753 lines
25 KiB
Objective-C
Executable File
753 lines
25 KiB
Objective-C
Executable File
/*
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Joypad support is based on a stripped-down version of SDL's Darwin implementation
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of the Joystick API, under the following license:
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*/
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include <AppKit/AppKit.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <IOKit/hid/IOHIDLib.h>
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#include "GBJoystickListener.h"
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typedef signed SDL_JoystickID;
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typedef struct _SDL_Joystick SDL_Joystick;
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typedef struct _SDL_JoystickAxisInfo
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{
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int16_t initial_value; /* Initial axis state */
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int16_t value; /* Current axis state */
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int16_t zero; /* Zero point on the axis (-32768 for triggers) */
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bool has_initial_value; /* Whether we've seen a value on the axis yet */
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bool sent_initial_value; /* Whether we've sent the initial axis value */
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} SDL_JoystickAxisInfo;
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struct _SDL_Joystick
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{
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SDL_JoystickID instance_id; /* Device instance, monotonically increasing from 0 */
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char *name; /* Joystick name - system dependent */
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int naxes; /* Number of axis controls on the joystick */
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SDL_JoystickAxisInfo *axes;
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int nbuttons; /* Number of buttons on the joystick */
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uint8_t *buttons; /* Current button states */
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int nhats;
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uint8_t *hats;
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struct joystick_hwdata *hwdata; /* Driver dependent information */
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int ref_count; /* Reference count for multiple opens */
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bool is_game_controller;
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bool force_recentering; /* SDL_TRUE if this device needs to have its state reset to 0 */
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struct _SDL_Joystick *next; /* pointer to next joystick we have allocated */
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};
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typedef struct {
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uint8_t data[16];
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} SDL_JoystickGUID;
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struct recElement
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{
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IOHIDElementRef elementRef;
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IOHIDElementCookie cookie;
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uint32_t usagePage, usage; /* HID usage */
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SInt32 min; /* reported min value possible */
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SInt32 max; /* reported max value possible */
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/* runtime variables used for auto-calibration */
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SInt32 minReport; /* min returned value */
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SInt32 maxReport; /* max returned value */
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struct recElement *pNext; /* next element in list */
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};
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typedef struct recElement recElement;
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struct joystick_hwdata
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{
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IOHIDDeviceRef deviceRef; /* HIDManager device handle */
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io_service_t ffservice; /* Interface for force feedback, 0 = no ff */
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char product[256]; /* name of product */
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uint32_t usage; /* usage page from IOUSBHID Parser.h which defines general usage */
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uint32_t usagePage; /* usage within above page from IOUSBHID Parser.h which defines specific usage */
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int axes; /* number of axis (calculated, not reported by device) */
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int buttons; /* number of buttons (calculated, not reported by device) */
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int hats;
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int elements; /* number of total elements (should be total of above) (calculated, not reported by device) */
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recElement *firstAxis;
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recElement *firstButton;
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recElement *firstHat;
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bool removed;
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int instance_id;
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SDL_JoystickGUID guid;
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SDL_Joystick joystick;
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};
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typedef struct joystick_hwdata recDevice;
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/* The base object of the HID Manager API */
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static IOHIDManagerRef hidman = NULL;
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/* static incrementing counter for new joystick devices seen on the system. Devices should start with index 0 */
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static int s_joystick_instance_id = -1;
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#define SDL_JOYSTICK_AXIS_MAX 32767
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void SDL_PrivateJoystickAxis(SDL_Joystick * joystick, uint8_t axis, int16_t value)
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{
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/* Make sure we're not getting garbage or duplicate events */
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if (axis >= joystick->naxes) {
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return;
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}
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if (!joystick->axes[axis].has_initial_value) {
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joystick->axes[axis].initial_value = value;
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joystick->axes[axis].value = value;
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joystick->axes[axis].zero = value;
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joystick->axes[axis].has_initial_value = true;
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}
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if (value == joystick->axes[axis].value) {
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return;
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}
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if (!joystick->axes[axis].sent_initial_value) {
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/* Make sure we don't send motion until there's real activity on this axis */
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const int MAX_ALLOWED_JITTER = SDL_JOYSTICK_AXIS_MAX / 80; /* ShanWan PS3 controller needed 96 */
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if (abs(value - joystick->axes[axis].value) <= MAX_ALLOWED_JITTER) {
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return;
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}
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joystick->axes[axis].sent_initial_value = true;
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joystick->axes[axis].value = value; /* Just so we pass the check above */
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SDL_PrivateJoystickAxis(joystick, axis, joystick->axes[axis].initial_value);
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}
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/* Update internal joystick state */
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joystick->axes[axis].value = value;
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NSResponder<GBJoystickListener> *responder = (typeof(responder)) [[NSApp keyWindow] firstResponder];
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while (responder) {
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if ([responder respondsToSelector:@selector(joystick:axis:movedTo:)]) {
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[responder joystick:@(joystick->name) axis:axis movedTo:value];
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break;
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}
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responder = (typeof(responder)) [responder nextResponder];
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}
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}
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void SDL_PrivateJoystickButton(SDL_Joystick *joystick, uint8_t button, uint8_t state)
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{
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/* Make sure we're not getting garbage or duplicate events */
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if (button >= joystick->nbuttons) {
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return;
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}
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if (state == joystick->buttons[button]) {
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return;
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}
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/* Update internal joystick state */
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joystick->buttons[button] = state;
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NSResponder<GBJoystickListener> *responder = (typeof(responder)) [[NSApp keyWindow] firstResponder];
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while (responder) {
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if ([responder respondsToSelector:@selector(joystick:button:changedState:)]) {
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[responder joystick:@(joystick->name) button:button changedState:state];
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break;
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}
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responder = (typeof(responder)) [responder nextResponder];
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}
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}
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void SDL_PrivateJoystickHat(SDL_Joystick *joystick, uint8_t hat, uint8_t state)
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{
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/* Make sure we're not getting garbage or duplicate events */
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if (hat >= joystick->nhats) {
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return;
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}
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if (state == joystick->hats[hat]) {
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return;
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}
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/* Update internal joystick state */
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joystick->hats[hat] = state;
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NSResponder<GBJoystickListener> *responder = (typeof(responder)) [[NSApp keyWindow] firstResponder];
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while (responder) {
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if ([responder respondsToSelector:@selector(joystick:button:changedState:)]) {
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[responder joystick:@(joystick->name) hat:hat changedState:state];
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break;
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}
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responder = (typeof(responder)) [responder nextResponder];
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}
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}
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static void
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FreeElementList(recElement *pElement)
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{
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while (pElement) {
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recElement *pElementNext = pElement->pNext;
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free(pElement);
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pElement = pElementNext;
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}
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}
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static recDevice *
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FreeDevice(recDevice *removeDevice)
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{
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recDevice *pDeviceNext = NULL;
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if (removeDevice) {
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if (removeDevice->deviceRef) {
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IOHIDDeviceUnscheduleFromRunLoop(removeDevice->deviceRef, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
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removeDevice->deviceRef = NULL;
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}
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/* free element lists */
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FreeElementList(removeDevice->firstAxis);
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FreeElementList(removeDevice->firstButton);
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FreeElementList(removeDevice->firstHat);
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free(removeDevice);
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}
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return pDeviceNext;
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}
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static SInt32
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GetHIDElementState(recDevice *pDevice, recElement *pElement)
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{
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SInt32 value = 0;
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if (pDevice && pElement) {
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IOHIDValueRef valueRef;
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if (IOHIDDeviceGetValue(pDevice->deviceRef, pElement->elementRef, &valueRef) == kIOReturnSuccess) {
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value = (SInt32) IOHIDValueGetIntegerValue(valueRef);
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/* record min and max for auto calibration */
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if (value < pElement->minReport) {
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pElement->minReport = value;
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}
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if (value > pElement->maxReport) {
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pElement->maxReport = value;
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}
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}
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}
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return value;
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}
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static SInt32
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GetHIDScaledCalibratedState(recDevice * pDevice, recElement * pElement, SInt32 min, SInt32 max)
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{
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const float deviceScale = max - min;
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const float readScale = pElement->maxReport - pElement->minReport;
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const SInt32 value = GetHIDElementState(pDevice, pElement);
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if (readScale == 0) {
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return value; /* no scaling at all */
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}
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return ((value - pElement->minReport) * deviceScale / readScale) + min;
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}
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static void
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JoystickDeviceWasRemovedCallback(void *ctx, IOReturn result, void *sender)
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{
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recDevice *device = (recDevice *) ctx;
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device->removed = true;
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device->deviceRef = NULL; // deviceRef was invalidated due to the remove
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FreeDevice(device);
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}
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static void AddHIDElement(const void *value, void *parameter);
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/* Call AddHIDElement() on all elements in an array of IOHIDElementRefs */
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static void
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AddHIDElements(CFArrayRef array, recDevice *pDevice)
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{
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const CFRange range = { 0, CFArrayGetCount(array) };
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CFArrayApplyFunction(array, range, AddHIDElement, pDevice);
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}
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static bool
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ElementAlreadyAdded(const IOHIDElementCookie cookie, const recElement *listitem)
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{
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while (listitem) {
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if (listitem->cookie == cookie) {
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return true;
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}
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listitem = listitem->pNext;
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}
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return false;
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}
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/* See if we care about this HID element, and if so, note it in our recDevice. */
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static void
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AddHIDElement(const void *value, void *parameter)
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{
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recDevice *pDevice = (recDevice *) parameter;
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IOHIDElementRef refElement = (IOHIDElementRef) value;
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const CFTypeID elementTypeID = refElement ? CFGetTypeID(refElement) : 0;
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if (refElement && (elementTypeID == IOHIDElementGetTypeID())) {
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const IOHIDElementCookie cookie = IOHIDElementGetCookie(refElement);
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const uint32_t usagePage = IOHIDElementGetUsagePage(refElement);
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const uint32_t usage = IOHIDElementGetUsage(refElement);
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recElement *element = NULL;
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recElement **headElement = NULL;
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/* look at types of interest */
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switch (IOHIDElementGetType(refElement)) {
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case kIOHIDElementTypeInput_Misc:
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case kIOHIDElementTypeInput_Button:
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case kIOHIDElementTypeInput_Axis: {
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switch (usagePage) { /* only interested in kHIDPage_GenericDesktop and kHIDPage_Button */
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case kHIDPage_GenericDesktop:
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switch (usage) {
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case kHIDUsage_GD_X:
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case kHIDUsage_GD_Y:
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case kHIDUsage_GD_Z:
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case kHIDUsage_GD_Rx:
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case kHIDUsage_GD_Ry:
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case kHIDUsage_GD_Rz:
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case kHIDUsage_GD_Slider:
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case kHIDUsage_GD_Dial:
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case kHIDUsage_GD_Wheel:
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if (!ElementAlreadyAdded(cookie, pDevice->firstAxis)) {
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element = (recElement *) calloc(1, sizeof (recElement));
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if (element) {
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pDevice->axes++;
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headElement = &(pDevice->firstAxis);
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}
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}
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break;
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case kHIDUsage_GD_Hatswitch:
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if (!ElementAlreadyAdded(cookie, pDevice->firstHat)) {
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element = (recElement *) calloc(1, sizeof (recElement));
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if (element) {
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pDevice->hats++;
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headElement = &(pDevice->firstHat);
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}
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}
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break;
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case kHIDUsage_GD_DPadUp:
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case kHIDUsage_GD_DPadDown:
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case kHIDUsage_GD_DPadRight:
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case kHIDUsage_GD_DPadLeft:
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case kHIDUsage_GD_Start:
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case kHIDUsage_GD_Select:
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case kHIDUsage_GD_SystemMainMenu:
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if (!ElementAlreadyAdded(cookie, pDevice->firstButton)) {
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element = (recElement *) calloc(1, sizeof (recElement));
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if (element) {
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pDevice->buttons++;
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headElement = &(pDevice->firstButton);
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}
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}
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break;
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}
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break;
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case kHIDPage_Simulation:
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switch (usage) {
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case kHIDUsage_Sim_Rudder:
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case kHIDUsage_Sim_Throttle:
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case kHIDUsage_Sim_Accelerator:
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case kHIDUsage_Sim_Brake:
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if (!ElementAlreadyAdded(cookie, pDevice->firstAxis)) {
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element = (recElement *) calloc(1, sizeof (recElement));
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if (element) {
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pDevice->axes++;
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headElement = &(pDevice->firstAxis);
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}
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}
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break;
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default:
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break;
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}
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break;
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case kHIDPage_Button:
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case kHIDPage_Consumer: /* e.g. 'pause' button on Steelseries MFi gamepads. */
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if (!ElementAlreadyAdded(cookie, pDevice->firstButton)) {
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element = (recElement *) calloc(1, sizeof (recElement));
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if (element) {
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pDevice->buttons++;
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headElement = &(pDevice->firstButton);
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}
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}
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break;
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default:
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break;
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}
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}
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break;
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case kIOHIDElementTypeCollection: {
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CFArrayRef array = IOHIDElementGetChildren(refElement);
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if (array) {
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AddHIDElements(array, pDevice);
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}
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}
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break;
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default:
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break;
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}
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if (element && headElement) { /* add to list */
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recElement *elementPrevious = NULL;
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recElement *elementCurrent = *headElement;
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while (elementCurrent && usage >= elementCurrent->usage) {
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elementPrevious = elementCurrent;
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elementCurrent = elementCurrent->pNext;
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}
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if (elementPrevious) {
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elementPrevious->pNext = element;
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}
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else {
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*headElement = element;
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}
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element->elementRef = refElement;
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element->usagePage = usagePage;
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element->usage = usage;
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element->pNext = elementCurrent;
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element->minReport = element->min = (SInt32) IOHIDElementGetLogicalMin(refElement);
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element->maxReport = element->max = (SInt32) IOHIDElementGetLogicalMax(refElement);
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element->cookie = IOHIDElementGetCookie(refElement);
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pDevice->elements++;
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}
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}
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}
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static bool
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GetDeviceInfo(IOHIDDeviceRef hidDevice, recDevice *pDevice)
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{
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const uint16_t BUS_USB = 0x03;
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const uint16_t BUS_BLUETOOTH = 0x05;
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int32_t vendor = 0;
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int32_t product = 0;
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int32_t version = 0;
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CFTypeRef refCF = NULL;
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CFArrayRef array = NULL;
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uint16_t *guid16 = (uint16_t *)pDevice->guid.data;
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/* get usage page and usage */
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refCF = IOHIDDeviceGetProperty(hidDevice, CFSTR(kIOHIDPrimaryUsagePageKey));
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if (refCF) {
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CFNumberGetValue(refCF, kCFNumberSInt32Type, &pDevice->usagePage);
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}
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if (pDevice->usagePage != kHIDPage_GenericDesktop) {
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return false; /* Filter device list to non-keyboard/mouse stuff */
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}
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refCF = IOHIDDeviceGetProperty(hidDevice, CFSTR(kIOHIDPrimaryUsageKey));
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if (refCF) {
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CFNumberGetValue(refCF, kCFNumberSInt32Type, &pDevice->usage);
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}
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if ((pDevice->usage != kHIDUsage_GD_Joystick &&
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pDevice->usage != kHIDUsage_GD_GamePad &&
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pDevice->usage != kHIDUsage_GD_MultiAxisController)) {
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return false; /* Filter device list to non-keyboard/mouse stuff */
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}
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pDevice->deviceRef = hidDevice;
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/* get device name */
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refCF = IOHIDDeviceGetProperty(hidDevice, CFSTR(kIOHIDProductKey));
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if (!refCF) {
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/* Maybe we can't get "AwesomeJoystick2000", but we can get "Logitech"? */
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refCF = IOHIDDeviceGetProperty(hidDevice, CFSTR(kIOHIDManufacturerKey));
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}
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if ((!refCF) || (!CFStringGetCString(refCF, pDevice->product, sizeof (pDevice->product), kCFStringEncodingUTF8))) {
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strlcpy(pDevice->product, "Unidentified joystick", sizeof (pDevice->product));
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}
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refCF = IOHIDDeviceGetProperty(hidDevice, CFSTR(kIOHIDVendorIDKey));
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if (refCF) {
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CFNumberGetValue(refCF, kCFNumberSInt32Type, &vendor);
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}
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refCF = IOHIDDeviceGetProperty(hidDevice, CFSTR(kIOHIDProductIDKey));
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if (refCF) {
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CFNumberGetValue(refCF, kCFNumberSInt32Type, &product);
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}
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refCF = IOHIDDeviceGetProperty(hidDevice, CFSTR(kIOHIDVersionNumberKey));
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if (refCF) {
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CFNumberGetValue(refCF, kCFNumberSInt32Type, &version);
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}
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memset(pDevice->guid.data, 0, sizeof(pDevice->guid.data));
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if (vendor && product) {
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*guid16++ = BUS_USB;
|
|
*guid16++ = 0;
|
|
*guid16++ = vendor;
|
|
*guid16++ = 0;
|
|
*guid16++ = product;
|
|
*guid16++ = 0;
|
|
*guid16++ = version;
|
|
*guid16++ = 0;
|
|
}
|
|
else {
|
|
*guid16++ = BUS_BLUETOOTH;
|
|
*guid16++ = 0;
|
|
strlcpy((char*)guid16, pDevice->product, sizeof(pDevice->guid.data) - 4);
|
|
}
|
|
|
|
array = IOHIDDeviceCopyMatchingElements(hidDevice, NULL, kIOHIDOptionsTypeNone);
|
|
if (array) {
|
|
AddHIDElements(array, pDevice);
|
|
CFRelease(array);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
SDL_SYS_JoystickUpdate(SDL_Joystick * joystick)
|
|
{
|
|
recDevice *device = joystick->hwdata;
|
|
recElement *element;
|
|
SInt32 value;
|
|
int i;
|
|
|
|
if (!device) {
|
|
return;
|
|
}
|
|
|
|
if (device->removed) { /* device was unplugged; ignore it. */
|
|
if (joystick->hwdata) {
|
|
joystick->force_recentering = true;
|
|
joystick->hwdata = NULL;
|
|
}
|
|
return;
|
|
}
|
|
|
|
element = device->firstAxis;
|
|
i = 0;
|
|
while (element) {
|
|
value = GetHIDScaledCalibratedState(device, element, -32768, 32767);
|
|
SDL_PrivateJoystickAxis(joystick, i, value);
|
|
element = element->pNext;
|
|
++i;
|
|
}
|
|
|
|
element = device->firstButton;
|
|
i = 0;
|
|
while (element) {
|
|
value = GetHIDElementState(device, element);
|
|
if (value > 1) { /* handle pressure-sensitive buttons */
|
|
value = 1;
|
|
}
|
|
SDL_PrivateJoystickButton(joystick, i, value);
|
|
element = element->pNext;
|
|
++i;
|
|
}
|
|
|
|
element = device->firstHat;
|
|
i = 0;
|
|
while (element) {
|
|
signed range = (element->max - element->min + 1);
|
|
value = GetHIDElementState(device, element) - element->min;
|
|
if (range == 4) { /* 4 position hatswitch - scale up value */
|
|
value *= 2;
|
|
}
|
|
else if (range != 8) { /* Neither a 4 nor 8 positions - fall back to default position (centered) */
|
|
value = -1;
|
|
}
|
|
if ((unsigned)value >= 8) {
|
|
value = -1;
|
|
}
|
|
|
|
SDL_PrivateJoystickHat(joystick, i, value);
|
|
|
|
element = element->pNext;
|
|
++i;
|
|
}
|
|
|
|
}
|
|
|
|
static void JoystickInputCallback(
|
|
SDL_Joystick * joystick,
|
|
IOReturn result,
|
|
void * _Nullable sender,
|
|
IOHIDReportType type,
|
|
uint32_t reportID,
|
|
uint8_t * report,
|
|
CFIndex reportLength)
|
|
{
|
|
SDL_SYS_JoystickUpdate(joystick);
|
|
}
|
|
|
|
static void
|
|
JoystickDeviceWasAddedCallback(void *ctx, IOReturn res, void *sender, IOHIDDeviceRef ioHIDDeviceObject)
|
|
{
|
|
recDevice *device;
|
|
io_service_t ioservice;
|
|
|
|
if (res != kIOReturnSuccess) {
|
|
return;
|
|
}
|
|
|
|
device = (recDevice *) calloc(1, sizeof(recDevice));
|
|
|
|
if (!device) {
|
|
abort();
|
|
return;
|
|
}
|
|
|
|
if (!GetDeviceInfo(ioHIDDeviceObject, device)) {
|
|
free(device);
|
|
return; /* not a device we care about, probably. */
|
|
}
|
|
|
|
SDL_Joystick *joystick = &device->joystick;
|
|
|
|
joystick->instance_id = device->instance_id;
|
|
joystick->hwdata = device;
|
|
joystick->name = device->product;
|
|
|
|
joystick->naxes = device->axes;
|
|
joystick->nbuttons = device->buttons;
|
|
joystick->nhats = device->hats;
|
|
|
|
if (joystick->naxes > 0) {
|
|
joystick->axes = (SDL_JoystickAxisInfo *) calloc(joystick->naxes, sizeof(SDL_JoystickAxisInfo));
|
|
}
|
|
if (joystick->nbuttons > 0) {
|
|
joystick->buttons = (uint8_t *) calloc(joystick->nbuttons, 1);
|
|
}
|
|
if (joystick->nhats > 0) {
|
|
joystick->hats = (uint8_t *) calloc(joystick->nhats, 1);
|
|
}
|
|
|
|
/* Get notified when this device is disconnected. */
|
|
IOHIDDeviceRegisterRemovalCallback(ioHIDDeviceObject, JoystickDeviceWasRemovedCallback, device);
|
|
static uint8_t junk[80];
|
|
IOHIDDeviceRegisterInputReportCallback(ioHIDDeviceObject, junk, sizeof(junk), (IOHIDReportCallback) JoystickInputCallback, joystick);
|
|
IOHIDDeviceScheduleWithRunLoop(ioHIDDeviceObject, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
|
|
|
|
/* Allocate an instance ID for this device */
|
|
device->instance_id = ++s_joystick_instance_id;
|
|
|
|
/* We have to do some storage of the io_service_t for SDL_HapticOpenFromJoystick */
|
|
ioservice = IOHIDDeviceGetService(ioHIDDeviceObject);
|
|
}
|
|
|
|
static bool
|
|
ConfigHIDManager(CFArrayRef matchingArray)
|
|
{
|
|
CFRunLoopRef runloop = CFRunLoopGetCurrent();
|
|
|
|
if (IOHIDManagerOpen(hidman, kIOHIDOptionsTypeNone) != kIOReturnSuccess) {
|
|
return false;
|
|
}
|
|
|
|
IOHIDManagerSetDeviceMatchingMultiple(hidman, matchingArray);
|
|
IOHIDManagerRegisterDeviceMatchingCallback(hidman, JoystickDeviceWasAddedCallback, NULL);
|
|
IOHIDManagerScheduleWithRunLoop(hidman, runloop, kCFRunLoopDefaultMode);
|
|
|
|
return true; /* good to go. */
|
|
}
|
|
|
|
|
|
static CFDictionaryRef
|
|
CreateHIDDeviceMatchDictionary(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;
|
|
}
|
|
|
|
static bool
|
|
CreateHIDManager(void)
|
|
{
|
|
bool retval = false;
|
|
int okay = 1;
|
|
const void *vals[] = {
|
|
(void *) CreateHIDDeviceMatchDictionary(kHIDPage_GenericDesktop, kHIDUsage_GD_Joystick, &okay),
|
|
(void *) CreateHIDDeviceMatchDictionary(kHIDPage_GenericDesktop, kHIDUsage_GD_GamePad, &okay),
|
|
(void *) CreateHIDDeviceMatchDictionary(kHIDPage_GenericDesktop, kHIDUsage_GD_MultiAxisController, &okay),
|
|
};
|
|
const size_t numElements = sizeof(vals) / sizeof(vals[0]);
|
|
CFArrayRef array = okay ? CFArrayCreate(kCFAllocatorDefault, vals, numElements, &kCFTypeArrayCallBacks) : NULL;
|
|
size_t i;
|
|
|
|
for (i = 0; i < numElements; i++) {
|
|
if (vals[i]) {
|
|
CFRelease((CFTypeRef) vals[i]);
|
|
}
|
|
}
|
|
|
|
if (array) {
|
|
hidman = IOHIDManagerCreate(kCFAllocatorDefault, kIOHIDOptionsTypeNone);
|
|
if (hidman != NULL) {
|
|
retval = ConfigHIDManager(array);
|
|
}
|
|
CFRelease(array);
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
|
|
void __attribute__((constructor)) SDL_SYS_JoystickInit(void)
|
|
{
|
|
if (!CreateHIDManager()) {
|
|
fprintf(stderr, "Joystick: Couldn't initialize HID Manager");
|
|
}
|
|
}
|