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sunshine-sdk/src/platform/windows/input.cpp

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/**
* @file src/platform/windows/input.cpp
* @brief todo
*/
#include <windows.h>
#include <cmath>
#include <ViGEm/Client.h>
#include "misc.h"
#include "src/config.h"
#include "src/main.h"
#include "src/platform/common.h"
namespace platf {
using namespace std::literals;
thread_local HDESK _lastKnownInputDesktop = nullptr;
constexpr touch_port_t target_touch_port {
0, 0,
65535, 65535
};
using client_t = util::safe_ptr<_VIGEM_CLIENT_T, vigem_free>;
using target_t = util::safe_ptr<_VIGEM_TARGET_T, vigem_target_free>;
void CALLBACK
x360_notify(
client_t::pointer client,
target_t::pointer target,
std::uint8_t largeMotor, std::uint8_t smallMotor,
std::uint8_t /* led_number */,
void *userdata);
void CALLBACK
ds4_notify(
client_t::pointer client,
target_t::pointer target,
std::uint8_t largeMotor, std::uint8_t smallMotor,
DS4_LIGHTBAR_COLOR /* led_color */,
void *userdata);
struct gamepad_context_t {
target_t gp;
feedback_queue_t feedback_queue;
union {
XUSB_REPORT x360;
DS4_REPORT_EX ds4;
} report;
gamepad_feedback_msg_t last_rumble;
gamepad_feedback_msg_t last_rgb_led;
};
constexpr float EARTH_G = 9.80665f;
#define MPS2_TO_DS4_ACCEL(x) (int32_t)(((x) / EARTH_G) * 8192)
#define DPS_TO_DS4_GYRO(x) (int32_t)((x) * (1024 / 64))
#define APPLY_CALIBRATION(val, bias, scale) (int32_t)(((float) (val) + (bias)) / (scale))
constexpr DS4_TOUCH ds4_touch_unused = {
.bPacketCounter = 0,
.bIsUpTrackingNum1 = 0x80,
.bTouchData1 = { 0x00, 0x00, 0x00 },
.bIsUpTrackingNum2 = 0x80,
.bTouchData2 = { 0x00, 0x00, 0x00 },
};
// See https://github.com/ViGEm/ViGEmBus/blob/22835473d17fbf0c4d4bb2f2d42fd692b6e44df4/sys/Ds4Pdo.cpp#L153-L164
constexpr DS4_REPORT_EX ds4_report_init_ex = {
{ { .bThumbLX = 0x80,
.bThumbLY = 0x80,
.bThumbRX = 0x80,
.bThumbRY = 0x80,
.wButtons = DS4_BUTTON_DPAD_NONE,
.bSpecial = 0,
.bTriggerL = 0,
.bTriggerR = 0,
.wTimestamp = 0,
.bBatteryLvl = 99,
.wGyroX = 0,
.wGyroY = 0,
.wGyroZ = 0,
.wAccelX = 0,
.wAccelY = 0,
.wAccelZ = 0,
._bUnknown1 = { 0x00, 0x00, 0x00, 0x00, 0x00 },
.bBatteryLvlSpecial = 0x10, // Wired
._bUnknown2 = { 0x00, 0x00 },
.bTouchPacketsN = 0,
.sCurrentTouch = ds4_touch_unused,
.sPreviousTouch = { ds4_touch_unused, ds4_touch_unused } } }
};
/**
* @brief Updates the DS4 input report with the provided motion data.
* @details Acceleration is in m/s^2 and gyro is in deg/s.
* @param gamepad The gamepad to update.
* @param motion_type The type of motion data.
* @param x X component of motion.
* @param y Y component of motion.
* @param z Z component of motion.
*/
static void
ds4_update_motion(gamepad_context_t &gamepad, uint8_t motion_type, float x, float y, float z) {
auto &report = gamepad.report.ds4.Report;
// Use int32 to process this data, so we can clamp if needed.
int32_t intX, intY, intZ;
switch (motion_type) {
case LI_MOTION_TYPE_ACCEL:
// Convert to the DS4's accelerometer scale
intX = MPS2_TO_DS4_ACCEL(x);
intY = MPS2_TO_DS4_ACCEL(y);
intZ = MPS2_TO_DS4_ACCEL(z);
// Apply the inverse of ViGEmBus's calibration data
intX = APPLY_CALIBRATION(intX, -297, 1.010796f);
intY = APPLY_CALIBRATION(intY, -42, 1.014614f);
intZ = APPLY_CALIBRATION(intZ, -512, 1.024768f);
break;
case LI_MOTION_TYPE_GYRO:
// Convert to the DS4's gyro scale
intX = DPS_TO_DS4_GYRO(x);
intY = DPS_TO_DS4_GYRO(y);
intZ = DPS_TO_DS4_GYRO(z);
// Apply the inverse of ViGEmBus's calibration data
intX = APPLY_CALIBRATION(intX, 1, 0.977596f);
intY = APPLY_CALIBRATION(intY, 0, 0.972370f);
intZ = APPLY_CALIBRATION(intZ, 0, 0.971550f);
break;
default:
return;
}
// Clamp the values to the range of the data type
intX = std::clamp(intX, INT16_MIN, INT16_MAX);
intY = std::clamp(intY, INT16_MIN, INT16_MAX);
intZ = std::clamp(intZ, INT16_MIN, INT16_MAX);
// Populate the report
switch (motion_type) {
case LI_MOTION_TYPE_ACCEL:
report.wAccelX = (int16_t) intX;
report.wAccelY = (int16_t) intY;
report.wAccelZ = (int16_t) intZ;
break;
case LI_MOTION_TYPE_GYRO:
report.wGyroX = (int16_t) intX;
report.wGyroY = (int16_t) intY;
report.wGyroZ = (int16_t) intZ;
break;
default:
return;
}
}
class vigem_t {
public:
int
init() {
VIGEM_ERROR status;
client.reset(vigem_alloc());
status = vigem_connect(client.get());
if (!VIGEM_SUCCESS(status)) {
BOOST_LOG(warning) << "Couldn't setup connection to ViGEm for gamepad support ["sv << util::hex(status).to_string_view() << ']';
return -1;
}
gamepads.resize(MAX_GAMEPADS);
return 0;
}
/**
* @brief Attaches a new gamepad.
* @param nr The gamepad index.
* @param feedback_queue The queue for posting messages back to the client.
* @param gp_type The type of gamepad.
* @return 0 on success.
*/
int
alloc_gamepad_internal(int nr, feedback_queue_t &feedback_queue, VIGEM_TARGET_TYPE gp_type) {
auto &gamepad = gamepads[nr];
assert(!gamepad.gp);
if (gp_type == Xbox360Wired) {
gamepad.gp.reset(vigem_target_x360_alloc());
XUSB_REPORT_INIT(&gamepad.report.x360);
}
else {
gamepad.gp.reset(vigem_target_ds4_alloc());
// There is no equivalent DS4_REPORT_EX_INIT()
gamepad.report.ds4 = ds4_report_init_ex;
// Set initial accelerometer and gyro state
ds4_update_motion(gamepad, LI_MOTION_TYPE_ACCEL, 0.0f, EARTH_G, 0.0f);
ds4_update_motion(gamepad, LI_MOTION_TYPE_GYRO, 0.0f, 0.0f, 0.0f);
}
auto status = vigem_target_add(client.get(), gamepad.gp.get());
if (!VIGEM_SUCCESS(status)) {
BOOST_LOG(error) << "Couldn't add Gamepad to ViGEm connection ["sv << util::hex(status).to_string_view() << ']';
return -1;
}
gamepad.feedback_queue = std::move(feedback_queue);
if (gp_type == Xbox360Wired) {
status = vigem_target_x360_register_notification(client.get(), gamepad.gp.get(), x360_notify, this);
}
else {
status = vigem_target_ds4_register_notification(client.get(), gamepad.gp.get(), ds4_notify, this);
}
if (!VIGEM_SUCCESS(status)) {
BOOST_LOG(warning) << "Couldn't register notifications for rumble support ["sv << util::hex(status).to_string_view() << ']';
}
return 0;
}
/**
* @brief Detaches the specified gamepad
* @param nr The gamepad.
*/
void
free_target(int nr) {
auto &gamepad = gamepads[nr];
if (gamepad.gp && vigem_target_is_attached(gamepad.gp.get())) {
auto status = vigem_target_remove(client.get(), gamepad.gp.get());
if (!VIGEM_SUCCESS(status)) {
BOOST_LOG(warning) << "Couldn't detach gamepad from ViGEm ["sv << util::hex(status).to_string_view() << ']';
}
}
gamepad.gp.reset();
}
/**
* @brief Pass rumble data back to the client.
* @param target The gamepad.
* @param largeMotor The large motor.
* @param smallMotor The small motor.
*/
void
rumble(target_t::pointer target, std::uint8_t largeMotor, std::uint8_t smallMotor) {
for (int x = 0; x < gamepads.size(); ++x) {
auto &gamepad = gamepads[x];
if (gamepad.gp.get() == target) {
// Convert from 8-bit to 16-bit values
uint16_t normalizedLargeMotor = largeMotor << 8;
uint16_t normalizedSmallMotor = smallMotor << 8;
// Don't resend duplicate rumble data
if (normalizedSmallMotor != gamepad.last_rumble.data.rumble.highfreq ||
normalizedLargeMotor != gamepad.last_rumble.data.rumble.lowfreq) {
gamepad_feedback_msg_t msg = gamepad_feedback_msg_t::make_rumble(x, normalizedLargeMotor, normalizedSmallMotor);
gamepad.feedback_queue->raise(msg);
gamepad.last_rumble = msg;
}
return;
}
}
}
/**
* @brief Pass RGB LED data back to the client.
* @param target The gamepad.
* @param r The red channel.
* @param g The red channel.
* @param b The red channel.
*/
void
set_rgb_led(target_t::pointer target, std::uint8_t r, std::uint8_t g, std::uint8_t b) {
for (int x = 0; x < gamepads.size(); ++x) {
auto &gamepad = gamepads[x];
if (gamepad.gp.get() == target) {
// Don't resend duplicate RGB data
if (r != gamepad.last_rgb_led.data.rgb_led.r || g != gamepad.last_rgb_led.data.rgb_led.g || b != gamepad.last_rgb_led.data.rgb_led.b) {
gamepad_feedback_msg_t msg = gamepad_feedback_msg_t::make_rgb_led(x, r, g, b);
gamepad.feedback_queue->raise(msg);
gamepad.last_rgb_led = msg;
}
return;
}
}
}
/**
* @brief vigem_t destructor.
*/
~vigem_t() {
if (client) {
for (auto &gamepad : gamepads) {
if (gamepad.gp && vigem_target_is_attached(gamepad.gp.get())) {
auto status = vigem_target_remove(client.get(), gamepad.gp.get());
if (!VIGEM_SUCCESS(status)) {
BOOST_LOG(warning) << "Couldn't detach gamepad from ViGEm ["sv << util::hex(status).to_string_view() << ']';
}
}
}
vigem_disconnect(client.get());
}
}
std::vector<gamepad_context_t> gamepads;
client_t client;
};
void CALLBACK
x360_notify(
client_t::pointer client,
target_t::pointer target,
std::uint8_t largeMotor, std::uint8_t smallMotor,
std::uint8_t /* led_number */,
void *userdata) {
BOOST_LOG(debug)
<< "largeMotor: "sv << (int) largeMotor << std::endl
<< "smallMotor: "sv << (int) smallMotor;
task_pool.push(&vigem_t::rumble, (vigem_t *) userdata, target, largeMotor, smallMotor);
}
void CALLBACK
ds4_notify(
client_t::pointer client,
target_t::pointer target,
std::uint8_t largeMotor, std::uint8_t smallMotor,
DS4_LIGHTBAR_COLOR led_color,
void *userdata) {
BOOST_LOG(debug)
<< "largeMotor: "sv << (int) largeMotor << std::endl
<< "smallMotor: "sv << (int) smallMotor << std::endl
<< "LED: "sv << util::hex(led_color.Red).to_string_view() << ' '
<< util::hex(led_color.Green).to_string_view() << ' '
<< util::hex(led_color.Blue).to_string_view() << std::endl;
task_pool.push(&vigem_t::rumble, (vigem_t *) userdata, target, largeMotor, smallMotor);
task_pool.push(&vigem_t::set_rgb_led, (vigem_t *) userdata, target, led_color.Red, led_color.Green, led_color.Blue);
}
struct input_raw_t {
~input_raw_t() {
delete vigem;
}
vigem_t *vigem;
HKL keyboard_layout;
HKL active_layout;
};
input_t
input() {
input_t result { new input_raw_t {} };
auto &raw = *(input_raw_t *) result.get();
raw.vigem = new vigem_t {};
if (raw.vigem->init()) {
delete raw.vigem;
raw.vigem = nullptr;
}
// Moonlight currently sends keys normalized to the US English layout.
// We need to use that layout when converting to scancodes.
raw.keyboard_layout = LoadKeyboardLayoutA("00000409", 0);
if (!raw.keyboard_layout || LOWORD(raw.keyboard_layout) != 0x409) {
BOOST_LOG(warning) << "Unable to load US English keyboard layout for scancode translation. Keyboard input may not work in games."sv;
raw.keyboard_layout = NULL;
}
// Activate layout for current process only
raw.active_layout = ActivateKeyboardLayout(raw.keyboard_layout, KLF_SETFORPROCESS);
if (!raw.active_layout) {
BOOST_LOG(warning) << "Unable to activate US English keyboard layout for scancode translation. Keyboard input may not work in games."sv;
raw.keyboard_layout = NULL;
}
return result;
}
void
send_input(INPUT &i) {
retry:
auto send = SendInput(1, &i, sizeof(INPUT));
if (send != 1) {
auto hDesk = syncThreadDesktop();
if (_lastKnownInputDesktop != hDesk) {
_lastKnownInputDesktop = hDesk;
goto retry;
}
BOOST_LOG(error) << "Couldn't send input"sv;
}
}
void
abs_mouse(input_t &input, const touch_port_t &touch_port, float x, float y) {
INPUT i {};
i.type = INPUT_MOUSE;
auto &mi = i.mi;
mi.dwFlags =
MOUSEEVENTF_MOVE |
MOUSEEVENTF_ABSOLUTE |
// MOUSEEVENTF_VIRTUALDESK maps to the entirety of the desktop rather than the primary desktop
MOUSEEVENTF_VIRTUALDESK;
auto scaled_x = std::lround((x + touch_port.offset_x) * ((float) target_touch_port.width / (float) touch_port.width));
auto scaled_y = std::lround((y + touch_port.offset_y) * ((float) target_touch_port.height / (float) touch_port.height));
mi.dx = scaled_x;
mi.dy = scaled_y;
send_input(i);
}
void
move_mouse(input_t &input, int deltaX, int deltaY) {
INPUT i {};
i.type = INPUT_MOUSE;
auto &mi = i.mi;
mi.dwFlags = MOUSEEVENTF_MOVE;
mi.dx = deltaX;
mi.dy = deltaY;
send_input(i);
}
void
button_mouse(input_t &input, int button, bool release) {
INPUT i {};
i.type = INPUT_MOUSE;
auto &mi = i.mi;
int mouse_button;
if (button == 1) {
mi.dwFlags = release ? MOUSEEVENTF_LEFTUP : MOUSEEVENTF_LEFTDOWN;
mouse_button = VK_LBUTTON;
}
else if (button == 2) {
mi.dwFlags = release ? MOUSEEVENTF_MIDDLEUP : MOUSEEVENTF_MIDDLEDOWN;
mouse_button = VK_MBUTTON;
}
else if (button == 3) {
mi.dwFlags = release ? MOUSEEVENTF_RIGHTUP : MOUSEEVENTF_RIGHTDOWN;
mouse_button = VK_RBUTTON;
}
else if (button == 4) {
mi.dwFlags = release ? MOUSEEVENTF_XUP : MOUSEEVENTF_XDOWN;
mi.mouseData = XBUTTON1;
mouse_button = VK_XBUTTON1;
}
else {
mi.dwFlags = release ? MOUSEEVENTF_XUP : MOUSEEVENTF_XDOWN;
mi.mouseData = XBUTTON2;
mouse_button = VK_XBUTTON2;
}
send_input(i);
}
void
scroll(input_t &input, int distance) {
INPUT i {};
i.type = INPUT_MOUSE;
auto &mi = i.mi;
mi.dwFlags = MOUSEEVENTF_WHEEL;
mi.mouseData = distance;
send_input(i);
}
void
hscroll(input_t &input, int distance) {
INPUT i {};
i.type = INPUT_MOUSE;
auto &mi = i.mi;
mi.dwFlags = MOUSEEVENTF_HWHEEL;
mi.mouseData = distance;
send_input(i);
}
void
keyboard(input_t &input, uint16_t modcode, bool release, uint8_t flags) {
auto raw = (input_raw_t *) input.get();
INPUT i {};
i.type = INPUT_KEYBOARD;
auto &ki = i.ki;
// If the client did not normalize this VK code to a US English layout, we can't accurately convert it to a scancode.
bool send_scancode = !(flags & SS_KBE_FLAG_NON_NORMALIZED) || config::input.always_send_scancodes;
if (send_scancode && modcode != VK_LWIN && modcode != VK_RWIN && modcode != VK_PAUSE && raw->keyboard_layout != NULL) {
// For some reason, MapVirtualKey(VK_LWIN, MAPVK_VK_TO_VSC) doesn't seem to work :/
ki.wScan = MapVirtualKeyEx(modcode, MAPVK_VK_TO_VSC, raw->keyboard_layout);
}
// If we can map this to a scancode, send it as a scancode for maximum game compatibility.
if (ki.wScan) {
ki.dwFlags = KEYEVENTF_SCANCODE;
}
else {
// If there is no scancode mapping or it's non-normalized, send it as a regular VK event.
ki.wVk = modcode;
}
// https://docs.microsoft.com/en-us/windows/win32/inputdev/about-keyboard-input#keystroke-message-flags
switch (modcode) {
case VK_RMENU:
case VK_RCONTROL:
case VK_INSERT:
case VK_DELETE:
case VK_HOME:
case VK_END:
case VK_PRIOR:
case VK_NEXT:
case VK_UP:
case VK_DOWN:
case VK_LEFT:
case VK_RIGHT:
case VK_DIVIDE:
case VK_APPS:
ki.dwFlags |= KEYEVENTF_EXTENDEDKEY;
break;
default:
break;
}
if (release) {
ki.dwFlags |= KEYEVENTF_KEYUP;
}
send_input(i);
}
void
unicode(input_t &input, char *utf8, int size) {
// We can do no worse than one UTF-16 character per byte of UTF-8
WCHAR wide[size];
int chars = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, utf8, size, wide, size);
if (chars <= 0) {
return;
}
// Send all key down events
for (int i = 0; i < chars; i++) {
INPUT input {};
input.type = INPUT_KEYBOARD;
input.ki.wScan = wide[i];
input.ki.dwFlags = KEYEVENTF_UNICODE;
send_input(input);
}
// Send all key up events
for (int i = 0; i < chars; i++) {
INPUT input {};
input.type = INPUT_KEYBOARD;
input.ki.wScan = wide[i];
input.ki.dwFlags = KEYEVENTF_UNICODE | KEYEVENTF_KEYUP;
send_input(input);
}
}
/**
* @brief Creates a new virtual gamepad.
* @param input The input context.
* @param nr The assigned controller number.
* @param metadata Controller metadata from client (empty if none provided).
* @param feedback_queue The queue for posting messages back to the client.
* @return 0 on success.
*/
int
alloc_gamepad(input_t &input, int nr, const gamepad_arrival_t &metadata, feedback_queue_t feedback_queue) {
auto raw = (input_raw_t *) input.get();
if (!raw->vigem) {
return 0;
}
VIGEM_TARGET_TYPE selectedGamepadType;
if (config::input.gamepad == "x360"sv) {
BOOST_LOG(info) << "Gamepad " << nr << " will be Xbox 360 controller (manual selection)"sv;
selectedGamepadType = Xbox360Wired;
}
else if (config::input.gamepad == "ps4"sv || config::input.gamepad == "ds4"sv) {
BOOST_LOG(info) << "Gamepad " << nr << " will be DualShock 4 controller (manual selection)"sv;
selectedGamepadType = DualShock4Wired;
}
else if (metadata.type == LI_CTYPE_PS) {
BOOST_LOG(info) << "Gamepad " << nr << " will be DualShock 4 controller (auto-selected by client-reported type)"sv;
selectedGamepadType = DualShock4Wired;
}
else if (metadata.type == LI_CTYPE_XBOX) {
BOOST_LOG(info) << "Gamepad " << nr << " will be Xbox 360 controller (auto-selected by client-reported type)"sv;
selectedGamepadType = Xbox360Wired;
}
else if (metadata.capabilities & (LI_CCAP_ACCEL | LI_CCAP_GYRO)) {
BOOST_LOG(info) << "Gamepad " << nr << " will be DualShock 4 controller (auto-selected by motion sensor presence)"sv;
selectedGamepadType = DualShock4Wired;
}
else if (metadata.capabilities & LI_CCAP_TOUCHPAD) {
BOOST_LOG(info) << "Gamepad " << nr << " will be DualShock 4 controller (auto-selected by touchpad presence)"sv;
selectedGamepadType = DualShock4Wired;
}
else {
BOOST_LOG(info) << "Gamepad " << nr << " will be Xbox 360 controller (default)"sv;
selectedGamepadType = Xbox360Wired;
}
return raw->vigem->alloc_gamepad_internal(nr, feedback_queue, selectedGamepadType);
}
void
free_gamepad(input_t &input, int nr) {
auto raw = (input_raw_t *) input.get();
if (!raw->vigem) {
return;
}
raw->vigem->free_target(nr);
}
/**
* @brief Converts the standard button flags into X360 format.
* @param gamepad_state The gamepad button/axis state sent from the client.
* @return XUSB_BUTTON flags.
*/
static XUSB_BUTTON
x360_buttons(const gamepad_state_t &gamepad_state) {
int buttons {};
auto flags = gamepad_state.buttonFlags;
// clang-format off
if(flags & DPAD_UP) buttons |= XUSB_GAMEPAD_DPAD_UP;
if(flags & DPAD_DOWN) buttons |= XUSB_GAMEPAD_DPAD_DOWN;
if(flags & DPAD_LEFT) buttons |= XUSB_GAMEPAD_DPAD_LEFT;
if(flags & DPAD_RIGHT) buttons |= XUSB_GAMEPAD_DPAD_RIGHT;
if(flags & START) buttons |= XUSB_GAMEPAD_START;
if(flags & BACK) buttons |= XUSB_GAMEPAD_BACK;
if(flags & LEFT_STICK) buttons |= XUSB_GAMEPAD_LEFT_THUMB;
if(flags & RIGHT_STICK) buttons |= XUSB_GAMEPAD_RIGHT_THUMB;
if(flags & LEFT_BUTTON) buttons |= XUSB_GAMEPAD_LEFT_SHOULDER;
if(flags & RIGHT_BUTTON) buttons |= XUSB_GAMEPAD_RIGHT_SHOULDER;
if(flags & HOME) buttons |= XUSB_GAMEPAD_GUIDE;
if(flags & A) buttons |= XUSB_GAMEPAD_A;
if(flags & B) buttons |= XUSB_GAMEPAD_B;
if(flags & X) buttons |= XUSB_GAMEPAD_X;
if(flags & Y) buttons |= XUSB_GAMEPAD_Y;
// clang-format on
return (XUSB_BUTTON) buttons;
}
/**
* @brief Updates the X360 input report with the provided gamepad state.
* @param gamepad The gamepad to update.
* @param gamepad_state The gamepad button/axis state sent from the client.
*/
static void
x360_update_state(gamepad_context_t &gamepad, const gamepad_state_t &gamepad_state) {
auto &report = gamepad.report.x360;
report.wButtons = x360_buttons(gamepad_state);
report.bLeftTrigger = gamepad_state.lt;
report.bRightTrigger = gamepad_state.rt;
report.sThumbLX = gamepad_state.lsX;
report.sThumbLY = gamepad_state.lsY;
report.sThumbRX = gamepad_state.rsX;
report.sThumbRY = gamepad_state.rsY;
}
static DS4_DPAD_DIRECTIONS
ds4_dpad(const gamepad_state_t &gamepad_state) {
auto flags = gamepad_state.buttonFlags;
if (flags & DPAD_UP) {
if (flags & DPAD_RIGHT) {
return DS4_BUTTON_DPAD_NORTHEAST;
}
else if (flags & DPAD_LEFT) {
return DS4_BUTTON_DPAD_NORTHWEST;
}
else {
return DS4_BUTTON_DPAD_NORTH;
}
}
else if (flags & DPAD_DOWN) {
if (flags & DPAD_RIGHT) {
return DS4_BUTTON_DPAD_SOUTHEAST;
}
else if (flags & DPAD_LEFT) {
return DS4_BUTTON_DPAD_SOUTHWEST;
}
else {
return DS4_BUTTON_DPAD_SOUTH;
}
}
else if (flags & DPAD_RIGHT) {
return DS4_BUTTON_DPAD_EAST;
}
else if (flags & DPAD_LEFT) {
return DS4_BUTTON_DPAD_WEST;
}
return DS4_BUTTON_DPAD_NONE;
}
/**
* @brief Converts the standard button flags into DS4 format.
* @param gamepad_state The gamepad button/axis state sent from the client.
* @return DS4_BUTTONS flags.
*/
static DS4_BUTTONS
ds4_buttons(const gamepad_state_t &gamepad_state) {
int buttons {};
auto flags = gamepad_state.buttonFlags;
// clang-format off
if(flags & LEFT_STICK) buttons |= DS4_BUTTON_THUMB_LEFT;
if(flags & RIGHT_STICK) buttons |= DS4_BUTTON_THUMB_RIGHT;
if(flags & LEFT_BUTTON) buttons |= DS4_BUTTON_SHOULDER_LEFT;
if(flags & RIGHT_BUTTON) buttons |= DS4_BUTTON_SHOULDER_RIGHT;
if(flags & START) buttons |= DS4_BUTTON_OPTIONS;
if(flags & BACK) buttons |= DS4_BUTTON_SHARE;
if(flags & A) buttons |= DS4_BUTTON_CROSS;
if(flags & B) buttons |= DS4_BUTTON_CIRCLE;
if(flags & X) buttons |= DS4_BUTTON_SQUARE;
if(flags & Y) buttons |= DS4_BUTTON_TRIANGLE;
if(gamepad_state.lt > 0) buttons |= DS4_BUTTON_TRIGGER_LEFT;
if(gamepad_state.rt > 0) buttons |= DS4_BUTTON_TRIGGER_RIGHT;
// clang-format on
return (DS4_BUTTONS) buttons;
}
static DS4_SPECIAL_BUTTONS
ds4_special_buttons(const gamepad_state_t &gamepad_state) {
int buttons {};
if (gamepad_state.buttonFlags & HOME) buttons |= DS4_SPECIAL_BUTTON_PS;
// Allow either PS4/PS5 clickpad button or Xbox Series X share button to activate DS4 clickpad
if (gamepad_state.buttonFlags & (TOUCHPAD_BUTTON | MISC_BUTTON)) buttons |= DS4_SPECIAL_BUTTON_TOUCHPAD;
return (DS4_SPECIAL_BUTTONS) buttons;
}
static std::uint8_t
to_ds4_triggerX(std::int16_t v) {
return (v + std::numeric_limits<std::uint16_t>::max() / 2 + 1) / 257;
}
static std::uint8_t
to_ds4_triggerY(std::int16_t v) {
auto new_v = -((std::numeric_limits<std::uint16_t>::max() / 2 + v - 1)) / 257;
return new_v == 0 ? 0xFF : (std::uint8_t) new_v;
}
/**
* @brief Updates the DS4 input report with the provided gamepad state.
* @param gamepad The gamepad to update.
* @param gamepad_state The gamepad button/axis state sent from the client.
*/
static void
ds4_update_state(gamepad_context_t &gamepad, const gamepad_state_t &gamepad_state) {
auto &report = gamepad.report.ds4.Report;
report.wButtons = ds4_buttons(gamepad_state) | ds4_dpad(gamepad_state);
report.bSpecial = ds4_special_buttons(gamepad_state);
report.bTriggerL = gamepad_state.lt;
report.bTriggerR = gamepad_state.rt;
report.bThumbLX = to_ds4_triggerX(gamepad_state.lsX);
report.bThumbLY = to_ds4_triggerY(gamepad_state.lsY);
report.bThumbRX = to_ds4_triggerX(gamepad_state.rsX);
report.bThumbRY = to_ds4_triggerY(gamepad_state.rsY);
}
/**
* @brief Updates virtual gamepad with the provided gamepad state.
* @param input The input context.
* @param nr The gamepad index to update.
* @param gamepad_state The gamepad button/axis state sent from the client.
*/
void
gamepad(input_t &input, int nr, const gamepad_state_t &gamepad_state) {
auto vigem = ((input_raw_t *) input.get())->vigem;
// If there is no gamepad support
if (!vigem) {
return;
}
auto &gamepad = vigem->gamepads[nr];
VIGEM_ERROR status;
if (vigem_target_get_type(gamepad.gp.get()) == Xbox360Wired) {
x360_update_state(gamepad, gamepad_state);
status = vigem_target_x360_update(vigem->client.get(), gamepad.gp.get(), gamepad.report.x360);
}
else {
ds4_update_state(gamepad, gamepad_state);
status = vigem_target_ds4_update_ex(vigem->client.get(), gamepad.gp.get(), gamepad.report.ds4);
}
if (!VIGEM_SUCCESS(status)) {
BOOST_LOG(warning) << "Couldn't send gamepad input to ViGEm ["sv << util::hex(status).to_string_view() << ']';
}
}
/**
* @brief Sends a gamepad touch event to the OS.
* @param input The input context.
* @param touch The touch event.
*/
void
gamepad_touch(input_t &input, const gamepad_touch_t &touch) {
// Unimplemented feature - platform_caps::controller_touch
}
/**
* @brief Sends a gamepad motion event to the OS.
* @param input The input context.
* @param motion The motion event.
*/
void
gamepad_motion(input_t &input, const gamepad_motion_t &motion) {
// Unimplemented
}
/**
* @brief Sends a gamepad battery event to the OS.
* @param input The input context.
* @param battery The battery event.
*/
void
gamepad_battery(input_t &input, const gamepad_battery_t &battery) {
// Unimplemented
}
void
freeInput(void *p) {
auto input = (input_raw_t *) p;
delete input;
}
/**
* @brief Gets the supported gamepads for this platform backend.
* @return Vector of gamepad type strings.
*/
std::vector<std::string_view> &
supported_gamepads() {
// ds4 == ps4
static std::vector<std::string_view> gps {
"auto"sv, "x360"sv, "ds4"sv, "ps4"sv
};
return gps;
}
/**
* @brief Returns the supported platform capabilities to advertise to the client.
* @return Capability flags.
*/
platform_caps::caps_t
get_capabilities() {
return 0;
}
} // namespace platf
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