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// Copyright 2014 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#pragma once
#include <algorithm>
#include <functional>
#include <mutex>
#include <thread>
#include <unordered_map>
#include "common/common_types.h"
#include "common/threadsafe_queue.h"
struct libusb_context;
struct libusb_device;
struct libusb_device_handle;
namespace GCAdapter {
enum {
PAD_USE_ORIGIN = 0x0080,
PAD_GET_ORIGIN = 0x2000,
PAD_ERR_STATUS = 0x8000,
};
enum class PadButton {
PAD_BUTTON_LEFT = 0x0001,
PAD_BUTTON_RIGHT = 0x0002,
PAD_BUTTON_DOWN = 0x0004,
PAD_BUTTON_UP = 0x0008,
PAD_TRIGGER_Z = 0x0010,
PAD_TRIGGER_R = 0x0020,
PAD_TRIGGER_L = 0x0040,
PAD_BUTTON_A = 0x0100,
PAD_BUTTON_B = 0x0200,
PAD_BUTTON_X = 0x0400,
PAD_BUTTON_Y = 0x0800,
PAD_BUTTON_START = 0x1000,
// Below is for compatibility with "AxisButton" type
PAD_STICK = 0x2000,
};
extern const std::array<PadButton, 12> PadButtonArray;
enum class PadAxes : u8 {
StickX,
StickY,
SubstickX,
SubstickY,
TriggerLeft,
TriggerRight,
Undefined,
};
struct GCPadStatus {
u16 button{}; // Or-ed PAD_BUTTON_* and PAD_TRIGGER_* bits
u8 stick_x{}; // 0 <= stick_x <= 255
u8 stick_y{}; // 0 <= stick_y <= 255
u8 substick_x{}; // 0 <= substick_x <= 255
u8 substick_y{}; // 0 <= substick_y <= 255
u8 trigger_left{}; // 0 <= trigger_left <= 255
u8 trigger_right{}; // 0 <= trigger_right <= 255
static constexpr u8 MAIN_STICK_CENTER_X = 0x80;
static constexpr u8 MAIN_STICK_CENTER_Y = 0x80;
static constexpr u8 MAIN_STICK_RADIUS = 0x7f;
static constexpr u8 C_STICK_CENTER_X = 0x80;
static constexpr u8 C_STICK_CENTER_Y = 0x80;
static constexpr u8 C_STICK_RADIUS = 0x7f;
static constexpr u8 THRESHOLD = 10;
// 256/4, at least a quarter press to count as a press. For polling mostly
static constexpr u8 TRIGGER_THRESHOLD = 64;
u8 port{};
PadAxes axis{PadAxes::Undefined};
u8 axis_value{255};
};
struct GCState {
std::unordered_map<int, bool> buttons;
std::unordered_map<int, u16> axes;
};
enum class ControllerTypes { None, Wired, Wireless };
enum {
NO_ADAPTER_DETECTED = 0,
ADAPTER_DETECTED = 1,
};
class Adapter {
public:
/// Initialize the GC Adapter capture and read sequence
Adapter();
/// Close the adapter read thread and release the adapter
~Adapter();
/// Used for polling
void BeginConfiguration();
void EndConfiguration();
std::array<Common::SPSCQueue<GCPadStatus>, 4>& GetPadQueue();
const std::array<Common::SPSCQueue<GCPadStatus>, 4>& GetPadQueue() const;
std::array<GCState, 4>& GetPadState();
const std::array<GCState, 4>& GetPadState() const;
private:
GCPadStatus GetPadStatus(int port, const std::array<u8, 37>& adapter_payload);
void PadToState(const GCPadStatus& pad, GCState& state);
void Read();
void ScanThreadFunc();
/// Begin scanning for the GC Adapter.
void StartScanThread();
/// Stop scanning for the adapter
void StopScanThread();
/// Returns true if there is a device connected to port
bool DeviceConnected(int port);
/// Resets status of device connected to port
void ResetDeviceType(int port);
/// Returns true if we successfully gain access to GC Adapter
bool CheckDeviceAccess(libusb_device* device);
/// Captures GC Adapter endpoint address,
void GetGCEndpoint(libusb_device* device);
/// For shutting down, clear all data, join all threads, release usb
void Reset();
/// For use in initialization, querying devices to find the adapter
void Setup();
int current_status = NO_ADAPTER_DETECTED;
libusb_device_handle* usb_adapter_handle = nullptr;
std::array<ControllerTypes, 4> adapter_controllers_status{};
std::mutex s_mutex;
std::thread adapter_input_thread;
bool adapter_thread_running;
std::mutex initialization_mutex;
std::thread detect_thread;
bool detect_thread_running = false;
libusb_context* libusb_ctx;
u8 input_endpoint = 0;
u8 output_endpoint = 0;
bool configuring = false;
std::array<Common::SPSCQueue<GCPadStatus>, 4> pad_queue;
std::array<GCState, 4> state;
};
} // namespace GCAdapter
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