#include "Controllers/Xbox360WirelessController.h" #include static ControllerConfig _xbox360WControllerConfig{}; static const uint8_t reconnectPacket[]{0x08, 0x00, 0x0F, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; static const uint8_t poweroffPacket[]{0x00, 0x00, 0x08, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; static const uint8_t initDriverPacket[]{0x00, 0x00, 0x02, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; static const uint8_t ledPacketOn[]{0x00, 0x00, 0x08, 0x40 | XBOX360LED_TOPLEFT, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; Xbox360WirelessController::Xbox360WirelessController(std::unique_ptr &&interface) : IController(std::move(interface)) { } Xbox360WirelessController::~Xbox360WirelessController() { Exit(); } Status Xbox360WirelessController::Initialize() { Status rc; m_outputBuffer.clear(); m_outputBuffer.reserve(4); rc = OpenInterfaces(); if (S_FAILED(rc)) return rc; rc = WriteToEndpoint(reconnectPacket, sizeof(reconnectPacket)); if (S_FAILED(rc)) return rc; SetLED(XBOX360LED_TOPLEFT); return rc; } void Xbox360WirelessController::Exit() { CloseInterfaces(); } Status Xbox360WirelessController::OpenInterfaces() { Status rc; rc = m_device->Open(); if (S_FAILED(rc)) return rc; //This will open each interface and try to acquire Xbox 360 controller's in and out endpoints, if it hasn't already std::vector> &interfaces = m_device->GetInterfaces(); for (auto &&interface : interfaces) { rc = interface->Open(); if (S_FAILED(rc)) return rc; if (interface->GetDescriptor()->bInterfaceProtocol != 129) continue; if (interface->GetDescriptor()->bNumEndpoints < 2) continue; if (!m_inPipe) { for (int i = 0; i != 15; ++i) { IUSBEndpoint *inEndpoint = interface->GetEndpoint(IUSBEndpoint::USB_ENDPOINT_IN, i); if (inEndpoint) { rc = inEndpoint->Open(); if (S_FAILED(rc)) return 55555; m_inPipe = inEndpoint; break; } } } if (!m_outPipe) { for (int i = 0; i != 15; ++i) { IUSBEndpoint *outEndpoint = interface->GetEndpoint(IUSBEndpoint::USB_ENDPOINT_OUT, i); if (outEndpoint) { rc = outEndpoint->Open(); if (S_FAILED(rc)) return 66666; m_outPipe = outEndpoint; break; } } } } if (!m_inPipe || !m_outPipe) return 3469; return rc; } void Xbox360WirelessController::CloseInterfaces() { if (m_presence) WriteToEndpoint(poweroffPacket, sizeof(poweroffPacket)); //m_device->Reset(); m_device->Close(); } Status Xbox360WirelessController::GetInput() { uint8_t input_bytes[64]; Status rc = m_inPipe->Read(input_bytes, sizeof(input_bytes)); uint8_t type = input_bytes[0]; if (input_bytes[0] & 0x08) { bool newPresence = (input_bytes[1] & 0x80) != 0; if (m_presence != newPresence) { m_presence = newPresence; if (m_presence) OnControllerConnect(); else OnControllerDisconnect(); } } if (input_bytes[1] != 0x1) return 1; if (type == XBOX360INPUT_BUTTON) { m_buttonData = *reinterpret_cast(input_bytes + 4); } return rc; } float Xbox360WirelessController::NormalizeTrigger(uint8_t value) { uint16_t deadzone = (UINT8_MAX * _xbox360WControllerConfig.triggerDeadzonePercent) / 100; //If the given value is below the trigger zone, save the calc and return 0, otherwise adjust the value to the deadzone return value < deadzone ? 0 : static_cast(value - deadzone) / (UINT8_MAX - deadzone); } void Xbox360WirelessController::NormalizeAxis(int16_t x, int16_t y, uint8_t deadzonePercent, float *x_out, float *y_out) { float x_val = x; float y_val = y; // Determine how far the stick is pushed. //This will never exceed 32767 because if the stick is //horizontally maxed in one direction, vertically it must be neutral(0) and vice versa float real_magnitude = std::sqrt(x_val * x_val + y_val * y_val); float real_deadzone = (32767 * deadzonePercent) / 100; // Check if the controller is outside a circular dead zone. if (real_magnitude > real_deadzone) { // Clip the magnitude at its expected maximum value. float magnitude = std::min(32767.0f, real_magnitude); // Adjust magnitude relative to the end of the dead zone. magnitude -= real_deadzone; // Normalize the magnitude with respect to its expected range giving a // magnitude value of 0.0 to 1.0 //ratio = (currentValue / maxValue) / realValue float ratio = (magnitude / (32767 - real_deadzone)) / real_magnitude; *x_out = x_val * ratio; *y_out = y_val * ratio; } else { // If the controller is in the deadzone zero out the magnitude. *x_out = *y_out = 0.0f; } } //Pass by value should hopefully be optimized away by RVO NormalizedButtonData Xbox360WirelessController::GetNormalizedButtonData() { NormalizedButtonData normalData; normalData.triggers[0] = NormalizeTrigger(m_buttonData.trigger_left); normalData.triggers[1] = NormalizeTrigger(m_buttonData.trigger_right); NormalizeAxis(m_buttonData.stick_left_x, m_buttonData.stick_left_y, _xbox360WControllerConfig.leftStickDeadzonePercent, &normalData.sticks[0].axis_x, &normalData.sticks[0].axis_y); NormalizeAxis(m_buttonData.stick_right_x, m_buttonData.stick_right_y, _xbox360WControllerConfig.rightStickDeadzonePercent, &normalData.sticks[1].axis_x, &normalData.sticks[1].axis_y); bool buttons[NUM_CONTROLLERBUTTONS]{ m_buttonData.y, m_buttonData.b, m_buttonData.a, m_buttonData.x, m_buttonData.stick_left_click, m_buttonData.stick_right_click, m_buttonData.bumper_left, m_buttonData.bumper_right, normalData.triggers[0] > 0, normalData.triggers[1] > 0, m_buttonData.back, m_buttonData.start, m_buttonData.dpad_up, m_buttonData.dpad_right, m_buttonData.dpad_down, m_buttonData.dpad_left, false, m_buttonData.guide, }; for (int i = 0; i != NUM_CONTROLLERBUTTONS; ++i) { ControllerButton button = _xbox360WControllerConfig.buttons[i]; normalData.buttons[(button != NOT_SET ? button : i)] = buttons[i]; } return normalData; } Status Xbox360WirelessController::SetRumble(uint8_t strong_magnitude, uint8_t weak_magnitude) { uint8_t rumbleData[]{0x00, 0x01, 0x0F, 0xC0, 0x00, strong_magnitude, weak_magnitude, 0x00, 0x00, 0x00, 0x00, 0x00}; return WriteToEndpoint(rumbleData, sizeof(rumbleData)); } Status Xbox360WirelessController::SetLED(Xbox360LEDValue value) { uint8_t customLEDPacket[]{0x00, 0x00, 0x08, static_cast(value | 0x40), 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; return WriteToEndpoint(customLEDPacket, sizeof(customLEDPacket)); } void Xbox360WirelessController::LoadConfig(const ControllerConfig *config) { _xbox360WControllerConfig = *config; } ControllerConfig *Xbox360WirelessController::GetConfig() { return &_xbox360WControllerConfig; } Status Xbox360WirelessController::OnControllerConnect() { m_outputBuffer.push_back(OutputPacket{reconnectPacket, sizeof(reconnectPacket)}); m_outputBuffer.push_back(OutputPacket{initDriverPacket, sizeof(initDriverPacket)}); m_outputBuffer.push_back(OutputPacket{ledPacketOn, sizeof(ledPacketOn)}); return 0; } Status Xbox360WirelessController::OnControllerDisconnect() { m_outputBuffer.push_back(OutputPacket{poweroffPacket, sizeof(poweroffPacket)}); return 0; } Status Xbox360WirelessController::WriteToEndpoint(const uint8_t *buffer, size_t size) { return m_outPipe->Write(buffer, size); } Status Xbox360WirelessController::OutputBuffer() { if (m_outputBuffer.empty()) return 1; Status rc; auto it = m_outputBuffer.begin(); rc = WriteToEndpoint(it->packet, it->length); m_outputBuffer.erase(it); return rc; }