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godot/platform/osx/joystick_osx.cpp

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/*************************************************************************/
/* joystick_osx.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* 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. */
/*************************************************************************/
#include "joystick_osx.h"
#include <machine/endian.h>
#define GODOT_JOY_LOOP_RUN_MODE CFSTR("GodotJoystick")
static JoystickOSX *self = NULL;
joystick::joystick() {
device_ref = NULL;
ff_device = NULL;
ff_axes = NULL;
ff_directions = NULL;
ffservice = 0;
ff_timestamp = 0;
id = 0;
ff_constant_force.lMagnitude = 10000;
ff_effect.dwDuration = 0;
ff_effect.dwSamplePeriod = 0;
ff_effect.dwGain = 10000;
ff_effect.dwFlags = FFEFF_OBJECTOFFSETS;
ff_effect.dwTriggerButton = FFEB_NOTRIGGER;
ff_effect.dwStartDelay = 0;
ff_effect.dwTriggerRepeatInterval = 0;
ff_effect.lpEnvelope = NULL;
ff_effect.cbTypeSpecificParams = sizeof(FFCONSTANTFORCE);
ff_effect.lpvTypeSpecificParams = &ff_constant_force;
ff_effect.dwSize = sizeof(ff_effect);
}
void joystick::free() {
if (device_ref) {
IOHIDDeviceUnscheduleFromRunLoop(device_ref, CFRunLoopGetCurrent(), GODOT_JOY_LOOP_RUN_MODE);
}
if (ff_device) {
FFDeviceReleaseEffect(ff_device, ff_object);
FFReleaseDevice(ff_device);
memfree(ff_axes);
memfree(ff_directions);
}
}
bool joystick::has_element(IOHIDElementCookie p_cookie, Vector<rec_element> *p_list) const {
for (int i = 0; i < p_list->size(); i++) {
if (p_cookie == p_list->get(i).cookie) {
return true;
}
}
return false;
}
int joystick::get_hid_element_state(rec_element *p_element) const {
int value = 0;
if (p_element && p_element->ref) {
IOHIDValueRef valueRef;
if (IOHIDDeviceGetValue(device_ref, p_element->ref, &valueRef) == kIOReturnSuccess) {
value = (SInt32)IOHIDValueGetIntegerValue(valueRef);
/* record min and max for auto calibration */
if (value < p_element->min) {
p_element->min = value;
}
if (value > p_element->max) {
p_element->max = value;
}
}
}
return value;
}
void joystick::add_hid_element(IOHIDElementRef p_element) {
const CFTypeID elementTypeID = p_element ? CFGetTypeID(p_element) : 0;
if (p_element && (elementTypeID == IOHIDElementGetTypeID())) {
const IOHIDElementCookie cookie = IOHIDElementGetCookie(p_element);
const uint32_t usagePage = IOHIDElementGetUsagePage(p_element);
const uint32_t usage = IOHIDElementGetUsage(p_element);
Vector<rec_element> *list = NULL;
switch (IOHIDElementGetType(p_element)) {
case kIOHIDElementTypeInput_Misc:
case kIOHIDElementTypeInput_Button:
case kIOHIDElementTypeInput_Axis: {
switch (usagePage) {
case kHIDPage_GenericDesktop:
switch (usage) {
case kHIDUsage_GD_X:
case kHIDUsage_GD_Y:
case kHIDUsage_GD_Z:
case kHIDUsage_GD_Rx:
case kHIDUsage_GD_Ry:
case kHIDUsage_GD_Rz:
case kHIDUsage_GD_Slider:
case kHIDUsage_GD_Dial:
case kHIDUsage_GD_Wheel:
if (!has_element(cookie, &axis_elements)) {
list = &axis_elements;
}
break;
case kHIDUsage_GD_Hatswitch:
if (!has_element(cookie, &hat_elements)) {
list = &hat_elements;
}
break;
case kHIDUsage_GD_DPadUp:
case kHIDUsage_GD_DPadDown:
case kHIDUsage_GD_DPadRight:
case kHIDUsage_GD_DPadLeft:
case kHIDUsage_GD_Start:
case kHIDUsage_GD_Select:
if (!has_element(cookie, &button_elements)) {
list = &button_elements;
}
break;
}
break;
case kHIDPage_Simulation:
switch (usage) {
case kHIDUsage_Sim_Rudder:
case kHIDUsage_Sim_Throttle:
if (!has_element(cookie, &axis_elements)) {
list = &axis_elements;
}
break;
default:
break;
}
break;
case kHIDPage_Button:
case kHIDPage_Consumer:
if (!has_element(cookie, &button_elements)) {
list = &button_elements;
}
break;
default:
break;
}
} break;
case kIOHIDElementTypeCollection: {
CFArrayRef array = IOHIDElementGetChildren(p_element);
if (array) {
add_hid_elements(array);
}
} break;
default:
break;
}
if (list) { /* add to list */
rec_element element;
element.ref = p_element;
element.usage = usage;
element.min = (SInt32)IOHIDElementGetLogicalMin(p_element);
element.max = (SInt32)IOHIDElementGetLogicalMax(p_element);
element.cookie = IOHIDElementGetCookie(p_element);
list->push_back(element);
list->sort_custom<rec_element::Comparator>();
}
}
}
static void hid_element_added(const void *p_value, void *p_parameter) {
joystick *joy = (joystick *)p_parameter;
joy->add_hid_element((IOHIDElementRef)p_value);
}
void joystick::add_hid_elements(CFArrayRef p_array) {
CFRange range = { 0, CFArrayGetCount(p_array) };
CFArrayApplyFunction(p_array, range, hid_element_added, this);
}
static void joystick_removed_callback(void *ctx, IOReturn result, void *sender) {
int id = (intptr_t)ctx;
self->_device_removed(id);
}
static void joystick_added_callback(void *ctx, IOReturn res, void *sender, IOHIDDeviceRef ioHIDDeviceObject) {
self->_device_added(res, ioHIDDeviceObject);
}
static bool is_joystick(IOHIDDeviceRef p_device_ref) {
CFTypeRef refCF = NULL;
int usage_page = 0;
int usage = 0;
refCF = IOHIDDeviceGetProperty(p_device_ref, CFSTR(kIOHIDPrimaryUsagePageKey));
if (refCF) {
CFNumberGetValue((CFNumberRef)refCF, kCFNumberSInt32Type, &usage_page);
}
if (usage_page != kHIDPage_GenericDesktop) {
return false;
}
refCF = IOHIDDeviceGetProperty(p_device_ref, CFSTR(kIOHIDPrimaryUsageKey));
if (refCF) {
CFNumberGetValue((CFNumberRef)refCF, kCFNumberSInt32Type, &usage);
}
if ((usage != kHIDUsage_GD_Joystick &&
usage != kHIDUsage_GD_GamePad &&
usage != kHIDUsage_GD_MultiAxisController)) {
return false;
}
return true;
}
void JoystickOSX::_device_added(IOReturn p_res, IOHIDDeviceRef p_device) {
if (p_res != kIOReturnSuccess || have_device(p_device)) {
return;
}
joystick new_joystick;
if (is_joystick(p_device)) {
configure_joystick(p_device, &new_joystick);
#if MAC_OS_X_VERSION_MIN_REQUIRED < 1060
if (IOHIDDeviceGetService != NULL) {
#endif
const io_service_t ioservice = IOHIDDeviceGetService(p_device);
if ((ioservice) && (FFIsForceFeedback(ioservice) == FF_OK) && new_joystick.config_force_feedback(ioservice)) {
new_joystick.ffservice = ioservice;
}
#if MAC_OS_X_VERSION_MIN_REQUIRED < 1060
}
#endif
device_list.push_back(new_joystick);
}
IOHIDDeviceRegisterRemovalCallback(p_device, joystick_removed_callback, (void *)(intptr_t)new_joystick.id);
IOHIDDeviceScheduleWithRunLoop(p_device, CFRunLoopGetCurrent(), GODOT_JOY_LOOP_RUN_MODE);
}
void JoystickOSX::_device_removed(int p_id) {
int device = get_joy_index(p_id);
ERR_FAIL_COND(device == -1);
input->joy_connection_changed(p_id, false, "");
device_list[device].free();
device_list.remove(device);
}
static String _hex_str(uint8_t p_byte) {
static const char *dict = "0123456789abcdef";
char ret[3];
ret[2] = 0;
ret[0] = dict[p_byte >> 4];
ret[1] = dict[p_byte & 0xF];
return ret;
}
bool JoystickOSX::configure_joystick(IOHIDDeviceRef p_device_ref, joystick *p_joy) {
CFTypeRef refCF = NULL;
p_joy->device_ref = p_device_ref;
/* get device name */
String name;
char c_name[256];
refCF = IOHIDDeviceGetProperty(p_device_ref, CFSTR(kIOHIDProductKey));
if (!refCF) {
refCF = IOHIDDeviceGetProperty(p_device_ref, CFSTR(kIOHIDManufacturerKey));
}
if ((!refCF) || (!CFStringGetCString((CFStringRef)refCF, c_name, sizeof(c_name), kCFStringEncodingUTF8))) {
name = "Unidentified Joystick";
}
name = c_name;
int id = input->get_unused_joy_id();
ERR_FAIL_COND_V(id == -1, false);
p_joy->id = id;
int vendor = 0;
refCF = IOHIDDeviceGetProperty(p_device_ref, CFSTR(kIOHIDVendorIDKey));
if (refCF) {
CFNumberGetValue((CFNumberRef)refCF, kCFNumberSInt32Type, &vendor);
}
int product_id = 0;
refCF = IOHIDDeviceGetProperty(p_device_ref, CFSTR(kIOHIDProductIDKey));
if (refCF) {
CFNumberGetValue((CFNumberRef)refCF, kCFNumberSInt32Type, &product_id);
}
if (vendor && product_id) {
char uid[128];
sprintf(uid, "%04x%08x%04x%08x", OSSwapHostToBigInt32(vendor), 0, OSSwapHostToBigInt32(product_id), 0);
input->joy_connection_changed(id, true, name, uid);
} else {
//bluetooth device
String guid = "05000000";
for (int i = 0; i < 12; i++) {
if (i < name.size())
guid += _hex_str(name[i]);
else
guid += "00";
}
input->joy_connection_changed(id, true, name, guid);
}
CFArrayRef array = NULL;
array = IOHIDDeviceCopyMatchingElements(p_device_ref, NULL, kIOHIDOptionsTypeNone);
if (array) {
p_joy->add_hid_elements(array);
CFRelease(array);
}
return true;
}
#define FF_ERR() \
{ \
if (ret != FF_OK) { \
FFReleaseDevice(ff_device); \
return false; \
} \
}
bool joystick::config_force_feedback(io_service_t p_service) {
HRESULT ret = FFCreateDevice(p_service, &ff_device);
ERR_FAIL_COND_V(ret != FF_OK, false);
ret = FFDeviceSendForceFeedbackCommand(ff_device, FFSFFC_RESET);
FF_ERR();
ret = FFDeviceSendForceFeedbackCommand(ff_device, FFSFFC_SETACTUATORSON);
FF_ERR();
if (check_ff_features()) {
ret = FFDeviceCreateEffect(ff_device, kFFEffectType_ConstantForce_ID, &ff_effect, &ff_object);
FF_ERR();
return true;
}
FFReleaseDevice(ff_device);
return false;
}
#undef FF_ERR
#define TEST_FF(ff) (features.supportedEffects & (ff))
bool joystick::check_ff_features() {
FFCAPABILITIES features;
HRESULT ret = FFDeviceGetForceFeedbackCapabilities(ff_device, &features);
if (ret == FF_OK && (features.supportedEffects & FFCAP_ET_CONSTANTFORCE)) {
uint32_t val;
ret = FFDeviceGetForceFeedbackProperty(ff_device, FFPROP_FFGAIN, &val, sizeof(val));
if (ret != FF_OK) return false;
int num_axes = features.numFfAxes;
ff_axes = (DWORD *)memalloc(sizeof(DWORD) * num_axes);
ff_directions = (LONG *)memalloc(sizeof(LONG) * num_axes);
for (int i = 0; i < num_axes; i++) {
ff_axes[i] = features.ffAxes[i];
ff_directions[i] = 0;
}
ff_effect.cAxes = num_axes;
ff_effect.rgdwAxes = ff_axes;
ff_effect.rglDirection = ff_directions;
return true;
}
return false;
}
static int process_hat_value(int p_min, int p_max, int p_value) {
int range = (p_max - p_min + 1);
int value = p_value - p_min;
int hat_value = InputDefault::HAT_MASK_CENTER;
if (range == 4) {
value *= 2;
}
switch (value) {
case 0:
hat_value = InputDefault::HAT_MASK_UP;
break;
case 1:
hat_value = InputDefault::HAT_MASK_UP | InputDefault::HAT_MASK_RIGHT;
break;
case 2:
hat_value = InputDefault::HAT_MASK_RIGHT;
break;
case 3:
hat_value = InputDefault::HAT_MASK_DOWN | InputDefault::HAT_MASK_RIGHT;
break;
case 4:
hat_value = InputDefault::HAT_MASK_DOWN;
break;
case 5:
hat_value = InputDefault::HAT_MASK_DOWN | InputDefault::HAT_MASK_LEFT;
break;
case 6:
hat_value = InputDefault::HAT_MASK_LEFT;
break;
case 7:
hat_value = InputDefault::HAT_MASK_UP | InputDefault::HAT_MASK_LEFT;
break;
default:
hat_value = InputDefault::HAT_MASK_CENTER;
break;
}
return hat_value;
}
void JoystickOSX::poll_joysticks() const {
while (CFRunLoopRunInMode(GODOT_JOY_LOOP_RUN_MODE, 0, TRUE) == kCFRunLoopRunHandledSource) {
/* no-op. Pending callbacks will fire. */
}
}
static const InputDefault::JoyAxis axis_correct(int p_value, int p_min, int p_max) {
InputDefault::JoyAxis jx;
if (p_min < 0) {
jx.min = -1;
if (p_value < 0) {
jx.value = (float)-p_value / p_min;
} else
jx.value = (float)p_value / p_max;
}
if (p_min == 0) {
jx.min = 0;
jx.value = 0.0f + (float)p_value / p_max;
}
return jx;
}
uint32_t JoystickOSX::process_joysticks(uint32_t p_last_id) {
poll_joysticks();
for (int i = 0; i < device_list.size(); i++) {
joystick &joy = device_list[i];
for (int j = 0; j < joy.axis_elements.size(); j++) {
rec_element &elem = joy.axis_elements[j];
int value = joy.get_hid_element_state(&elem);
p_last_id = input->joy_axis(p_last_id, joy.id, j, axis_correct(value, elem.min, elem.max));
}
for (int j = 0; j < joy.button_elements.size(); j++) {
int value = joy.get_hid_element_state(&joy.button_elements[j]);
p_last_id = input->joy_button(p_last_id, joy.id, j, (value >= 1));
}
for (int j = 0; j < joy.hat_elements.size(); j++) {
rec_element &elem = joy.hat_elements[j];
int value = joy.get_hid_element_state(&elem);
int hat_value = process_hat_value(elem.min, elem.max, value);
p_last_id = input->joy_hat(p_last_id, joy.id, hat_value);
}
if (joy.ffservice) {
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(joy.id, timestamp);
} else {
float gain = MAX(strength.x, strength.y);
joystick_vibration_start(joy.id, gain, duration, timestamp);
}
}
}
}
return p_last_id;
}
void JoystickOSX::joystick_vibration_start(int p_id, float p_magnitude, float p_duration, uint64_t p_timestamp) {
joystick *joy = &device_list[get_joy_index(p_id)];
joy->ff_timestamp = p_timestamp;
joy->ff_effect.dwDuration = p_duration * FF_SECONDS;
joy->ff_effect.dwGain = p_magnitude * FF_FFNOMINALMAX;
FFEffectSetParameters(joy->ff_object, &joy->ff_effect, FFEP_DURATION | FFEP_GAIN);
FFEffectStart(joy->ff_object, 1, 0);
}
void JoystickOSX::joystick_vibration_stop(int p_id, uint64_t p_timestamp) {
joystick *joy = &device_list[get_joy_index(p_id)];
joy->ff_timestamp = p_timestamp;
FFEffectStop(joy->ff_object);
}
int JoystickOSX::get_joy_index(int p_id) const {
for (int i = 0; i < device_list.size(); i++) {
if (device_list[i].id == p_id) return i;
}
return -1;
}
bool JoystickOSX::have_device(IOHIDDeviceRef p_device) const {
for (int i = 0; i < device_list.size(); i++) {
if (device_list[i].device_ref == p_device) {
return true;
}
}
return false;
}
static CFDictionaryRef create_match_dictionary(const UInt32 page, const UInt32 usage, int *okay) {
CFDictionaryRef retval = NULL;
CFNumberRef pageNumRef = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &page);
CFNumberRef usageNumRef = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &usage);
const void *keys[2] = { (void *)CFSTR(kIOHIDDeviceUsagePageKey), (void *)CFSTR(kIOHIDDeviceUsageKey) };
const void *vals[2] = { (void *)pageNumRef, (void *)usageNumRef };
if (pageNumRef && usageNumRef) {
retval = CFDictionaryCreate(kCFAllocatorDefault, keys, vals, 2, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
}
if (pageNumRef) {
CFRelease(pageNumRef);
}
if (usageNumRef) {
CFRelease(usageNumRef);
}
if (!retval) {
*okay = 0;
}
return retval;
}
void JoystickOSX::config_hid_manager(CFArrayRef p_matching_array) const {
CFRunLoopRef runloop = CFRunLoopGetCurrent();
IOReturn ret = IOHIDManagerOpen(hid_manager, kIOHIDOptionsTypeNone);
ERR_FAIL_COND(ret != kIOReturnSuccess);
IOHIDManagerSetDeviceMatchingMultiple(hid_manager, p_matching_array);
IOHIDManagerRegisterDeviceMatchingCallback(hid_manager, joystick_added_callback, NULL);
IOHIDManagerScheduleWithRunLoop(hid_manager, runloop, GODOT_JOY_LOOP_RUN_MODE);
while (CFRunLoopRunInMode(GODOT_JOY_LOOP_RUN_MODE, 0, TRUE) == kCFRunLoopRunHandledSource) {
/* no-op. Callback fires once per existing device. */
}
}
JoystickOSX::JoystickOSX() {
self = this;
input = (InputDefault *)Input::get_singleton();
int okay = 1;
const void *vals[] = {
(void *)create_match_dictionary(kHIDPage_GenericDesktop, kHIDUsage_GD_Joystick, &okay),
(void *)create_match_dictionary(kHIDPage_GenericDesktop, kHIDUsage_GD_GamePad, &okay),
(void *)create_match_dictionary(kHIDPage_GenericDesktop, kHIDUsage_GD_MultiAxisController, &okay),
};
const size_t n_elements = sizeof(vals) / sizeof(vals[0]);
CFArrayRef array = okay ? CFArrayCreate(kCFAllocatorDefault, vals, n_elements, &kCFTypeArrayCallBacks) : NULL;
for (int i = 0; i < n_elements; i++) {
if (vals[i]) {
CFRelease((CFTypeRef)vals[i]);
}
}
if (array) {
hid_manager = IOHIDManagerCreate(kCFAllocatorDefault, kIOHIDOptionsTypeNone);
if (hid_manager != NULL) {
config_hid_manager(array);
}
CFRelease(array);
}
}
JoystickOSX::~JoystickOSX() {
for (int i = 0; i < device_list.size(); i++) {
device_list[i].free();
}
IOHIDManagerUnscheduleFromRunLoop(hid_manager, CFRunLoopGetCurrent(), GODOT_JOY_LOOP_RUN_MODE);
IOHIDManagerClose(hid_manager, kIOHIDOptionsTypeNone);
CFRelease(hid_manager);
hid_manager = NULL;
}
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