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virtualx-engine/platform/windows/joystick.cpp
Andreas Haas 8c06da0d49
Better handling of joypad device IDs. 
Now InputDefault is responsible for giving out joypad device IDs to the platform, instead of each platform handling this itself.
This makes it possible for c++ modules to add their own "custom" gamepad devices, without the risk of messing up events in case the user also has regular gamepads attached (using the OS code).
For now, it's implemented for the main desktop platforms.
Possible targets for future work: android, uwp, javascript
2017-03-26 00:12:11 +01:00

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/*************************************************************************/
/* joystick.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
//author: Andreas Haas <hondres, liugam3@gmail.com>
#include "joystick.h"
#include <oleauto.h>
#include <wbemidl.h>
#include <iostream>
#ifndef __GNUC__
#define __builtin_bswap32 _byteswap_ulong
#endif
DWORD WINAPI _xinput_get_state(DWORD dwUserIndex, XINPUT_STATE *pState) {
return ERROR_DEVICE_NOT_CONNECTED;
}
DWORD WINAPI _xinput_set_state(DWORD dwUserIndex, XINPUT_VIBRATION *pVibration) {
return ERROR_DEVICE_NOT_CONNECTED;
}
joystick_windows::joystick_windows() {
}
joystick_windows::joystick_windows(InputDefault *_input, HWND *hwnd) {
input = _input;
hWnd = hwnd;
joystick_count = 0;
dinput = NULL;
xinput_dll = NULL;
xinput_get_state = NULL;
xinput_set_state = NULL;
load_xinput();
for (int i = 0; i < JOYSTICKS_MAX; i++)
attached_joysticks[i] = false;
HRESULT result;
result = DirectInput8Create(GetModuleHandle(NULL), DIRECTINPUT_VERSION, IID_IDirectInput8, (void **)&dinput, NULL);
if (FAILED(result)) {
printf("failed init DINPUT: %ld\n", result);
}
probe_joysticks();
}
joystick_windows::~joystick_windows() {
close_joystick();
dinput->Release();
unload_xinput();
}
bool joystick_windows::have_device(const GUID &p_guid) {
for (int i = 0; i < JOYSTICKS_MAX; i++) {
if (d_joysticks[i].guid == p_guid) {
d_joysticks[i].confirmed = true;
return true;
}
}
return false;
}
// adapted from SDL2, works a lot better than the MSDN version
bool joystick_windows::is_xinput_device(const GUID *p_guid) {
static GUID IID_ValveStreamingGamepad = { MAKELONG(0x28DE, 0x11FF), 0x0000, 0x0000, { 0x00, 0x00, 0x50, 0x49, 0x44, 0x56, 0x49, 0x44 } };
static GUID IID_X360WiredGamepad = { MAKELONG(0x045E, 0x02A1), 0x0000, 0x0000, { 0x00, 0x00, 0x50, 0x49, 0x44, 0x56, 0x49, 0x44 } };
static GUID IID_X360WirelessGamepad = { MAKELONG(0x045E, 0x028E), 0x0000, 0x0000, { 0x00, 0x00, 0x50, 0x49, 0x44, 0x56, 0x49, 0x44 } };
if (p_guid == &IID_ValveStreamingGamepad || p_guid == &IID_X360WiredGamepad || p_guid == &IID_X360WirelessGamepad)
return true;
PRAWINPUTDEVICELIST dev_list = NULL;
unsigned int dev_list_count = 0;
if (GetRawInputDeviceList(NULL, &dev_list_count, sizeof(RAWINPUTDEVICELIST)) == -1) {
return false;
}
dev_list = (PRAWINPUTDEVICELIST)malloc(sizeof(RAWINPUTDEVICELIST) * dev_list_count);
if (!dev_list) return false;
if (GetRawInputDeviceList(dev_list, &dev_list_count, sizeof(RAWINPUTDEVICELIST)) == -1) {
free(dev_list);
return false;
}
for (int i = 0; i < dev_list_count; i++) {
RID_DEVICE_INFO rdi;
char dev_name[128];
UINT rdiSize = sizeof(rdi);
UINT nameSize = sizeof(dev_name);
rdi.cbSize = rdiSize;
if ((dev_list[i].dwType == RIM_TYPEHID) &&
(GetRawInputDeviceInfoA(dev_list[i].hDevice, RIDI_DEVICEINFO, &rdi, &rdiSize) != (UINT)-1) &&
(MAKELONG(rdi.hid.dwVendorId, rdi.hid.dwProductId) == (LONG)p_guid->Data1) &&
(GetRawInputDeviceInfoA(dev_list[i].hDevice, RIDI_DEVICENAME, &dev_name, &nameSize) != (UINT)-1) &&
(strstr(dev_name, "IG_") != NULL)) {
free(dev_list);
return true;
}
}
free(dev_list);
return false;
}
bool joystick_windows::setup_dinput_joystick(const DIDEVICEINSTANCE *instance) {
HRESULT hr;
int num = input->get_unused_joy_id();
if (have_device(instance->guidInstance) || num == -1)
return false;
d_joysticks[joystick_count] = dinput_gamepad();
dinput_gamepad *joy = &d_joysticks[joystick_count];
const DWORD devtype = (instance->dwDevType & 0xFF);
if ((devtype != DI8DEVTYPE_JOYSTICK) && (devtype != DI8DEVTYPE_GAMEPAD) && (devtype != DI8DEVTYPE_1STPERSON)) {
//printf("ignore device %s, type %x\n", instance->tszProductName, devtype);
return false;
}
hr = dinput->CreateDevice(instance->guidInstance, &joy->di_joy, NULL);
if (FAILED(hr)) {
//std::wcout << "failed to create device: " << instance->tszProductName << std::endl;
return false;
}
const GUID &guid = instance->guidProduct;
char uid[128];
sprintf(uid, "%08lx%04hx%04hx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx",
__builtin_bswap32(guid.Data1), guid.Data2, guid.Data3,
guid.Data4[0], guid.Data4[1], guid.Data4[2], guid.Data4[3],
guid.Data4[4], guid.Data4[5], guid.Data4[6], guid.Data4[7]);
id_to_change = joystick_count;
joy->di_joy->SetDataFormat(&c_dfDIJoystick2);
joy->di_joy->SetCooperativeLevel(*hWnd, DISCL_FOREGROUND);
joy->di_joy->EnumObjects(objectsCallback, this, NULL);
joy->joy_axis.sort();
joy->guid = instance->guidInstance;
input->joy_connection_changed(num, true, instance->tszProductName, uid);
joy->attached = true;
joy->id = num;
attached_joysticks[num] = true;
joy->confirmed = true;
joystick_count++;
return true;
}
void joystick_windows::setup_joystick_object(const DIDEVICEOBJECTINSTANCE *ob, int p_joy_id) {
if (ob->dwType & DIDFT_AXIS) {
HRESULT res;
DIPROPRANGE prop_range;
DIPROPDWORD dilong;
DWORD ofs;
if (ob->guidType == GUID_XAxis)
ofs = DIJOFS_X;
else if (ob->guidType == GUID_YAxis)
ofs = DIJOFS_Y;
else if (ob->guidType == GUID_ZAxis)
ofs = DIJOFS_Z;
else if (ob->guidType == GUID_RxAxis)
ofs = DIJOFS_RX;
else if (ob->guidType == GUID_RyAxis)
ofs = DIJOFS_RY;
else if (ob->guidType == GUID_RzAxis)
ofs = DIJOFS_RZ;
else if (ob->guidType == GUID_Slider)
ofs = DIJOFS_SLIDER(0);
else
return;
prop_range.diph.dwSize = sizeof(DIPROPRANGE);
prop_range.diph.dwHeaderSize = sizeof(DIPROPHEADER);
prop_range.diph.dwObj = ob->dwType;
prop_range.diph.dwHow = DIPH_BYID;
prop_range.lMin = -MAX_JOY_AXIS;
prop_range.lMax = +MAX_JOY_AXIS;
dinput_gamepad &joy = d_joysticks[p_joy_id];
res = IDirectInputDevice8_SetProperty(joy.di_joy, DIPROP_RANGE, &prop_range.diph);
if (FAILED(res))
return;
dilong.diph.dwSize = sizeof(dilong);
dilong.diph.dwHeaderSize = sizeof(dilong.diph);
dilong.diph.dwObj = ob->dwType;
dilong.diph.dwHow = DIPH_BYID;
dilong.dwData = 0;
res = IDirectInputDevice8_SetProperty(joy.di_joy, DIPROP_DEADZONE, &dilong.diph);
if (FAILED(res))
return;
joy.joy_axis.push_back(ofs);
}
}
BOOL CALLBACK joystick_windows::enumCallback(const DIDEVICEINSTANCE *instance, void *pContext) {
joystick_windows *self = (joystick_windows *)pContext;
if (self->is_xinput_device(&instance->guidProduct)) {
return DIENUM_CONTINUE;
}
self->setup_dinput_joystick(instance);
return DIENUM_CONTINUE;
}
BOOL CALLBACK joystick_windows::objectsCallback(const DIDEVICEOBJECTINSTANCE *instance, void *context) {
joystick_windows *self = (joystick_windows *)context;
self->setup_joystick_object(instance, self->id_to_change);
return DIENUM_CONTINUE;
}
void joystick_windows::close_joystick(int id) {
if (id == -1) {
for (int i = 0; i < JOYSTICKS_MAX; i++) {
close_joystick(i);
}
return;
}
if (!d_joysticks[id].attached) return;
d_joysticks[id].di_joy->Unacquire();
d_joysticks[id].di_joy->Release();
d_joysticks[id].attached = false;
attached_joysticks[d_joysticks[id].id] = false;
d_joysticks[id].guid.Data1 = d_joysticks[id].guid.Data2 = d_joysticks[id].guid.Data3 = 0;
input->joy_connection_changed(d_joysticks[id].id, false, "");
joystick_count--;
}
void joystick_windows::probe_joysticks() {
DWORD dwResult;
for (DWORD i = 0; i < XUSER_MAX_COUNT; i++) {
ZeroMemory(&x_joysticks[i].state, sizeof(XINPUT_STATE));
dwResult = xinput_get_state(i, &x_joysticks[i].state);
if (dwResult == ERROR_SUCCESS) {
int id = input->get_unused_joy_id();
if (id != -1 && !x_joysticks[i].attached) {
x_joysticks[i].attached = true;
x_joysticks[i].id = id;
x_joysticks[i].ff_timestamp = 0;
x_joysticks[i].ff_end_timestamp = 0;
x_joysticks[i].vibrating = false;
attached_joysticks[id] = true;
input->joy_connection_changed(id, true, "XInput Gamepad", "__XINPUT_DEVICE__");
}
} else if (x_joysticks[i].attached) {
x_joysticks[i].attached = false;
attached_joysticks[x_joysticks[i].id] = false;
input->joy_connection_changed(x_joysticks[i].id, false, "");
}
}
for (int i = 0; i < joystick_count; i++) {
d_joysticks[i].confirmed = false;
}
dinput->EnumDevices(DI8DEVCLASS_GAMECTRL, enumCallback, this, DIEDFL_ATTACHEDONLY);
for (int i = 0; i < joystick_count; i++) {
if (!d_joysticks[i].confirmed) {
close_joystick(i);
}
}
}
unsigned int joystick_windows::process_joysticks(unsigned int p_last_id) {
HRESULT hr;
for (int i = 0; i < XUSER_MAX_COUNT; i++) {
xinput_gamepad &joy = x_joysticks[i];
if (!joy.attached) {
continue;
}
ZeroMemory(&joy.state, sizeof(XINPUT_STATE));
xinput_get_state(i, &joy.state);
if (joy.state.dwPacketNumber != joy.last_packet) {
int button_mask = XINPUT_GAMEPAD_DPAD_UP;
for (int i = 0; i <= 16; i++) {
p_last_id = input->joy_button(p_last_id, joy.id, i, joy.state.Gamepad.wButtons & button_mask);
button_mask = button_mask * 2;
}
p_last_id = input->joy_axis(p_last_id, joy.id, JOY_AXIS_0, axis_correct(joy.state.Gamepad.sThumbLX, true));
p_last_id = input->joy_axis(p_last_id, joy.id, JOY_AXIS_1, axis_correct(joy.state.Gamepad.sThumbLY, true, false, true));
p_last_id = input->joy_axis(p_last_id, joy.id, JOY_AXIS_2, axis_correct(joy.state.Gamepad.sThumbRX, true));
p_last_id = input->joy_axis(p_last_id, joy.id, JOY_AXIS_3, axis_correct(joy.state.Gamepad.sThumbRY, true, false, true));
p_last_id = input->joy_axis(p_last_id, joy.id, JOY_AXIS_4, axis_correct(joy.state.Gamepad.bLeftTrigger, true, true));
p_last_id = input->joy_axis(p_last_id, joy.id, JOY_AXIS_5, axis_correct(joy.state.Gamepad.bRightTrigger, true, true));
joy.last_packet = joy.state.dwPacketNumber;
}
uint64_t timestamp = input->get_joy_vibration_timestamp(joy.id);
if (timestamp > joy.ff_timestamp) {
Vector2 strength = input->get_joy_vibration_strength(joy.id);
float duration = input->get_joy_vibration_duration(joy.id);
if (strength.x == 0 && strength.y == 0) {
joystick_vibration_stop_xinput(i, timestamp);
} else {
joystick_vibration_start_xinput(i, strength.x, strength.y, duration, timestamp);
}
} else if (joy.vibrating && joy.ff_end_timestamp != 0) {
uint64_t current_time = OS::get_singleton()->get_ticks_usec();
if (current_time >= joy.ff_end_timestamp)
joystick_vibration_stop_xinput(i, current_time);
}
}
for (int i = 0; i < JOYSTICKS_MAX; i++) {
dinput_gamepad *joy = &d_joysticks[i];
if (!joy->attached)
continue;
DIJOYSTATE2 js;
hr = joy->di_joy->Poll();
if (hr == DIERR_INPUTLOST || hr == DIERR_NOTACQUIRED) {
IDirectInputDevice8_Acquire(joy->di_joy);
joy->di_joy->Poll();
}
if (FAILED(hr = joy->di_joy->GetDeviceState(sizeof(DIJOYSTATE2), &js))) {
//printf("failed to read joy #%d\n", i);
continue;
}
p_last_id = post_hat(p_last_id, joy->id, js.rgdwPOV[0]);
for (int j = 0; j < 128; j++) {
if (js.rgbButtons[j] & 0x80) {
if (!joy->last_buttons[j]) {
p_last_id = input->joy_button(p_last_id, joy->id, j, true);
joy->last_buttons[j] = true;
}
} else {
if (joy->last_buttons[j]) {
p_last_id = input->joy_button(p_last_id, joy->id, j, false);
joy->last_buttons[j] = false;
}
}
}
// on mingw, these constants are not constants
int count = 6;
int axes[] = { DIJOFS_X, DIJOFS_Y, DIJOFS_Z, DIJOFS_RX, DIJOFS_RY, DIJOFS_RZ };
int values[] = { js.lX, js.lY, js.lZ, js.lRx, js.lRy, js.lRz };
for (int j = 0; j < joy->joy_axis.size(); j++) {
for (int k = 0; k < count; k++) {
if (joy->joy_axis[j] == axes[k]) {
p_last_id = input->joy_axis(p_last_id, joy->id, j, axis_correct(values[k]));
break;
};
};
};
}
return p_last_id;
}
unsigned int joystick_windows::post_hat(unsigned int p_last_id, int p_device, DWORD p_dpad) {
int dpad_val = 0;
if (p_dpad == -1) {
dpad_val = InputDefault::HAT_MASK_CENTER;
}
if (p_dpad == 0) {
dpad_val = InputDefault::HAT_MASK_UP;
} else if (p_dpad == 4500) {
dpad_val = (InputDefault::HAT_MASK_UP | InputDefault::HAT_MASK_RIGHT);
} else if (p_dpad == 9000) {
dpad_val = InputDefault::HAT_MASK_RIGHT;
} else if (p_dpad == 13500) {
dpad_val = (InputDefault::HAT_MASK_RIGHT | InputDefault::HAT_MASK_DOWN);
} else if (p_dpad == 18000) {
dpad_val = InputDefault::HAT_MASK_DOWN;
} else if (p_dpad == 22500) {
dpad_val = (InputDefault::HAT_MASK_DOWN | InputDefault::HAT_MASK_LEFT);
} else if (p_dpad == 27000) {
dpad_val = InputDefault::HAT_MASK_LEFT;
} else if (p_dpad == 31500) {
dpad_val = (InputDefault::HAT_MASK_LEFT | InputDefault::HAT_MASK_UP);
}
return input->joy_hat(p_last_id, p_device, dpad_val);
};
InputDefault::JoyAxis joystick_windows::axis_correct(int p_val, bool p_xinput, bool p_trigger, bool p_negate) const {
InputDefault::JoyAxis jx;
if (Math::abs(p_val) < MIN_JOY_AXIS) {
jx.min = p_trigger ? 0 : -1;
jx.value = 0.0f;
return jx;
}
if (p_xinput) {
if (p_trigger) {
jx.min = 0;
jx.value = (float)p_val / MAX_TRIGGER;
return jx;
}
jx.min = -1;
if (p_val < 0) {
jx.value = (float)p_val / MAX_JOY_AXIS;
} else {
jx.value = (float)p_val / (MAX_JOY_AXIS - 1);
}
if (p_negate) {
jx.value = -jx.value;
}
return jx;
}
jx.min = -1;
jx.value = (float)p_val / MAX_JOY_AXIS;
return jx;
}
void joystick_windows::joystick_vibration_start_xinput(int p_device, float p_weak_magnitude, float p_strong_magnitude, float p_duration, uint64_t p_timestamp) {
xinput_gamepad &joy = x_joysticks[p_device];
if (joy.attached) {
XINPUT_VIBRATION effect;
effect.wLeftMotorSpeed = (65535 * p_strong_magnitude);
effect.wRightMotorSpeed = (65535 * p_weak_magnitude);
if (xinput_set_state(p_device, &effect) == ERROR_SUCCESS) {
joy.ff_timestamp = p_timestamp;
joy.ff_end_timestamp = p_duration == 0 ? 0 : p_timestamp + (uint64_t)(p_duration * 1000000.0);
joy.vibrating = true;
}
}
}
void joystick_windows::joystick_vibration_stop_xinput(int p_device, uint64_t p_timestamp) {
xinput_gamepad &joy = x_joysticks[p_device];
if (joy.attached) {
XINPUT_VIBRATION effect;
effect.wLeftMotorSpeed = 0;
effect.wRightMotorSpeed = 0;
if (xinput_set_state(p_device, &effect) == ERROR_SUCCESS) {
joy.ff_timestamp = p_timestamp;
joy.vibrating = false;
}
}
}
void joystick_windows::load_xinput() {
xinput_get_state = &_xinput_get_state;
xinput_set_state = &_xinput_set_state;
xinput_dll = LoadLibrary("XInput1_4.dll");
if (!xinput_dll) {
xinput_dll = LoadLibrary("XInput1_3.dll");
if (!xinput_dll) {
xinput_dll = LoadLibrary("XInput9_1_0.dll");
}
}
if (!xinput_dll) {
if (OS::get_singleton()->is_stdout_verbose()) {
print_line("Could not find XInput, using DirectInput only");
}
return;
}
XInputGetState_t func = (XInputGetState_t)GetProcAddress((HMODULE)xinput_dll, "XInputGetState");
XInputSetState_t set_func = (XInputSetState_t)GetProcAddress((HMODULE)xinput_dll, "XInputSetState");
if (!func || !set_func) {
unload_xinput();
return;
}
xinput_get_state = func;
xinput_set_state = set_func;
}
void joystick_windows::unload_xinput() {
if (xinput_dll) {
FreeLibrary((HMODULE)xinput_dll);
}
}
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