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dolphin/Source/Core/InputCommon/GCAdapter.cpp

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// Copyright 2014 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include <algorithm>
#include <libusb.h>
#include <mutex>
#include "Common/Flag.h"
#include "Common/Logging/Log.h"
#include "Common/Thread.h"
#include "Core/ConfigManager.h"
#include "Core/Core.h"
#include "Core/CoreTiming.h"
#include "Core/HW/SI.h"
#include "Core/HW/SystemTimers.h"
#include "Core/NetPlayProto.h"
#include "InputCommon/GCAdapter.h"
#include "InputCommon/GCPadStatus.h"
namespace GCAdapter
{
static bool CheckDeviceAccess(libusb_device* device);
static void AddGCAdapter(libusb_device* device);
static void ResetRumbleLockNeeded();
static void Reset();
static void Setup();
static bool s_detected = false;
static libusb_device_handle* s_handle = nullptr;
static u8 s_controller_type[MAX_SI_CHANNELS] = {
ControllerTypes::CONTROLLER_NONE, ControllerTypes::CONTROLLER_NONE,
ControllerTypes::CONTROLLER_NONE, ControllerTypes::CONTROLLER_NONE};
static u8 s_controller_rumble[4];
static std::mutex s_mutex;
static u8 s_controller_payload[37];
static u8 s_controller_payload_swap[37];
static std::atomic<int> s_controller_payload_size = {0};
static std::thread s_adapter_thread;
static Common::Flag s_adapter_thread_running;
static std::mutex s_init_mutex;
static std::thread s_adapter_detect_thread;
static Common::Flag s_adapter_detect_thread_running;
static std::function<void(void)> s_detect_callback;
static bool s_libusb_driver_not_supported = false;
static libusb_context* s_libusb_context = nullptr;
static bool s_libusb_hotplug_enabled = false;
#if defined(LIBUSB_API_VERSION) && LIBUSB_API_VERSION >= 0x01000102
static libusb_hotplug_callback_handle s_hotplug_handle;
#endif
static u8 s_endpoint_in = 0;
static u8 s_endpoint_out = 0;
static u64 s_last_init = 0;
static void Read()
{
int payload_size = 0;
while (s_adapter_thread_running.IsSet())
{
libusb_interrupt_transfer(s_handle, s_endpoint_in, s_controller_payload_swap,
sizeof(s_controller_payload_swap), &payload_size, 16);
{
std::lock_guard<std::mutex> lk(s_mutex);
std::swap(s_controller_payload_swap, s_controller_payload);
s_controller_payload_size.store(payload_size);
}
Common::YieldCPU();
}
}
#if defined(LIBUSB_API_VERSION) && LIBUSB_API_VERSION >= 0x01000102
static int HotplugCallback(libusb_context* ctx, libusb_device* dev, libusb_hotplug_event event,
void* user_data)
{
if (event == LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED)
{
if (s_handle == nullptr && CheckDeviceAccess(dev))
{
std::lock_guard<std::mutex> lk(s_init_mutex);
AddGCAdapter(dev);
}
}
else if (event == LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT)
{
if (s_handle != nullptr && libusb_get_device(s_handle) == dev)
Reset();
}
return 0;
}
#endif
static void ScanThreadFunc()
{
Common::SetCurrentThreadName("GC Adapter Scanning Thread");
NOTICE_LOG(SERIALINTERFACE, "GC Adapter scanning thread started");
#if defined(LIBUSB_API_VERSION) && LIBUSB_API_VERSION >= 0x01000102
s_libusb_hotplug_enabled = libusb_has_capability(LIBUSB_CAP_HAS_HOTPLUG) != 0;
if (s_libusb_hotplug_enabled)
{
if (libusb_hotplug_register_callback(
s_libusb_context, (libusb_hotplug_event)(LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED |
LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT),
LIBUSB_HOTPLUG_ENUMERATE, 0x057e, 0x0337, LIBUSB_HOTPLUG_MATCH_ANY, HotplugCallback,
nullptr, &s_hotplug_handle) != LIBUSB_SUCCESS)
s_libusb_hotplug_enabled = false;
if (s_libusb_hotplug_enabled)
NOTICE_LOG(SERIALINTERFACE, "Using libUSB hotplug detection");
}
#endif
while (s_adapter_detect_thread_running.IsSet())
{
if (s_libusb_hotplug_enabled)
{
static timeval tv = {0, 500000};
libusb_handle_events_timeout(s_libusb_context, &tv);
}
else
{
if (s_handle == nullptr)
{
std::lock_guard<std::mutex> lk(s_init_mutex);
Setup();
if (s_detected && s_detect_callback != nullptr)
s_detect_callback();
}
Common::SleepCurrentThread(500);
}
}
NOTICE_LOG(SERIALINTERFACE, "GC Adapter scanning thread stopped");
}
void SetAdapterCallback(std::function<void(void)> func)
{
s_detect_callback = func;
}
void Init()
{
if (s_handle != nullptr)
return;
if (Core::GetState() != Core::CORE_UNINITIALIZED)
{
if ((CoreTiming::GetTicks() - s_last_init) < SystemTimers::GetTicksPerSecond())
return;
s_last_init = CoreTiming::GetTicks();
}
s_libusb_driver_not_supported = false;
int ret = libusb_init(&s_libusb_context);
if (ret)
{
ERROR_LOG(SERIALINTERFACE, "libusb_init failed with error: %d", ret);
s_libusb_driver_not_supported = true;
Shutdown();
}
else
{
if (UseAdapter())
StartScanThread();
}
}
void StartScanThread()
{
if (s_adapter_detect_thread_running.IsSet())
return;
s_adapter_detect_thread_running.Set(true);
s_adapter_detect_thread = std::thread(ScanThreadFunc);
}
void StopScanThread()
{
if (s_adapter_detect_thread_running.TestAndClear())
{
s_adapter_detect_thread.join();
}
}
static void Setup()
{
libusb_device** list;
ssize_t cnt = libusb_get_device_list(s_libusb_context, &list);
for (int i = 0; i < MAX_SI_CHANNELS; i++)
{
s_controller_type[i] = ControllerTypes::CONTROLLER_NONE;
s_controller_rumble[i] = 0;
}
for (int d = 0; d < cnt; d++)
{
libusb_device* device = list[d];
if (CheckDeviceAccess(device))
{
// Only connect to a single adapter in case the user has multiple connected
AddGCAdapter(device);
break;
}
}
libusb_free_device_list(list, 1);
}
static bool CheckDeviceAccess(libusb_device* device)
{
int ret;
libusb_device_descriptor desc;
int dRet = libusb_get_device_descriptor(device, &desc);
if (dRet)
{
// could not acquire the descriptor, no point in trying to use it.
ERROR_LOG(SERIALINTERFACE, "libusb_get_device_descriptor failed with error: %d", dRet);
return false;
}
if (desc.idVendor == 0x057e && desc.idProduct == 0x0337)
{
NOTICE_LOG(SERIALINTERFACE, "Found GC Adapter with Vendor: %X Product: %X Devnum: %d",
desc.idVendor, desc.idProduct, 1);
u8 bus = libusb_get_bus_number(device);
u8 port = libusb_get_device_address(device);
ret = libusb_open(device, &s_handle);
if (ret)
{
if (ret == LIBUSB_ERROR_ACCESS)
{
if (dRet)
{
ERROR_LOG(SERIALINTERFACE, "Dolphin does not have access to this device: Bus %03d Device "
"%03d: ID ????:???? (couldn't get id).",
bus, port);
}
else
{
ERROR_LOG(
SERIALINTERFACE,
"Dolphin does not have access to this device: Bus %03d Device %03d: ID %04X:%04X.",
bus, port, desc.idVendor, desc.idProduct);
}
}
else
{
ERROR_LOG(SERIALINTERFACE, "libusb_open failed to open device with error = %d", ret);
if (ret == LIBUSB_ERROR_NOT_SUPPORTED)
s_libusb_driver_not_supported = true;
}
return false;
}
else if ((ret = libusb_kernel_driver_active(s_handle, 0)) == 1)
{
if ((ret = libusb_detach_kernel_driver(s_handle, 0)) && ret != LIBUSB_ERROR_NOT_SUPPORTED)
{
ERROR_LOG(SERIALINTERFACE, "libusb_detach_kernel_driver failed with error: %d", ret);
}
}
// this split is needed so that we don't avoid claiming the interface when
// detaching the kernel driver is successful
if (ret != 0 && ret != LIBUSB_ERROR_NOT_SUPPORTED)
{
return false;
}
else if ((ret = libusb_claim_interface(s_handle, 0)))
{
ERROR_LOG(SERIALINTERFACE, "libusb_claim_interface failed with error: %d", ret);
}
else
{
return true;
}
}
return false;
}
static void AddGCAdapter(libusb_device* device)
{
libusb_config_descriptor* config = nullptr;
libusb_get_config_descriptor(device, 0, &config);
for (u8 ic = 0; ic < config->bNumInterfaces; ic++)
{
const libusb_interface* interfaceContainer = &config->interface[ic];
for (int i = 0; i < interfaceContainer->num_altsetting; i++)
{
const libusb_interface_descriptor* interface = &interfaceContainer->altsetting[i];
for (u8 e = 0; e < interface->bNumEndpoints; e++)
{
const libusb_endpoint_descriptor* endpoint = &interface->endpoint[e];
if (endpoint->bEndpointAddress & LIBUSB_ENDPOINT_IN)
s_endpoint_in = endpoint->bEndpointAddress;
else
s_endpoint_out = endpoint->bEndpointAddress;
}
}
}
int tmp = 0;
unsigned char payload = 0x13;
libusb_interrupt_transfer(s_handle, s_endpoint_out, &payload, sizeof(payload), &tmp, 16);
s_adapter_thread_running.Set(true);
s_adapter_thread = std::thread(Read);
s_detected = true;
if (s_detect_callback != nullptr)
s_detect_callback();
ResetRumbleLockNeeded();
}
void Shutdown()
{
StopScanThread();
#if defined(LIBUSB_API_VERSION) && LIBUSB_API_VERSION >= 0x01000102
if (s_libusb_hotplug_enabled)
libusb_hotplug_deregister_callback(s_libusb_context, s_hotplug_handle);
#endif
Reset();
if (s_libusb_context)
{
libusb_exit(s_libusb_context);
s_libusb_context = nullptr;
}
s_libusb_driver_not_supported = false;
}
static void Reset()
{
std::unique_lock<std::mutex> lock(s_init_mutex, std::defer_lock);
if (!lock.try_lock())
return;
if (!s_detected)
return;
if (s_adapter_thread_running.TestAndClear())
{
s_adapter_thread.join();
}
for (int i = 0; i < MAX_SI_CHANNELS; i++)
s_controller_type[i] = ControllerTypes::CONTROLLER_NONE;
s_detected = false;
if (s_handle)
{
libusb_release_interface(s_handle, 0);
libusb_close(s_handle);
s_handle = nullptr;
}
if (s_detect_callback != nullptr)
s_detect_callback();
NOTICE_LOG(SERIALINTERFACE, "GC Adapter detached");
}
GCPadStatus Input(int chan)
{
if (!UseAdapter())
return {};
if (s_handle == nullptr || !s_detected)
return {};
int payload_size = 0;
u8 controller_payload_copy[37];
{
std::lock_guard<std::mutex> lk(s_mutex);
std::copy(std::begin(s_controller_payload), std::end(s_controller_payload),
std::begin(controller_payload_copy));
payload_size = s_controller_payload_size.load();
}
GCPadStatus pad = {};
if (payload_size != sizeof(controller_payload_copy) ||
controller_payload_copy[0] != LIBUSB_DT_HID)
{
ERROR_LOG(SERIALINTERFACE, "error reading payload (size: %d, type: %02x)", payload_size,
controller_payload_copy[0]);
Reset();
}
else
{
bool get_origin = false;
u8 type = controller_payload_copy[1 + (9 * chan)] >> 4;
if (type != ControllerTypes::CONTROLLER_NONE &&
s_controller_type[chan] == ControllerTypes::CONTROLLER_NONE)
{
NOTICE_LOG(SERIALINTERFACE, "New device connected to Port %d of Type: %02x", chan + 1,
controller_payload_copy[1 + (9 * chan)]);
get_origin = true;
}
s_controller_type[chan] = type;
if (s_controller_type[chan] != ControllerTypes::CONTROLLER_NONE)
{
u8 b1 = controller_payload_copy[1 + (9 * chan) + 1];
u8 b2 = controller_payload_copy[1 + (9 * chan) + 2];
if (b1 & (1 << 0))
pad.button |= PAD_BUTTON_A;
if (b1 & (1 << 1))
pad.button |= PAD_BUTTON_B;
if (b1 & (1 << 2))
pad.button |= PAD_BUTTON_X;
if (b1 & (1 << 3))
pad.button |= PAD_BUTTON_Y;
if (b1 & (1 << 4))
pad.button |= PAD_BUTTON_LEFT;
if (b1 & (1 << 5))
pad.button |= PAD_BUTTON_RIGHT;
if (b1 & (1 << 6))
pad.button |= PAD_BUTTON_DOWN;
if (b1 & (1 << 7))
pad.button |= PAD_BUTTON_UP;
if (b2 & (1 << 0))
pad.button |= PAD_BUTTON_START;
if (b2 & (1 << 1))
pad.button |= PAD_TRIGGER_Z;
if (b2 & (1 << 2))
pad.button |= PAD_TRIGGER_R;
if (b2 & (1 << 3))
pad.button |= PAD_TRIGGER_L;
if (get_origin)
pad.button |= PAD_GET_ORIGIN;
pad.stickX = controller_payload_copy[1 + (9 * chan) + 3];
pad.stickY = controller_payload_copy[1 + (9 * chan) + 4];
pad.substickX = controller_payload_copy[1 + (9 * chan) + 5];
pad.substickY = controller_payload_copy[1 + (9 * chan) + 6];
pad.triggerLeft = controller_payload_copy[1 + (9 * chan) + 7];
pad.triggerRight = controller_payload_copy[1 + (9 * chan) + 8];
}
else if (!Core::g_want_determinism)
{
// This is a hack to prevent a desync due to SI devices
// being different and returning different values.
// The corresponding code in DeviceGCAdapter has the same check
pad.button = PAD_ERR_STATUS;
}
}
return pad;
}
bool DeviceConnected(int chan)
{
return s_controller_type[chan] != ControllerTypes::CONTROLLER_NONE;
}
bool UseAdapter()
{
return SConfig::GetInstance().m_SIDevice[0] == SIDEVICE_WIIU_ADAPTER ||
SConfig::GetInstance().m_SIDevice[1] == SIDEVICE_WIIU_ADAPTER ||
SConfig::GetInstance().m_SIDevice[2] == SIDEVICE_WIIU_ADAPTER ||
SConfig::GetInstance().m_SIDevice[3] == SIDEVICE_WIIU_ADAPTER;
}
void ResetRumble()
{
std::unique_lock<std::mutex> lock(s_init_mutex, std::defer_lock);
if (!lock.try_lock())
return;
ResetRumbleLockNeeded();
}
// Needs to be called when s_init_mutex is locked in order to avoid
// being called while the libusb state is being reset
static void ResetRumbleLockNeeded()
{
if (!UseAdapter() || (s_handle == nullptr || !s_detected))
{
return;
}
std::fill(std::begin(s_controller_rumble), std::end(s_controller_rumble), 0);
unsigned char rumble[5] = {0x11, s_controller_rumble[0], s_controller_rumble[1],
s_controller_rumble[2], s_controller_rumble[3]};
int size = 0;
libusb_interrupt_transfer(s_handle, s_endpoint_out, rumble, sizeof(rumble), &size, 16);
INFO_LOG(SERIALINTERFACE, "Rumble state reset");
}
void Output(int chan, u8 rumble_command)
{
if (s_handle == nullptr || !UseAdapter() || !SConfig::GetInstance().m_AdapterRumble[chan])
return;
// Skip over rumble commands if it has not changed or the controller is wireless
if (rumble_command != s_controller_rumble[chan] &&
s_controller_type[chan] != ControllerTypes::CONTROLLER_WIRELESS)
{
s_controller_rumble[chan] = rumble_command;
unsigned char rumble[5] = {0x11, s_controller_rumble[0], s_controller_rumble[1],
s_controller_rumble[2], s_controller_rumble[3]};
int size = 0;
libusb_interrupt_transfer(s_handle, s_endpoint_out, rumble, sizeof(rumble), &size, 16);
// Netplay sends invalid data which results in size = 0x00. Ignore it.
if (size != 0x05 && size != 0x00)
{
ERROR_LOG(SERIALINTERFACE, "error writing rumble (size: %d)", size);
Reset();
}
}
}
bool IsDetected()
{
return s_detected;
}
bool IsDriverDetected()
{
return !s_libusb_driver_not_supported;
}
} // end of namespace GCAdapter
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