);
	SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_RIGHTX, axis);
	axis = (Sint16)(&data[12]);
	if (invert_y_axes) {
	axis = ~axis;
	}
	SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_RIGHTY, axis);

	SDL_memcpy(ctx->last_state, data, SDL_min(size, sizeof(ctx->last_state)));
	}

	static SDL_bool
	HIDAPI_DriverXbox360_UpdateDevice(SDL_HIDAPI_Device *device)
	{
	SDL_DriverXbox360_Context ctx = (SDL_DriverXbox360_Context )device->context;
	SDL_Joystick *joystick = NULL;
	Uint8 data[USB_PACKET_LENGTH];
	int size = 0;

	if (device->num_joysticks > 0) {
	joystick = SDL_JoystickFromInstanceID(device->joysticks[0]);
	}
	if (!joystick) {
	return SDL_FALSE;
	}

	while ((size = hid_read_timeout(device->dev, data, sizeof(data), 0)) > 0) {
	#ifdef DEBUG_XBOX_PROTOCOL
	HIDAPI_DumpPacket("Xbox 360 packet: size = %d", data, size);
	#endif
	if (data[0] == 0x00) {
	HIDAPI_DriverXbox360_HandleStatePacket(joystick, ctx, data, size);
	}
	}

	if (size < 0) {
	/* Read error, device is disconnected */
	HIDAPI_JoystickDisconnected(device, joystick->instance_id);
	}
	return (size >= 0);
	}

	static void
	HIDAPI_DriverXbox360_CloseJoystick(SDL_HIDAPI_Device device, SDL_Joystick joystick)
	{
	SDL_LockMutex(device->dev_lock);
	{
	if (device->dev) {
	hid_close(device->dev);
	device->dev = NULL;
	}

	SDL_free(device->context);
	device->context = NULL;
	}
	SDL_UnlockMutex(device->dev_lock);
	}

	static void
	HIDAPI_DriverXbox360_FreeDevice(SDL_HIDAPI_Device *device)
	{
	}

	SDL_HIDAPI_DeviceDriver SDL_HIDAPI_DriverXbox360 =
	{
	SDL_HINT_JOYSTICK_HIDAPI_XBOX,
	SDL_TRUE,
	HIDAPI_DriverXbox360_IsSupportedDevice,
	HIDAPI_DriverXbox360_GetDeviceName,
	HIDAPI_DriverXbox360_InitDevice,
	HIDAPI_DriverXbox360_GetDevicePlayerIndex,
	HIDAPI_DriverXbox360_SetDevicePlayerIndex,
	HIDAPI_DriverXbox360_UpdateDevice,
	HIDAPI_DriverXbox360_OpenJoystick,
	HIDAPI_DriverXbox360_RumbleJoystick,
	HIDAPI_DriverXbox360_RumbleJoystickTriggers,
	HIDAPI_DriverXbox360_HasJoystickLED,
	HIDAPI_DriverXbox360_SetJoystickLED,
	HIDAPI_DriverXbox360_SetJoystickSensorsEnabled,
	HIDAPI_DriverXbox360_CloseJoystick,
	HIDAPI_DriverXbox360_FreeDevice,
	};

	#endif /* SDL_JOYSTICK_HIDAPI_XBOX360 */

	#endif /* SDL_JOYSTICK_HIDAPI */

	/* vi: set ts=4 sw=4 expandtab: */