dlls/winejoystick.drv/joystick_osx.c

   1 /*
   2  * WinMM joystick driver OS X implementation
   3  *
   4  * Copyright 1997 Andreas Mohr
   5  * Copyright 1998 Marcus Meissner
   6  * Copyright 1998,1999 Lionel Ulmer
   7  * Copyright 2000 Wolfgang Schwotzer
   8  * Copyright 2000-2001 TransGaming Technologies Inc.
   9  * Copyright 2002 David Hagood
  10  * Copyright 2009 CodeWeavers, Aric Stewart
  11  * Copyright 2015 Ken Thomases for CodeWeavers Inc.
  12  * Copyright 2016 David Lawrie
  13  *
  14  * This library is free software; you can redistribute it and/or
  15  * modify it under the terms of the GNU Lesser General Public
  16  * License as published by the Free Software Foundation; either
  17  * version 2.1 of the License, or (at your option) any later version.
  18  *
  19  * This library is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  22  * Lesser General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU Lesser General Public
  25  * License along with this library; if not, write to the Free Software
  26  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  27  */
  28
  29 #include "config.h"
  30
  31 #if defined(HAVE_IOKIT_HID_IOHIDLIB_H)
  32
  33 #define DWORD UInt32
  34 #define LPDWORD UInt32*
  35 #define LONG SInt32
  36 #define LPLONG SInt32*
  37 #define E_PENDING __carbon_E_PENDING
  38 #define ULONG __carbon_ULONG
  39 #define E_INVALIDARG __carbon_E_INVALIDARG
  40 #define E_OUTOFMEMORY __carbon_E_OUTOFMEMORY
  41 #define E_HANDLE __carbon_E_HANDLE
  42 #define E_ACCESSDENIED __carbon_E_ACCESSDENIED
  43 #define E_UNEXPECTED __carbon_E_UNEXPECTED
  44 #define E_FAIL __carbon_E_FAIL
  45 #define E_ABORT __carbon_E_ABORT
  46 #define E_POINTER __carbon_E_POINTER
  47 #define E_NOINTERFACE __carbon_E_NOINTERFACE
  48 #define E_NOTIMPL __carbon_E_NOTIMPL
  49 #define S_FALSE __carbon_S_FALSE
  50 #define S_OK __carbon_S_OK
  51 #define HRESULT_FACILITY __carbon_HRESULT_FACILITY
  52 #define IS_ERROR __carbon_IS_ERROR
  53 #define FAILED __carbon_FAILED
  54 #define SUCCEEDED __carbon_SUCCEEDED
  55 #define MAKE_HRESULT __carbon_MAKE_HRESULT
  56 #define HRESULT __carbon_HRESULT
  57 #define STDMETHODCALLTYPE __carbon_STDMETHODCALLTYPE
  58 #include <IOKit/IOKitLib.h>
  59 #include <IOKit/hid/IOHIDLib.h>
  60 #undef ULONG
  61 #undef E_INVALIDARG
  62 #undef E_OUTOFMEMORY
  63 #undef E_HANDLE
  64 #undef E_ACCESSDENIED
  65 #undef E_UNEXPECTED
  66 #undef E_FAIL
  67 #undef E_ABORT
  68 #undef E_POINTER
  69 #undef E_NOINTERFACE
  70 #undef E_NOTIMPL
  71 #undef S_FALSE
  72 #undef S_OK
  73 #undef HRESULT_FACILITY
  74 #undef IS_ERROR
  75 #undef FAILED
  76 #undef SUCCEEDED
  77 #undef MAKE_HRESULT
  78 #undef HRESULT
  79 #undef STDMETHODCALLTYPE
  80 #undef DWORD
  81 #undef LPDWORD
  82 #undef LONG
  83 #undef LPLONG
  84 #undef E_PENDING
  85
  86 #include "joystick.h"
  87
  88 #include "wine/debug.h"
  89
  90
  91 WINE_DEFAULT_DEBUG_CHANNEL(joystick);
  92
  93
  94 #define MAXJOYSTICK (JOYSTICKID2 + 30)
  95
  96
  97 enum {
  98     AXIS_X,  /* Winmm X */
  99     AXIS_Y,  /* Winmm Y */
 100     AXIS_Z,  /* Winmm Z */
 101     AXIS_RX, /* Winmm V */
 102     AXIS_RY, /* Winmm U */
 103     AXIS_RZ, /* Winmm R */
 104     NUM_AXES
 105 };
 106
 107 struct axis {
 108     IOHIDElementRef element;
 109     CFIndex min_value, max_value;
 110 };
 111
 112 typedef struct {
 113     BOOL                in_use;
 114     IOHIDElementRef     element;
 115     struct axis         axes[NUM_AXES];
 116     CFMutableArrayRef   buttons;
 117     IOHIDElementRef     hatswitch;
 118 } joystick_t;
 119
 120
 121 static joystick_t joysticks[MAXJOYSTICK];
 122 static CFMutableArrayRef device_main_elements = NULL;
 123
 124 static long get_device_property_long(IOHIDDeviceRef device, CFStringRef key)
 125 {
 126     CFTypeRef ref;
 127     long result = 0;
 128
 129     if (device)
 130     {
 131         assert(IOHIDDeviceGetTypeID() == CFGetTypeID(device));
 132
 133         ref = IOHIDDeviceGetProperty(device, key);
 134
 135         if (ref && CFNumberGetTypeID() == CFGetTypeID(ref))
 136             CFNumberGetValue((CFNumberRef)ref, kCFNumberLongType, &result);
 137     }
 138
 139     return result;
 140 }
 141
 142 static CFStringRef copy_device_name(IOHIDDeviceRef device)
 143 {
 144     CFStringRef name;
 145
 146     if (device)
 147     {
 148         CFTypeRef ref_name;
 149
 150         assert(IOHIDDeviceGetTypeID() == CFGetTypeID(device));
 151
 152         ref_name = IOHIDDeviceGetProperty(device, CFSTR(kIOHIDProductKey));
 153
 154         if (ref_name && CFStringGetTypeID() == CFGetTypeID(ref_name))
 155             name = CFStringCreateCopy(kCFAllocatorDefault, ref_name);
 156         else
 157         {
 158             long vendID, prodID;
 159
 160             vendID = get_device_property_long(device, CFSTR(kIOHIDVendorIDKey));
 161             prodID = get_device_property_long(device, CFSTR(kIOHIDProductIDKey));
 162             name = CFStringCreateWithFormat(kCFAllocatorDefault, NULL, CFSTR("0x%04lx 0x%04lx"), vendID, prodID);
 163         }
 164     }
 165     else
 166     {
 167         ERR("NULL device\n");
 168         name = CFStringCreateCopy(kCFAllocatorDefault, CFSTR(""));
 169     }
 170
 171     return name;
 172 }
 173
 174 static long get_device_location_ID(IOHIDDeviceRef device)
 175 {
 176     return get_device_property_long(device, CFSTR(kIOHIDLocationIDKey));
 177 }
 178
 179 static const char* debugstr_cf(CFTypeRef t)
 180 {
 181     CFStringRef s;
 182     const char* ret;
 183
 184     if (!t) return "(null)";
 185
 186     if (CFGetTypeID(t) == CFStringGetTypeID())
 187         s = t;
 188     else
 189         s = CFCopyDescription(t);
 190     ret = CFStringGetCStringPtr(s, kCFStringEncodingUTF8);
 191     if (ret) ret = debugstr_a(ret);
 192     if (!ret)
 193     {
 194         const UniChar* u = CFStringGetCharactersPtr(s);
 195         if (u)
 196             ret = debugstr_wn((const WCHAR*)u, CFStringGetLength(s));
 197     }
 198     if (!ret)
 199     {
 200         UniChar buf[200];
 201         int len = min(CFStringGetLength(s), sizeof(buf)/sizeof(buf[0]));
 202         CFStringGetCharacters(s, CFRangeMake(0, len), buf);
 203         ret = debugstr_wn(buf, len);
 204     }
 205     if (s != t) CFRelease(s);
 206     return ret;
 207 }
 208
 209 static const char* debugstr_device(IOHIDDeviceRef device)
 210 {
 211     return wine_dbg_sprintf("<IOHIDDevice %p product %s IOHIDLocationID %lu>", device,
 212                             debugstr_cf(IOHIDDeviceGetProperty(device, CFSTR(kIOHIDProductKey))),
 213                             get_device_location_ID(device));
 214 }
 215
 216 static const char* debugstr_element(IOHIDElementRef element)
 217 {
 218     return wine_dbg_sprintf("<IOHIDElement %p type %d usage %u/%u device %p>", element,
 219                             IOHIDElementGetType(element), IOHIDElementGetUsagePage(element),
 220                             IOHIDElementGetUsage(element), IOHIDElementGetDevice(element));
 221 }
 222
 223 static int axis_for_usage_GD(int usage)
 224 {
 225     switch (usage)
 226     {
 227         case kHIDUsage_GD_X: return AXIS_X;
 228         case kHIDUsage_GD_Y: return AXIS_Y;
 229         case kHIDUsage_GD_Z: return AXIS_Z;
 230         case kHIDUsage_GD_Rx: return AXIS_RX;
 231         case kHIDUsage_GD_Ry: return AXIS_RY;
 232         case kHIDUsage_GD_Rz: return AXIS_RZ;
 233     }
 234
 235     return -1;
 236 }
 237
 238 static int axis_for_usage_Sim(int usage)
 239 {
 240     switch (usage)
 241     {
 242         case kHIDUsage_Sim_Rudder: return AXIS_RZ;
 243         case kHIDUsage_Sim_Throttle: return AXIS_Z;
 244         case kHIDUsage_Sim_Steering: return AXIS_X;
 245         case kHIDUsage_Sim_Accelerator: return AXIS_Y;
 246         case kHIDUsage_Sim_Brake: return AXIS_RZ;
 247     }
 248
 249     return -1;
 250 }
 251
 252 /**************************************************************************
 253  *                              joystick_from_id
 254  */
 255 static joystick_t* joystick_from_id(DWORD_PTR device_id)
 256 {
 257     int index;
 258
 259     if ((device_id - (DWORD_PTR)joysticks) % sizeof(joysticks[0]) != 0)
 260         return NULL;
 261     index = (device_id - (DWORD_PTR)joysticks) / sizeof(joysticks[0]);
 262     if (index < 0 || index >= MAXJOYSTICK || !((joystick_t*)device_id)->in_use)
 263         return NULL;
 264
 265     return (joystick_t*)device_id;
 266 }
 267
 268 /**************************************************************************
 269  *                              create_osx_device_match
 270  */
 271 static CFDictionaryRef create_osx_device_match(int usage)
 272 {
 273     CFDictionaryRef result = NULL;
 274     int number;
 275     CFStringRef keys[] = { CFSTR(kIOHIDDeviceUsagePageKey), CFSTR(kIOHIDDeviceUsageKey) };
 276     CFNumberRef values[2];
 277     int i;
 278
 279     TRACE("usage %d\n", usage);
 280
 281     number = kHIDPage_GenericDesktop;
 282     values[0] = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &number);
 283     values[1] = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &usage);
 284
 285     if (values[0] && values[1])
 286     {
 287         result = CFDictionaryCreate(NULL, (const void**)keys, (const void**)values, sizeof(values) / sizeof(values[0]),
 288                                     &kCFCopyStringDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
 289
 290         if (!result)
 291             ERR("CFDictionaryCreate failed.\n");
 292     }
 293     else
 294         ERR("CFNumberCreate failed.\n");
 295
 296     for (i = 0; i < sizeof(values) / sizeof(values[0]); i++)
 297         if (values[i]) CFRelease(values[i]);
 298
 299     return result;
 300 }
 301
 302 /**************************************************************************
 303  *                              find_top_level
 304  */
 305 static CFIndex find_top_level(IOHIDDeviceRef hid_device, CFMutableArrayRef main_elements)
 306 {
 307     CFArrayRef      elements;
 308     CFIndex         total = 0;
 309
 310     TRACE("hid_device %s\n", debugstr_device(hid_device));
 311
 312     if (!hid_device)
 313         return 0;
 314
 315     elements = IOHIDDeviceCopyMatchingElements(hid_device, NULL, 0);
 316
 317     if (elements)
 318     {
 319         CFIndex i, count = CFArrayGetCount(elements);
 320         for (i = 0; i < count; i++)
 321         {
 322             IOHIDElementRef element = (IOHIDElementRef)CFArrayGetValueAtIndex(elements, i);
 323             int type = IOHIDElementGetType(element);
 324
 325             TRACE("element %s\n", debugstr_element(element));
 326
 327             /* Check for top-level gaming device collections */
 328             if (type == kIOHIDElementTypeCollection && IOHIDElementGetParent(element) == 0)
 329             {
 330                 int usage_page = IOHIDElementGetUsagePage(element);
 331                 int usage = IOHIDElementGetUsage(element);
 332
 333                 if (usage_page == kHIDPage_GenericDesktop &&
 334                     (usage == kHIDUsage_GD_Joystick || usage == kHIDUsage_GD_GamePad || usage == kHIDUsage_GD_MultiAxisController))
 335                 {
 336                     CFArrayAppendValue(main_elements, element);
 337                     total++;
 338                 }
 339             }
 340         }
 341         CFRelease(elements);
 342     }
 343
 344     TRACE("-> total %d\n", (int)total);
 345     return total;
 346 }
 347 /**************************************************************************
 348  *                              device_name_comparator
 349  *
 350  * Virtual joysticks may not have a kIOHIDLocationIDKey and will default to location ID of 0, this orders virtual joysticks by their name
 351  */
 352 static CFComparisonResult device_name_comparator(IOHIDDeviceRef device1, IOHIDDeviceRef device2)
 353 {
 354     CFStringRef name1 = copy_device_name(device1), name2 = copy_device_name(device2);
 355     CFComparisonResult result = CFStringCompare(name1, name2, (kCFCompareForcedOrdering | kCFCompareNumerically));
 356     CFRelease(name1);
 357     CFRelease(name2);
 358     return  result;
 359 }
 360
 361 /**************************************************************************
 362  *                              device_location_name_comparator
 363  *
 364  * Helper to sort device array first by location ID, since location IDs are consistent across boots & launches, then by product name
 365  */
 366 static CFComparisonResult device_location_name_comparator(const void *val1, const void *val2, void *context)
 367 {
 368     IOHIDDeviceRef device1 = (IOHIDDeviceRef)val1, device2 = (IOHIDDeviceRef)val2;
 369     long loc1 = get_device_location_ID(device1), loc2 = get_device_location_ID(device2);
 370
 371     if (loc1 < loc2)
 372         return kCFCompareLessThan;
 373     else if (loc1 > loc2)
 374         return kCFCompareGreaterThan;
 375     return device_name_comparator(device1, device2);
 376 }
 377
 378 /**************************************************************************
 379  *                              copy_set_to_array
 380  *
 381  * Helper to copy the CFSet to a CFArray
 382  */
 383 static void copy_set_to_array(const void *value, void *context)
 384 {
 385     CFArrayAppendValue(context, value);
 386 }
 387
 388 /**************************************************************************
 389  *                              find_osx_devices
 390  */
 391 static int find_osx_devices(void)
 392 {
 393     IOHIDManagerRef hid_manager;
 394     int usages[] = { kHIDUsage_GD_Joystick, kHIDUsage_GD_GamePad, kHIDUsage_GD_MultiAxisController };
 395     int i;
 396     CFDictionaryRef matching_dicts[sizeof(usages) / sizeof(usages[0])];
 397     CFArrayRef matching;
 398     CFSetRef devset;
 399
 400     TRACE("()\n");
 401
 402     hid_manager = IOHIDManagerCreate(kCFAllocatorDefault, 0L);
 403     if (IOHIDManagerOpen(hid_manager, 0) != kIOReturnSuccess)
 404     {
 405         ERR("Couldn't open IOHIDManager.\n");
 406         CFRelease(hid_manager);
 407         return 0;
 408     }
 409
 410     for (i = 0; i < sizeof(matching_dicts) / sizeof(matching_dicts[0]); i++)
 411     {
 412         matching_dicts[i] = create_osx_device_match(usages[i]);
 413         if (!matching_dicts[i])
 414         {
 415             while (i > 0)
 416                 CFRelease(matching_dicts[--i]);
 417             goto fail;
 418         }
 419     }
 420
 421     matching = CFArrayCreate(NULL, (const void**)matching_dicts, sizeof(matching_dicts) / sizeof(matching_dicts[0]),
 422                              &kCFTypeArrayCallBacks);
 423
 424     for (i = 0; i < sizeof(matching_dicts) / sizeof(matching_dicts[0]); i++)
 425         CFRelease(matching_dicts[i]);
 426
 427     IOHIDManagerSetDeviceMatchingMultiple(hid_manager, matching);
 428     CFRelease(matching);
 429     devset = IOHIDManagerCopyDevices(hid_manager);
 430     if (devset)
 431     {
 432         CFIndex num_devices, num_main_elements;
 433         CFMutableArrayRef devices;
 434
 435         num_devices = CFSetGetCount(devset);
 436         devices = CFArrayCreateMutable(kCFAllocatorDefault, num_devices, &kCFTypeArrayCallBacks);
 437         CFSetApplyFunction(devset, copy_set_to_array, (void *)devices);
 438         CFArraySortValues(devices, CFRangeMake(0, num_devices), device_location_name_comparator, NULL);
 439
 440         CFRelease(devset);
 441         if (!devices)
 442             goto fail;
 443
 444         device_main_elements = CFArrayCreateMutable(kCFAllocatorDefault, 0, &kCFTypeArrayCallBacks);
 445         if (!device_main_elements)
 446         {
 447             CFRelease(devices);
 448             goto fail;
 449         }
 450
 451         num_main_elements = 0;
 452         for (i = 0; i < num_devices; i++)
 453         {
 454             IOHIDDeviceRef hid_device = (IOHIDDeviceRef)CFArrayGetValueAtIndex(devices, i);
 455             TRACE("hid_device %s\n", debugstr_device(hid_device));
 456             num_main_elements += find_top_level(hid_device, device_main_elements);
 457         }
 458
 459         CFRelease(devices);
 460
 461         TRACE("found %i device(s), %i collection(s)\n",(int)num_devices,(int)num_main_elements);
 462         return (int)num_main_elements;
 463     }
 464
 465 fail:
 466     IOHIDManagerClose(hid_manager, 0);
 467     CFRelease(hid_manager);
 468     return 0;
 469 }
 470
 471 /**************************************************************************
 472  *                              collect_joystick_elements
 473  */
 474 static void collect_joystick_elements(joystick_t* joystick, IOHIDElementRef collection)
 475 {
 476     CFIndex    i, count;
 477     CFArrayRef children = IOHIDElementGetChildren(collection);
 478
 479     TRACE("collection %s\n", debugstr_element(collection));
 480
 481     count = CFArrayGetCount(children);
 482     for (i = 0; i < count; i++)
 483     {
 484         IOHIDElementRef child;
 485         int type;
 486         uint32_t usage_page;
 487
 488         child = (IOHIDElementRef)CFArrayGetValueAtIndex(children, i);
 489         TRACE("child %s\n", debugstr_element(child));
 490         type = IOHIDElementGetType(child);
 491         usage_page = IOHIDElementGetUsagePage(child);
 492
 493         switch (type)
 494         {
 495             case kIOHIDElementTypeCollection:
 496                 collect_joystick_elements(joystick, child);
 497                 break;
 498             case kIOHIDElementTypeInput_Button:
 499             {
 500                 TRACE("kIOHIDElementTypeInput_Button usage_page %d\n", usage_page);
 501
 502                 /* avoid strange elements found on the 360 controller */
 503                 if (usage_page == kHIDPage_Button)
 504                     CFArrayAppendValue(joystick->buttons, child);
 505                 break;
 506             }
 507             case kIOHIDElementTypeInput_Axis:
 508             case kIOHIDElementTypeInput_Misc:
 509             {
 510                 uint32_t usage = IOHIDElementGetUsage( child );
 511                 switch (usage_page)
 512                 {
 513                     case kHIDPage_GenericDesktop:
 514                     {
 515                         switch(usage)
 516                         {
 517                             case kHIDUsage_GD_Hatswitch:
 518                             {
 519                                 TRACE("kIOHIDElementTypeInput_Axis/Misc / kHIDUsage_GD_Hatswitch\n");
 520                                 if (joystick->hatswitch)
 521                                     TRACE("    ignoring additional hatswitch\n");
 522                                 else
 523                                     joystick->hatswitch = (IOHIDElementRef)CFRetain(child);
 524                                 break;
 525                             }
 526                             case kHIDUsage_GD_X:
 527                             case kHIDUsage_GD_Y:
 528                             case kHIDUsage_GD_Z:
 529                             case kHIDUsage_GD_Rx:
 530                             case kHIDUsage_GD_Ry:
 531                             case kHIDUsage_GD_Rz:
 532                             {
 533                                 int axis = axis_for_usage_GD(usage);
 534                                 TRACE("kIOHIDElementTypeInput_Axis/Misc / kHIDUsage_GD_<axis> (%d) axis %d\n", usage, axis);
 535                                 if (axis < 0 || joystick->axes[axis].element)
 536                                     TRACE("    ignoring\n");
 537                                 else
 538                                 {
 539                                     joystick->axes[axis].element = (IOHIDElementRef)CFRetain(child);
 540                                     joystick->axes[axis].min_value = IOHIDElementGetLogicalMin(child);
 541                                     joystick->axes[axis].max_value = IOHIDElementGetLogicalMax(child);
 542                                 }
 543                                 break;
 544                             }
 545                             case kHIDUsage_GD_Slider:
 546                             case kHIDUsage_GD_Dial:
 547                             case kHIDUsage_GD_Wheel:
 548                             {
 549                                 /* if one axis is taken, fall to the next until axes are filled */
 550                                 int possible_axes[3] = {AXIS_Z,AXIS_RY,AXIS_RX};
 551                                 int axis = 0;
 552                                 while(axis < 3 && joystick->axes[possible_axes[axis]].element)
 553                                     axis++;
 554                                 if (axis == 3)
 555                                     TRACE("kIOHIDElementTypeInput_Axis/Misc / kHIDUsage_GD_<axis> (%d)\n    ignoring\n", usage);
 556                                 else
 557                                 {
 558                                     TRACE("kIOHIDElementTypeInput_Axis/Misc / kHIDUsage_GD_<axis> (%d) axis %d\n", usage, possible_axes[axis]);
 559                                     joystick->axes[possible_axes[axis]].element = (IOHIDElementRef)CFRetain(child);
 560                                     joystick->axes[possible_axes[axis]].min_value = IOHIDElementGetLogicalMin(child);
 561                                     joystick->axes[possible_axes[axis]].max_value = IOHIDElementGetLogicalMax(child);
 562                                 }
 563                                 break;
 564                             }
 565                             default:
 566                                 FIXME("kIOHIDElementTypeInput_Axis/Misc / Unhandled GD Page usage %d\n", usage);
 567                                 break;
 568                         }
 569                         break;
 570                     }
 571                     case kHIDPage_Simulation:
 572                     {
 573                         switch(usage)
 574                         {
 575                             case kHIDUsage_Sim_Rudder:
 576                             case kHIDUsage_Sim_Throttle:
 577                             case kHIDUsage_Sim_Steering:
 578                             case kHIDUsage_Sim_Accelerator:
 579                             case kHIDUsage_Sim_Brake:
 580                             {
 581                                 int axis = axis_for_usage_Sim(usage);
 582                                 TRACE("kIOHIDElementTypeInput_Axis/Misc / kHIDUsage_Sim_<axis> (%d) axis %d\n", usage, axis);
 583                                 if (axis < 0 || joystick->axes[axis].element)
 584                                     TRACE("    ignoring\n");
 585                                 else
 586                                 {
 587                                     joystick->axes[axis].element = (IOHIDElementRef)CFRetain(child);
 588                                     joystick->axes[axis].min_value = IOHIDElementGetLogicalMin(child);
 589                                     joystick->axes[axis].max_value = IOHIDElementGetLogicalMax(child);
 590                                 }
 591                                 break;
 592                             }
 593                             default:
 594                                 FIXME("kIOHIDElementTypeInput_Axis/Misc / Unhandled Sim Page usage %d\n", usage);
 595                                 break;
 596                         }
 597                         break;
 598                     }
 599                     default:
 600                         FIXME("kIOHIDElementTypeInput_Axis/Misc / Unhandled Usage Page %d\n", usage_page);
 601                         break;
 602                 }
 603                 break;
 604             }
 605             case kIOHIDElementTypeFeature:
 606                 /* Describes input and output elements not intended for consumption by the end user. Ignoring. */
 607                 break;
 608             default:
 609                 FIXME("Unhandled type %i\n",type);
 610                 break;
 611         }
 612     }
 613 }
 614
 615 /**************************************************************************
 616  *                              button_usage_comparator
 617  */
 618 static CFComparisonResult button_usage_comparator(const void *val1, const void *val2, void *context)
 619 {
 620     IOHIDElementRef element1 = (IOHIDElementRef)val1, element2 = (IOHIDElementRef)val2;
 621     int usage1 = IOHIDElementGetUsage(element1), usage2 = IOHIDElementGetUsage(element2);
 622
 623     if (usage1 < usage2)
 624         return kCFCompareLessThan;
 625     if (usage1 > usage2)
 626         return kCFCompareGreaterThan;
 627     return kCFCompareEqualTo;
 628 }
 629
 630 /**************************************************************************
 631  *                              driver_open
 632  */
 633 LRESULT driver_open(LPSTR str, DWORD index)
 634 {
 635     if (index >= MAXJOYSTICK || joysticks[index].in_use)
 636         return 0;
 637
 638     joysticks[index].in_use = TRUE;
 639     return (LRESULT)&joysticks[index];
 640 }
 641
 642 /**************************************************************************
 643  *                              driver_close
 644  */
 645 LRESULT driver_close(DWORD_PTR device_id)
 646 {
 647     joystick_t* joystick = joystick_from_id(device_id);
 648     int i;
 649
 650     if (joystick == NULL)
 651         return 0;
 652
 653     CFRelease(joystick->element);
 654     for (i = 0; i < NUM_AXES; i++)
 655     {
 656         if (joystick->axes[i].element)
 657             CFRelease(joystick->axes[i].element);
 658     }
 659     if (joystick->buttons)
 660         CFRelease(joystick->buttons);
 661     if (joystick->hatswitch)
 662         CFRelease(joystick->hatswitch);
 663
 664     memset(joystick, 0, sizeof(*joystick));
 665     return 1;
 666 }
 667
 668 /**************************************************************************
 669  *                              open_joystick
 670  */
 671 static BOOL open_joystick(joystick_t* joystick)
 672 {
 673     CFIndex index;
 674     CFRange range;
 675
 676     if (joystick->element)
 677         return TRUE;
 678
 679     if (!device_main_elements)
 680     {
 681         find_osx_devices();
 682         if (!device_main_elements)
 683             return FALSE;
 684     }
 685
 686     index = joystick - joysticks;
 687     if (index >= CFArrayGetCount(device_main_elements))
 688         return FALSE;
 689
 690     joystick->element = (IOHIDElementRef)CFArrayGetValueAtIndex(device_main_elements, index);
 691     joystick->buttons = CFArrayCreateMutable(kCFAllocatorDefault, 0, &kCFTypeArrayCallBacks);
 692     collect_joystick_elements(joystick, joystick->element);
 693
 694     /* Sort buttons into correct order */
 695     range.location = 0;
 696     range.length = CFArrayGetCount(joystick->buttons);
 697     CFArraySortValues(joystick->buttons, range, button_usage_comparator, NULL);
 698     if (range.length > 32)
 699     {
 700         /* Delete any buttons beyond the first 32 */
 701         range.location = 32;
 702         range.length -= 32;
 703         CFArrayReplaceValues(joystick->buttons, range, NULL, 0);
 704     }
 705
 706     return TRUE;
 707 }
 708
 709
 710 /**************************************************************************
 711  *                              driver_joyGetDevCaps
 712  */
 713 LRESULT driver_joyGetDevCaps(DWORD_PTR device_id, JOYCAPSW* caps, DWORD size)
 714 {
 715     joystick_t* joystick;
 716     IOHIDDeviceRef device;
 717
 718     if ((joystick = joystick_from_id(device_id)) == NULL)
 719         return MMSYSERR_NODRIVER;
 720
 721     if (!open_joystick(joystick))
 722         return JOYERR_PARMS;
 723
 724     caps->szPname[0] = 0;
 725
 726     device = IOHIDElementGetDevice(joystick->element);
 727     if (device)
 728     {
 729         CFStringRef product_name = IOHIDDeviceGetProperty(device, CFSTR(kIOHIDProductKey));
 730         if (product_name)
 731         {
 732             CFRange range;
 733
 734             range.location = 0;
 735             range.length = min(MAXPNAMELEN - 1, CFStringGetLength(product_name));
 736             CFStringGetCharacters(product_name, range, (UniChar*)caps->szPname);
 737             caps->szPname[range.length] = 0;
 738         }
 739     }
 740
 741     caps->wMid = MM_MICROSOFT;
 742     caps->wPid = MM_PC_JOYSTICK;
 743     caps->wXmin = 0;
 744     caps->wXmax = 0xFFFF;
 745     caps->wYmin = 0;
 746     caps->wYmax = 0xFFFF;
 747     caps->wZmin = 0;
 748     caps->wZmax = joystick->axes[AXIS_Z].element ? 0xFFFF : 0;
 749     caps->wNumButtons = CFArrayGetCount(joystick->buttons);
 750     if (size == sizeof(JOYCAPSW))
 751     {
 752         int i;
 753
 754         /* complete 95 structure */
 755         caps->wRmin = 0;
 756         caps->wRmax = 0xFFFF;
 757         caps->wUmin = 0;
 758         caps->wUmax = 0xFFFF;
 759         caps->wVmin = 0;
 760         caps->wVmax = 0xFFFF;
 761         caps->wMaxAxes = 6; /* same as MS Joystick Driver */
 762         caps->wNumAxes = 0;
 763         caps->wMaxButtons = 32; /* same as MS Joystick Driver */
 764         caps->szRegKey[0] = 0;
 765         caps->szOEMVxD[0] = 0;
 766         caps->wCaps = 0;
 767
 768         for (i = 0; i < NUM_AXES; i++)
 769         {
 770             if (joystick->axes[i].element)
 771             {
 772                 caps->wNumAxes++;
 773                 switch (i)
 774                 {
 775                     case AXIS_Z:  caps->wCaps |= JOYCAPS_HASZ; break;
 776                     case AXIS_RX: caps->wCaps |= JOYCAPS_HASV; break;
 777                     case AXIS_RY: caps->wCaps |= JOYCAPS_HASU; break;
 778                     case AXIS_RZ: caps->wCaps |= JOYCAPS_HASR; break;
 779                 }
 780             }
 781         }
 782
 783         if (joystick->hatswitch)
 784             caps->wCaps |= JOYCAPS_HASPOV | JOYCAPS_POV4DIR;
 785     }
 786
 787     TRACE("name %s buttons %u axes %d caps 0x%08x\n", debugstr_w(caps->szPname), caps->wNumButtons, caps->wNumAxes, caps->wCaps);
 788
 789     return JOYERR_NOERROR;
 790 }
 791
 792 /*
 793  * Helper to get the value from an element
 794  */
 795 static LRESULT driver_getElementValue(IOHIDDeviceRef device, IOHIDElementRef element, IOHIDValueRef *pValueRef)
 796 {
 797     IOReturn ret;
 798     ret = IOHIDDeviceGetValue(device, element, pValueRef);
 799     switch (ret)
 800     {
 801         case kIOReturnSuccess:
 802             return JOYERR_NOERROR;
 803         case kIOReturnNotAttached:
 804             return JOYERR_UNPLUGGED;
 805         default:
 806             ERR("IOHIDDeviceGetValue returned 0x%x\n",ret);
 807             return JOYERR_NOCANDO;
 808     }
 809 }
 810
 811 /**************************************************************************
 812  *                              driver_joyGetPosEx
 813  */
 814 LRESULT driver_joyGetPosEx(DWORD_PTR device_id, JOYINFOEX* info)
 815 {
 816     static const struct {
 817         DWORD flag;
 818         off_t offset;
 819     } axis_map[NUM_AXES] = {
 820         { JOY_RETURNX, FIELD_OFFSET(JOYINFOEX, dwXpos) },
 821         { JOY_RETURNY, FIELD_OFFSET(JOYINFOEX, dwYpos) },
 822         { JOY_RETURNZ, FIELD_OFFSET(JOYINFOEX, dwZpos) },
 823         { JOY_RETURNV, FIELD_OFFSET(JOYINFOEX, dwVpos) },
 824         { JOY_RETURNU, FIELD_OFFSET(JOYINFOEX, dwUpos) },
 825         { JOY_RETURNR, FIELD_OFFSET(JOYINFOEX, dwRpos) },
 826     };
 827
 828     joystick_t* joystick;
 829     IOHIDDeviceRef device;
 830     CFIndex i, count;
 831     IOHIDValueRef valueRef;
 832     long value;
 833     LRESULT rc;
 834
 835     if ((joystick = joystick_from_id(device_id)) == NULL)
 836         return MMSYSERR_NODRIVER;
 837
 838     if (!open_joystick(joystick))
 839         return JOYERR_PARMS;
 840
 841     device = IOHIDElementGetDevice(joystick->element);
 842
 843     if (info->dwFlags & JOY_RETURNBUTTONS)
 844     {
 845         info->dwButtons = 0;
 846         info->dwButtonNumber = 0;
 847
 848         count = CFArrayGetCount(joystick->buttons);
 849         for (i = 0; i < count; i++)
 850         {
 851             IOHIDElementRef button = (IOHIDElementRef)CFArrayGetValueAtIndex(joystick->buttons, i);
 852             rc = driver_getElementValue(device, button, &valueRef);
 853             if (rc != JOYERR_NOERROR)
 854                 return rc;
 855             value = IOHIDValueGetIntegerValue(valueRef);
 856             if (value)
 857             {
 858                 info->dwButtons |= 1 << i;
 859                 info->dwButtonNumber++;
 860             }
 861         }
 862     }
 863
 864     for (i = 0; i < NUM_AXES; i++)
 865     {
 866         if (info->dwFlags & axis_map[i].flag)
 867         {
 868             DWORD* field = (DWORD*)((char*)info + axis_map[i].offset);
 869             if (joystick->axes[i].element)
 870             {
 871                 rc = driver_getElementValue(device, joystick->axes[i].element, &valueRef);
 872                 if (rc != JOYERR_NOERROR)
 873                     return rc;
 874                 value = IOHIDValueGetIntegerValue(valueRef) - joystick->axes[i].min_value;
 875                 *field = MulDiv(value, 0xFFFF, joystick->axes[i].max_value - joystick->axes[i].min_value);
 876             }
 877             else
 878             {
 879                 *field = 0;
 880                 info->dwFlags &= ~axis_map[i].flag;
 881             }
 882         }
 883     }
 884
 885     if (info->dwFlags & JOY_RETURNPOV)
 886     {
 887         if (joystick->hatswitch)
 888         {
 889             rc = driver_getElementValue(device, joystick->hatswitch, &valueRef);
 890             if (rc != JOYERR_NOERROR)
 891                 return rc;
 892             value = IOHIDValueGetIntegerValue(valueRef);
 893             if (value >= 8)
 894                 info->dwPOV = JOY_POVCENTERED;
 895             else
 896                 info->dwPOV = value * 4500;
 897         }
 898         else
 899         {
 900             info->dwPOV = JOY_POVCENTERED;
 901             info->dwFlags &= ~JOY_RETURNPOV;
 902         }
 903     }
 904
 905     TRACE("x: %d, y: %d, z: %d, r: %d, u: %d, v: %d, buttons: 0x%04x, pov %d, flags: 0x%04x\n",
 906           info->dwXpos, info->dwYpos, info->dwZpos, info->dwRpos, info->dwUpos, info->dwVpos, info->dwButtons, info->dwPOV, info->dwFlags);
 907
 908     return JOYERR_NOERROR;
 909 }
 910
 911 /**************************************************************************
 912  *                              driver_joyGetPos
 913  */
 914 LRESULT driver_joyGetPos(DWORD_PTR device_id, JOYINFO* info)
 915 {
 916     JOYINFOEX ji;
 917     LONG ret;
 918
 919     memset(&ji, 0, sizeof(ji));
 920
 921     ji.dwSize = sizeof(ji);
 922     ji.dwFlags = JOY_RETURNX | JOY_RETURNY | JOY_RETURNZ | JOY_RETURNBUTTONS;
 923     ret = driver_joyGetPosEx(device_id, &ji);
 924     if (ret == JOYERR_NOERROR)
 925     {
 926         info->wXpos    = ji.dwXpos;
 927         info->wYpos    = ji.dwYpos;
 928         info->wZpos    = ji.dwZpos;
 929         info->wButtons = ji.dwButtons;
 930     }
 931
 932     return ret;
 933 }
 934
 935 #endif /* HAVE_IOKIT_HID_IOHIDLIB_H */