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+/*
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+ Simple DirectMedia Layer
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+ Copyright (C) 1997-2026 Sam Lantinga <slouken@libsdl.org>
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+
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+ This software is provided 'as-is', without any express or implied
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+ warranty. In no event will the authors be held liable for any damages
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+ arising from the use of this software.
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+
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+ Permission is granted to anyone to use this software for any purpose,
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+ including commercial applications, and to alter it and redistribute it
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+ freely, subject to the following restrictions:
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+
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+ 1. The origin of this software must not be misrepresented; you must not
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+ claim that you wrote the original software. If you use this software
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+ in a product, an acknowledgment in the product documentation would be
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+ appreciated but is not required.
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+ 2. Altered source versions must be plainly marked as such, and must not be
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+ misrepresented as being the original software.
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+ 3. This notice may not be removed or altered from any source distribution.
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+*/
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+#include "SDL_internal.h"
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+
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+#ifdef SDL_JOYSTICK_HIDAPI
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+
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+#include "../../SDL_hints_c.h"
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+#include "../SDL_sysjoystick.h"
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+#include "SDL_hidapijoystick_c.h"
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+#include "SDL_hidapi_rumble.h"
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+#include "SDL_hidapi_xbox360.h"
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+
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+#ifdef SDL_JOYSTICK_HIDAPI_XBOX360
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+
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+// Define this if you want to log all packets from the controller
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+// #define DEBUG_XBOX_PROTOCOL
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+
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+#define MAX_CONTROLLERS 4
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+
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+enum
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+{
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+ SDL_GAMEPAD_BUTTON_XBOX360_BIG_BUTTON = SDL_GAMEPAD_BUTTON_START + 1,
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+ SDL_GAMEPAD_NUM_XBOX360BB_BUTTONS,
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+};
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+
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+typedef struct
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+{
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+ SDL_HIDAPI_Device *device;
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+ SDL_JoystickID joysticks[MAX_CONTROLLERS];
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+ Uint8 last_state[MAX_CONTROLLERS][USB_PACKET_LENGTH];
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+ Uint64 last_packet[MAX_CONTROLLERS];
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+} SDL_DriverXbox360BB_Context;
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+
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+static void HIDAPI_DriverXBOX360BB_RegisterHints(SDL_HintCallback callback, void *userdata)
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+{
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+ SDL_AddHintCallback(SDL_HINT_JOYSTICK_HIDAPI_XBOX, callback, userdata);
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+ SDL_AddHintCallback(SDL_HINT_JOYSTICK_HIDAPI_XBOX_360, callback, userdata);
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+}
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+
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+static void HIDAPI_DriverXBOX360BB_UnregisterHints(SDL_HintCallback callback, void *userdata)
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+{
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+ SDL_RemoveHintCallback(SDL_HINT_JOYSTICK_HIDAPI_XBOX, callback, userdata);
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+ SDL_RemoveHintCallback(SDL_HINT_JOYSTICK_HIDAPI_XBOX_360, callback, userdata);
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+}
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+
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+static bool HIDAPI_DriverXBOX360BB_IsEnabled(void)
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+{
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+ return SDL_GetHintBoolean(SDL_HINT_JOYSTICK_HIDAPI_XBOX_360, SDL_GetHintBoolean(SDL_HINT_JOYSTICK_HIDAPI_XBOX, SDL_GetHintBoolean(SDL_HINT_JOYSTICK_HIDAPI, SDL_HIDAPI_DEFAULT)));
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+}
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+
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+static bool HIDAPI_DriverXBOX360BB_IsSupportedDevice(SDL_HIDAPI_Device *device, const char *name, SDL_GamepadType type, Uint16 vendor_id, Uint16 product_id, Uint16 version, int interface_number, int interface_class, int interface_subclass, int interface_protocol)
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+{
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+ return (vendor_id == USB_VENDOR_MICROSOFT) && (product_id == USB_PRODUCT_XBOX360_BIGBUTTON_RECEIVER);
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+}
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+
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+static bool HIDAPI_DriverXBOX360BB_InitDevice(SDL_HIDAPI_Device *device)
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+{
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+ SDL_DriverXbox360BB_Context *ctx;
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+ Uint8 i;
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+
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+ HIDAPI_SetDeviceName(device, "Xbox 360 Big Button Controller");
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+
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+ ctx = (SDL_DriverXbox360BB_Context *)SDL_calloc(1, sizeof(*ctx));
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+ if (!ctx) {
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+ return false;
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+ }
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+ ctx->device = device;
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+
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+ device->context = ctx;
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+
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+ for (i = 0; i < MAX_CONTROLLERS; ++i) {
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+ HIDAPI_JoystickConnected(device, &ctx->joysticks[i]);
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+ }
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+
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+ return true;
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+}
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+
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+static int HIDAPI_DriverXBOX360BB_GetDevicePlayerIndex(SDL_HIDAPI_Device *device, SDL_JoystickID instance_id)
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+{
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+ return -1;
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+}
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+
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+static void HIDAPI_DriverXBOX360BB_SetDevicePlayerIndex(SDL_HIDAPI_Device *device, SDL_JoystickID instance_id, int player_index)
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+{
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+}
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+
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+static bool HIDAPI_DriverXBOX360BB_OpenJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
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+{
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+ SDL_DriverXbox360BB_Context *ctx = (SDL_DriverXbox360BB_Context *)device->context;
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+ Uint8 i;
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+
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+ SDL_AssertJoysticksLocked();
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+
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+ for (i = 0; i < MAX_CONTROLLERS; ++i) {
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+ if (joystick->instance_id == ctx->joysticks[i]) {
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+ joystick->nbuttons = SDL_GAMEPAD_NUM_XBOX360BB_BUTTONS;
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+ joystick->nhats = 1;
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+ joystick->connection_state = SDL_JOYSTICK_CONNECTION_WIRELESS;
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+ return true;
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+ }
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+ }
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+ return false; // Should never get here!
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+}
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+
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+static bool HIDAPI_DriverXBOX360BB_RumbleJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble)
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+{
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+ return SDL_Unsupported();
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+}
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+
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+static bool HIDAPI_DriverXBOX360BB_RumbleJoystickTriggers(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 left_rumble, Uint16 right_rumble)
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+{
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+ return SDL_Unsupported();
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+}
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+
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+static Uint32 HIDAPI_DriverXBOX360BB_GetJoystickCapabilities(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
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+{
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+ return 0;
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+}
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+
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+static bool HIDAPI_DriverXBOX360BB_SetJoystickLED(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint8 red, Uint8 green, Uint8 blue)
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+{
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+ return SDL_Unsupported();
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+}
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+
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+static bool HIDAPI_DriverXBOX360BB_SendJoystickEffect(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, const void *data, int size)
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+{
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+ return SDL_Unsupported();
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+}
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+
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+static bool HIDAPI_DriverXBOX360BB_SetJoystickSensorsEnabled(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, bool enabled)
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+{
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+ return SDL_Unsupported();
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+}
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+
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+static void HIDAPI_DriverXBOX360BB_HandleStatePacket(SDL_DriverXbox360BB_Context *ctx, Uint8 *data, int size)
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+{
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+ Uint64 timestamp = SDL_GetTicksNS();
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+ SDL_Joystick *joystick;
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+ Uint8 i;
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+
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+ i = data[2];
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+ SDL_assert(i < MAX_CONTROLLERS);
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+ joystick = SDL_GetJoystickFromID(ctx->joysticks[i]);
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+ ctx->last_packet[i] = timestamp;
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+
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+ if (ctx->last_state[i][3] != data[3]) {
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+ Uint8 hat = 0;
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+
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+ if (data[3] & 0x01) {
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+ hat |= SDL_HAT_UP;
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+ }
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+ if (data[3] & 0x02) {
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+ hat |= SDL_HAT_DOWN;
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+ }
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+ if (data[3] & 0x04) {
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+ hat |= SDL_HAT_LEFT;
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+ }
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+ if (data[3] & 0x08) {
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+ hat |= SDL_HAT_RIGHT;
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+ }
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+ SDL_SendJoystickHat(timestamp, joystick, 0, hat);
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+
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+ SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_START, ((data[3] & 0x10) != 0));
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+ SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_BACK, ((data[3] & 0x20) != 0));
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+ }
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+
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+ if (ctx->last_state[i][4] != data[4]) {
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+ SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_GUIDE, ((data[4] & 0x04) != 0));
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+ SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_XBOX360_BIG_BUTTON, ((data[4] & 0x08) != 0));
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+ SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_SOUTH, ((data[4] & 0x10) != 0));
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+ SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_EAST, ((data[4] & 0x20) != 0));
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+ SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_WEST, ((data[4] & 0x40) != 0));
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+ SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_NORTH, ((data[4] & 0x80) != 0));
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+ }
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+
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+ SDL_memcpy(ctx->last_state[i], data, SDL_min(size, sizeof(ctx->last_state[i])));
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+}
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+
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+static void HIDAPI_DriverXBOX360BB_HandleReleaseEvents(SDL_DriverXbox360BB_Context *ctx)
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+{
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+ Uint64 timestamp = SDL_GetTicksNS();
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+ Uint8 i;
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+
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+ // The receiver only sends packets when a button is down, handle our own release logic
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+ for (i = 0; i < MAX_CONTROLLERS; ++i) {
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+ // FIXME: Even when a button is continuously pressed, we get _huge_
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+ // delays between packets. This is the smallest number I could get
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+ // without erroneous button releases. Yeesh.
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+ // -flibit
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+ const int XBOXBB_BUTTON_RELEASE_TIMEOUT_MS = 120;
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+ if (SDL_NS_TO_MS(timestamp - ctx->last_packet[i]) >= XBOXBB_BUTTON_RELEASE_TIMEOUT_MS) {
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+ SDL_Joystick *joystick = SDL_GetJoystickFromID(ctx->joysticks[i]);
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+ if (joystick) {
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+ SDL_SendJoystickHat(timestamp, joystick, 0, 0);
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+ SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_SOUTH, 0);
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+ SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_EAST, 0);
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+ SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_WEST, 0);
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+ SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_NORTH, 0);
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+ SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_BACK, 0);
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+ SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_GUIDE, 0);
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+ SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_START, 0);
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+ SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_XBOX360_BIG_BUTTON, 0);
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+ }
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+ SDL_zero(ctx->last_state[i]);
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+ ctx->last_packet[i] = timestamp;
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+ }
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+ }
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+}
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+
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+static bool HIDAPI_DriverXBOX360BB_UpdateDevice(SDL_HIDAPI_Device *device)
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+{
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+ SDL_DriverXbox360BB_Context *ctx = (SDL_DriverXbox360BB_Context *)device->context;
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+ Uint8 data[USB_PACKET_LENGTH];
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+ int size;
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+
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+ while ((size = SDL_hid_read_timeout(device->dev, data, sizeof(data), 0)) > 0) {
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+#ifdef DEBUG_XBOX_PROTOCOL
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+ HIDAPI_DumpPacket("Xbox 360 BigButton packet: size = %d", data, size);
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+#endif
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+ if (size == 5) {
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+ HIDAPI_DriverXBOX360BB_HandleStatePacket(ctx, data, size);
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+ }
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+ }
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+
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+ HIDAPI_DriverXBOX360BB_HandleReleaseEvents(ctx);
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+
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+ return (size >= 0);
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+}
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+
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+static void HIDAPI_DriverXBOX360BB_CloseJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
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+{
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+}
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+
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+static void HIDAPI_DriverXBOX360BB_FreeDevice(SDL_HIDAPI_Device *device)
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+{
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+}
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+
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+SDL_HIDAPI_DeviceDriver SDL_HIDAPI_DriverXbox360BB = {
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+ "SDL_JOYSTICK_HIDAPI_XBOX_360_BIGBUTTON",
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+ true,
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+ HIDAPI_DriverXBOX360BB_RegisterHints,
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+ HIDAPI_DriverXBOX360BB_UnregisterHints,
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+ HIDAPI_DriverXBOX360BB_IsEnabled,
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+ HIDAPI_DriverXBOX360BB_IsSupportedDevice,
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+ HIDAPI_DriverXBOX360BB_InitDevice,
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+ HIDAPI_DriverXBOX360BB_GetDevicePlayerIndex,
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+ HIDAPI_DriverXBOX360BB_SetDevicePlayerIndex,
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+ HIDAPI_DriverXBOX360BB_UpdateDevice,
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+ HIDAPI_DriverXBOX360BB_OpenJoystick,
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+ HIDAPI_DriverXBOX360BB_RumbleJoystick,
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+ HIDAPI_DriverXBOX360BB_RumbleJoystickTriggers,
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+ HIDAPI_DriverXBOX360BB_GetJoystickCapabilities,
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+ HIDAPI_DriverXBOX360BB_SetJoystickLED,
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+ HIDAPI_DriverXBOX360BB_SendJoystickEffect,
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+ HIDAPI_DriverXBOX360BB_SetJoystickSensorsEnabled,
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+ HIDAPI_DriverXBOX360BB_CloseJoystick,
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+ HIDAPI_DriverXBOX360BB_FreeDevice,
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+};
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+
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+#endif // SDL_JOYSTICK_HIDAPI_XBOX360
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+
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+#endif // SDL_JOYSTICK_HIDAPI
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Ethan Lee