mirror of
https://git.eden-emu.dev/eden-emu/eden
synced 2026-10-14 15:10:46 -04:00
Ameer
375 lines
12 KiB
C++
375 lines
12 KiB
C++
// Copyright 2014 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include "common/logging/log.h"
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#include "common/threadsafe_queue.h"
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#include "input_common/gcadapter/gc_adapter.h"
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Common::SPSCQueue<GCPadStatus> pad_queue[4];
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struct GCState state[4];
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namespace GCAdapter {
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static libusb_device_handle* usb_adapter_handle = nullptr;
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static u8 adapter_controllers_status[4] = {
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ControllerTypes::CONTROLLER_NONE, ControllerTypes::CONTROLLER_NONE,
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ControllerTypes::CONTROLLER_NONE, ControllerTypes::CONTROLLER_NONE};
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static std::mutex s_mutex;
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static std::thread adapter_input_thread;
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static bool adapter_thread_running;
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static std::mutex initialization_mutex;
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static std::thread detect_thread;
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static bool detect_thread_running = false;
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static libusb_context* libusb_ctx;
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static u8 input_endpoint = 0;
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static bool configuring = false;
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GCPadStatus CheckStatus(int port, u8 adapter_payload[37]) {
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GCPadStatus pad = {};
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bool get_origin = false;
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u8 type = adapter_payload[1 + (9 * port)] >> 4;
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if (type)
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get_origin = true;
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adapter_controllers_status[port] = type;
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if (adapter_controllers_status[port] != ControllerTypes::CONTROLLER_NONE) {
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u8 b1 = adapter_payload[1 + (9 * port) + 1];
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u8 b2 = adapter_payload[1 + (9 * port) + 2];
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if (b1 & (1 << 0)) {
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pad.button |= PAD_BUTTON_A;
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}
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if (b1 & (1 << 1)) {
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pad.button |= PAD_BUTTON_B;
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}
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if (b1 & (1 << 2)) {
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pad.button |= PAD_BUTTON_X;
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}
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if (b1 & (1 << 3)) {
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pad.button |= PAD_BUTTON_Y;
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}
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if (b1 & (1 << 4)) {
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pad.button |= PAD_BUTTON_LEFT;
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}
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if (b1 & (1 << 5)) {
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pad.button |= PAD_BUTTON_RIGHT;
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}
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if (b1 & (1 << 6)) {
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pad.button |= PAD_BUTTON_DOWN;
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}
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if (b1 & (1 << 7)) {
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pad.button |= PAD_BUTTON_UP;
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}
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if (b2 & (1 << 0)) {
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pad.button |= PAD_BUTTON_START;
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}
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if (b2 & (1 << 1)) {
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pad.button |= PAD_TRIGGER_Z;
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}
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if (b2 & (1 << 2)) {
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pad.button |= PAD_TRIGGER_R;
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}
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if (b2 & (1 << 3)) {
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pad.button |= PAD_TRIGGER_L;
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}
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if (get_origin) {
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pad.button |= PAD_GET_ORIGIN;
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}
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pad.stickX = adapter_payload[1 + (9 * port) + 3];
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pad.stickY = adapter_payload[1 + (9 * port) + 4];
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pad.substickX = adapter_payload[1 + (9 * port) + 5];
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pad.substickY = adapter_payload[1 + (9 * port) + 6];
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pad.triggerLeft = adapter_payload[1 + (9 * port) + 7];
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pad.triggerRight = adapter_payload[1 + (9 * port) + 8];
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}
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return pad;
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}
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void PadToState(GCPadStatus pad, GCState& state) {
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// std::lock_guard lock{s_mutex};
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state.buttons.insert_or_assign(PAD_BUTTON_A, pad.button & PAD_BUTTON_A);
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state.buttons.insert_or_assign(PAD_BUTTON_B, pad.button & PAD_BUTTON_B);
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state.buttons.insert_or_assign(PAD_BUTTON_X, pad.button & PAD_BUTTON_X);
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state.buttons.insert_or_assign(PAD_BUTTON_Y, pad.button & PAD_BUTTON_Y);
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state.buttons.insert_or_assign(PAD_BUTTON_LEFT, pad.button & PAD_BUTTON_LEFT);
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state.buttons.insert_or_assign(PAD_BUTTON_RIGHT, pad.button & PAD_BUTTON_RIGHT);
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state.buttons.insert_or_assign(PAD_BUTTON_DOWN, pad.button & PAD_BUTTON_DOWN);
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state.buttons.insert_or_assign(PAD_BUTTON_UP, pad.button & PAD_BUTTON_UP);
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state.buttons.insert_or_assign(PAD_BUTTON_START, pad.button & PAD_BUTTON_START);
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state.buttons.insert_or_assign(PAD_TRIGGER_Z, pad.button & PAD_TRIGGER_Z);
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state.buttons.insert_or_assign(PAD_TRIGGER_L, pad.button & PAD_TRIGGER_L);
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state.buttons.insert_or_assign(PAD_TRIGGER_R, pad.button & PAD_TRIGGER_R);
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state.axes.insert_or_assign(STICK_X, pad.stickX);
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state.axes.insert_or_assign(STICK_Y, pad.stickY);
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state.axes.insert_or_assign(SUBSTICK_X, pad.substickX);
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state.axes.insert_or_assign(SUBSTICK_Y, pad.substickY);
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state.axes.insert_or_assign(TRIGGER_LEFT, pad.triggerLeft);
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state.axes.insert_or_assign(TRIGGER_RIGHT, pad.triggerRight);
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}
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static void Read() {
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LOG_INFO(Input, "GC Adapter Read() thread started");
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int payload_size_in;
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u8 adapter_payload[37];
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while (adapter_thread_running) {
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libusb_interrupt_transfer(usb_adapter_handle, input_endpoint, adapter_payload,
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sizeof(adapter_payload), &payload_size_in, 32);
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int payload_size = 0;
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u8 controller_payload_copy[37];
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{
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std::lock_guard<std::mutex> lk(s_mutex);
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std::copy(std::begin(adapter_payload), std::end(adapter_payload),
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std::begin(controller_payload_copy));
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payload_size = payload_size_in;
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}
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GCPadStatus pad[4];
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if (payload_size != sizeof(controller_payload_copy) ||
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controller_payload_copy[0] != LIBUSB_DT_HID) {
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LOG_ERROR(Input, "error reading payload (size: %d, type: %02x)", payload_size,
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controller_payload_copy[0]);
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} else {
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for (int i = 0; i < 4; i++)
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pad[i] = CheckStatus(i, controller_payload_copy);
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}
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for (int port = 0; port < 4; port++) {
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if (DeviceConnected(port) && configuring) {
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if (pad[port].button != PAD_GET_ORIGIN) {
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pad_queue[port].Push(pad[port]);
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}
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// Accounting for a threshold here because of some controller variance
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if (pad[port].stickX > pad[port].MAIN_STICK_CENTER_X + pad[port].THRESHOLD ||
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pad[port].stickX < pad[port].MAIN_STICK_CENTER_X - pad[port].THRESHOLD) {
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pad[port].axis_which = STICK_X;
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pad[port].axis_value = pad[port].stickX;
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pad_queue[port].Push(pad[port]);
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}
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if (pad[port].stickY > pad[port].MAIN_STICK_CENTER_Y + pad[port].THRESHOLD ||
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pad[port].stickY < pad[port].MAIN_STICK_CENTER_Y - pad[port].THRESHOLD) {
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pad[port].axis_which = STICK_Y;
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pad[port].axis_value = pad[port].stickY;
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pad_queue[port].Push(pad[port]);
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}
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if (pad[port].substickX > pad[port].C_STICK_CENTER_X + pad[port].THRESHOLD ||
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pad[port].substickX < pad[port].C_STICK_CENTER_X - pad[port].THRESHOLD) {
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pad[port].axis_which = SUBSTICK_X;
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pad[port].axis_value = pad[port].substickX;
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pad_queue[port].Push(pad[port]);
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}
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if (pad[port].substickY > pad[port].C_STICK_CENTER_Y + pad[port].THRESHOLD ||
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pad[port].substickY < pad[port].C_STICK_CENTER_Y - pad[port].THRESHOLD) {
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pad[port].axis_which = SUBSTICK_Y;
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pad[port].axis_value = pad[port].substickY;
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pad_queue[port].Push(pad[port]);
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}
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}
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PadToState(pad[port], state[port]);
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}
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std::this_thread::yield();
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}
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}
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static void ScanThreadFunc() {
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LOG_INFO(Input, "GC Adapter scanning thread started");
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while (detect_thread_running) {
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if (usb_adapter_handle == nullptr) {
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std::lock_guard<std::mutex> lk(initialization_mutex);
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Setup();
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}
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Sleep(500);
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}
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}
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void Init() {
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if (usb_adapter_handle != nullptr) {
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return;
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}
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LOG_INFO(Input, "GC Adapter Initialization started");
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current_status = NO_ADAPTER_DETECTED;
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libusb_init(&libusb_ctx);
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StartScanThread();
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}
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void StartScanThread() {
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if (detect_thread_running) {
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return;
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}
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if (!libusb_ctx) {
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return;
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}
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detect_thread_running = true;
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detect_thread = std::thread(ScanThreadFunc);
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}
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void StopScanThread() {
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detect_thread.join();
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}
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static void Setup() {
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// Reset the error status in case the adapter gets unplugged
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if (current_status < 0) {
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current_status = NO_ADAPTER_DETECTED;
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}
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for (int i = 0; i < 4; i++) {
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adapter_controllers_status[i] = ControllerTypes::CONTROLLER_NONE;
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}
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libusb_device** devs; // pointer to list of connected usb devices
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int cnt = libusb_get_device_list(libusb_ctx, &devs); // get the list of devices
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for (int i = 0; i < cnt; i++) {
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if (CheckDeviceAccess(devs[i])) {
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// GC Adapter found, registering it
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GetGCEndpoint(devs[i]);
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break;
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}
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}
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}
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static bool CheckDeviceAccess(libusb_device* device) {
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libusb_device_descriptor desc;
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int ret = libusb_get_device_descriptor(device, &desc);
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if (ret) {
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// could not acquire the descriptor, no point in trying to use it.
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LOG_ERROR(Input, "libusb_get_device_descriptor failed with error: %d", ret);
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return false;
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}
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if (desc.idVendor != 0x057e || desc.idProduct != 0x0337) {
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// This isn’t the device we are looking for.
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return false;
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}
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ret = libusb_open(device, &usb_adapter_handle);
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if (ret == LIBUSB_ERROR_ACCESS) {
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LOG_ERROR(Input, "Yuzu can not gain access to this device: ID %04X:%04X.", desc.idVendor,
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desc.idProduct);
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return false;
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}
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if (ret) {
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LOG_ERROR(Input, "libusb_open failed to open device with error = %d", ret);
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return false;
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}
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ret = libusb_kernel_driver_active(usb_adapter_handle, 0);
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if (ret == 1) {
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ret = libusb_detach_kernel_driver(usb_adapter_handle, 0);
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if (ret != 0 && ret != LIBUSB_ERROR_NOT_SUPPORTED) {
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LOG_ERROR(Input, "libusb_detach_kernel_driver failed with error = %d", ret);
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}
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}
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if (ret != 0 && ret != LIBUSB_ERROR_NOT_SUPPORTED) {
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libusb_close(usb_adapter_handle);
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usb_adapter_handle = nullptr;
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return false;
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}
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ret = libusb_claim_interface(usb_adapter_handle, 0);
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if (ret) {
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LOG_ERROR(Input, "libusb_claim_interface failed with error = %d", ret);
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libusb_close(usb_adapter_handle);
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usb_adapter_handle = nullptr;
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return false;
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}
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return true;
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}
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static void GetGCEndpoint(libusb_device* device) {
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libusb_config_descriptor* config = nullptr;
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libusb_get_config_descriptor(device, 0, &config);
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for (u8 ic = 0; ic < config->bNumInterfaces; ic++) {
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const libusb_interface* interfaceContainer = &config->interface[ic];
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for (int i = 0; i < interfaceContainer->num_altsetting; i++) {
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const libusb_interface_descriptor* interface = &interfaceContainer->altsetting[i];
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for (u8 e = 0; e < interface->bNumEndpoints; e++) {
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const libusb_endpoint_descriptor* endpoint = &interface->endpoint[e];
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if (endpoint->bEndpointAddress & LIBUSB_ENDPOINT_IN) {
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input_endpoint = endpoint->bEndpointAddress;
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}
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}
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}
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}
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adapter_thread_running = true;
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current_status = ADAPTER_DETECTED;
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adapter_input_thread = std::thread(Read); // Read input
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}
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void Shutdown() {
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StopScanThread();
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Reset();
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current_status = NO_ADAPTER_DETECTED;
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}
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static void Reset() {
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std::unique_lock<std::mutex> lock(initialization_mutex, std::defer_lock);
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if (!lock.try_lock()) {
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return;
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}
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if (current_status != ADAPTER_DETECTED) {
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return;
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}
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if (adapter_thread_running) {
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adapter_input_thread.join();
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}
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for (int i = 0; i < 4; i++) {
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adapter_controllers_status[i] = ControllerTypes::CONTROLLER_NONE;
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}
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current_status = NO_ADAPTER_DETECTED;
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if (usb_adapter_handle) {
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libusb_release_interface(usb_adapter_handle, 0);
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libusb_close(usb_adapter_handle);
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usb_adapter_handle = nullptr;
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}
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}
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bool DeviceConnected(int port) {
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return adapter_controllers_status[port] != ControllerTypes::CONTROLLER_NONE;
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}
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void ResetDeviceType(int port) {
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adapter_controllers_status[port] = ControllerTypes::CONTROLLER_NONE;
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}
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void BeginConfiguration() {
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configuring = true;
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}
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void EndConfiguration() {
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configuring = false;
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}
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} // end of namespace GCAdapter
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