src/mac/corefoundation/hidjoystick.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/corefoundation/joystick.cpp
   3 // Purpose:     wxJoystick class
   4 // Author:      Ryan Norton
   5 // Modified by:
   6 // Created:     2/13/2005
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Ryan Norton
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 //===========================================================================
  13 //  DECLARATIONS
  14 //===========================================================================
  15
  16 //---------------------------------------------------------------------------
  17 // Pre-compiled header stuff
  18 //---------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 //---------------------------------------------------------------------------
  24 // Guard
  25 //---------------------------------------------------------------------------
  26
  27 //we only support HID on OSX (DARWIN), since it requires DARWIN...
  28 #if wxUSE_JOYSTICK && defined(__DARWIN__) && wxUSE_THREADS
  29
  30 //---------------------------------------------------------------------------
  31 // Includes
  32 //---------------------------------------------------------------------------
  33
  34 #ifndef WX_PRECOMP
  35     #include "wx/log.h"
  36     #include "wx/event.h"   //joystick wxEvents
  37     #include "wx/window.h"  //for wxWindow to "capture" joystick
  38 #endif
  39
  40 #include "wx/joystick.h"    //...
  41 #include "wx/thread.h"      //wxThread for polling thread/ wxCriticalSection
  42
  43 //private headers
  44 #include "wx/mac/corefoundation/hid.h" //private mac hid stuff
  45
  46 //mac headers
  47 #include <CoreServices/CoreServices.h>
  48 #include <mach/mach.h>
  49 #include <mach/mach_time.h>
  50 #include <unistd.h>
  51
  52 //---------------------------------------------------------------------------
  53 // Definitions/Enumerations
  54 //---------------------------------------------------------------------------
  55
  56 #define wxJS_MAX_AXES       10 /*max number of axes*/
  57 #define wxJS_MAX_BUTTONS    40 /*max number of buttons*/
  58
  59 enum
  60 {
  61     //These are positions within the cookie array
  62     //in wxHIDJoystick that the cookies that store the axis' are
  63     wxJS_AXIS_X = 40,
  64     wxJS_AXIS_Y,
  65     wxJS_AXIS_Z,
  66     wxJS_AXIS_RUDDER,
  67     wxJS_AXIS_U,
  68     wxJS_AXIS_V,
  69 };
  70
  71 //---------------------------------------------------------------------------
  72 // wxHIDJoystick
  73 //---------------------------------------------------------------------------
  74 class wxHIDJoystick : public wxHIDDevice
  75 {
  76 public:
  77     wxHIDJoystick();
  78     virtual ~wxHIDJoystick();
  79
  80     bool Create(int nWhich);
  81     virtual void BuildCookies(CFArrayRef Array);
  82     void MakeCookies(CFArrayRef Array);
  83     IOHIDElementCookie* GetCookies();
  84     IOHIDQueueInterface** GetQueue();
  85
  86     int  m_nXMax, m_nYMax, m_nZMax, m_nRudderMax, m_nUMax, m_nVMax,
  87          m_nXMin, m_nYMin, m_nZMin, m_nRudderMin, m_nUMin, m_nVMin;
  88
  89     friend class wxJoystick;
  90 };
  91
  92 //---------------------------------------------------------------------------
  93 // wxJoystickThread
  94 //---------------------------------------------------------------------------
  95 class wxJoystickThread : public wxThread
  96 {
  97 public:
  98     wxJoystickThread(wxHIDJoystick* hid, int joystick);
  99     void* Entry();
 100     static void HIDCallback(void* target, IOReturn res, void* context, void* sender);
 101
 102 private:
 103     wxHIDJoystick*       m_hid;
 104     int       m_joystick;
 105     wxPoint   m_lastposition;
 106     int       m_axe[wxJS_MAX_AXES];
 107     int       m_buttons;
 108     wxWindow* m_catchwin;
 109     int       m_polling;
 110
 111     friend class wxJoystick;
 112 };
 113
 114 //===========================================================================
 115 //  IMPLEMENTATION
 116 //===========================================================================
 117
 118 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 119 // wxGetIntFromCFDictionary
 120 //
 121 // Helper function that gets a integer from a dictionary key
 122 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 123 void wxGetIntFromCFDictionary(CFTypeRef cfDict, CFStringRef key, int* pOut)
 124 {
 125         CFNumberGetValue(
 126           (CFNumberRef) CFDictionaryGetValue((CFDictionaryRef) cfDict,
 127                                               key),
 128                         kCFNumberIntType, pOut);
 129 }
 130
 131 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 132 //
 133 // wxJoystick
 134 //
 135 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 136
 137 IMPLEMENT_DYNAMIC_CLASS(wxJoystick, wxObject)
 138
 139 //---------------------------------------------------------------------------
 140 // wxJoystick Constructor
 141 //
 142 // 1) Initializes member variables
 143 // 2) Attempts to create the native HID joystick implementation - if none
 144 //    could be found (no joysticks, etc.) then it sets it to NULL
 145 //---------------------------------------------------------------------------
 146 wxJoystick::wxJoystick(int joystick)
 147     : m_joystick(joystick),
 148       m_thread(NULL)
 149 {
 150     m_hid = new wxHIDJoystick();
 151
 152     if (m_hid->Create(m_joystick+1)) //wxHIDDevice is 1-based while this is 0
 153     {
 154         m_thread = new wxJoystickThread(m_hid, m_joystick);
 155         m_thread->Create();
 156         m_thread->Run();
 157     }
 158     else
 159     {
 160         delete m_hid;
 161         m_hid = NULL;
 162     }
 163 }
 164
 165 //---------------------------------------------------------------------------
 166 // wxJoystick Destructor
 167 //
 168 // Releases the capture of the thread, deletes it, and deletes
 169 // the native implementation.
 170 //---------------------------------------------------------------------------
 171 wxJoystick::~wxJoystick()
 172 {
 173     ReleaseCapture();
 174     if (m_thread)
 175         m_thread->Delete();  // It's detached so it will delete itself
 176
 177     if (m_hid)
 178         delete m_hid;
 179 }
 180
 181 //---------------------------------------------------------------------------
 182 // wxJoystick::Get[XXX]Position
 183 //
 184 // Returns the value of an axis that was polled from the thread. In the
 185 // case of GetPosition returns the X and Y values in a wxPoint
 186 //---------------------------------------------------------------------------
 187 wxPoint wxJoystick::GetPosition() const
 188 {
 189     wxPoint pos(wxDefaultPosition);
 190     if (m_thread) pos = m_thread->m_lastposition;
 191     return pos;
 192 }
 193 int wxJoystick::GetZPosition() const
 194 {
 195     if (m_thread)
 196         return m_thread->m_axe[wxJS_AXIS_Z];
 197     return 0;
 198 }
 199 int wxJoystick::GetRudderPosition() const
 200 {
 201     if (m_thread)
 202         return m_thread->m_axe[wxJS_AXIS_RUDDER];
 203     return 0;
 204 }
 205 int wxJoystick::GetUPosition() const
 206 {
 207     if (m_thread)
 208         return m_thread->m_axe[wxJS_AXIS_U];
 209     return 0;
 210 }
 211 int wxJoystick::GetVPosition() const
 212 {
 213     if (m_thread)
 214         return m_thread->m_axe[wxJS_AXIS_V];
 215     return 0;
 216 }
 217
 218 //---------------------------------------------------------------------------
 219 // wxJoystick::GetButtonState
 220 //
 221 // Returns the state of the buttons in a bitmask as dictated by the
 222 // wx manual (the real work takes place in the thread, as always)
 223 //---------------------------------------------------------------------------
 224 int wxJoystick::GetButtonState() const
 225 {
 226     if (m_thread)
 227         return m_thread->m_buttons;
 228     return 0;
 229 }
 230
 231 //---------------------------------------------------------------------------
 232 // wxJoystick::IsOk
 233 //
 234 // Returns whether the joystick initialized successfully - in this case
 235 // if the native implementation doesn't exist (in constructor)
 236 //---------------------------------------------------------------------------
 237 bool wxJoystick::IsOk() const
 238 {
 239     return m_hid != NULL;
 240 }
 241
 242 //---------------------------------------------------------------------------
 243 // wxJoystick::Get[XXX](Id/Name)
 244 //
 245 // Simple accessors to the native HID implementation
 246 //---------------------------------------------------------------------------
 247 int wxJoystick::GetManufacturerId() const
 248 {
 249     return m_hid->m_nManufacturerId;
 250 }
 251
 252 int wxJoystick::GetProductId() const
 253 {
 254     return m_hid->m_nProductId;
 255 }
 256
 257 wxString wxJoystick::GetProductName() const
 258 {
 259     return m_hid->m_szProductName;
 260 }
 261
 262 //---------------------------------------------------------------------------
 263 // wxJoystick::GetNumberButtons
 264 // wxJoystick::GetNumberAxes
 265 //
 266 // Queries the joystick for an active number of buttons/axes.
 267 //
 268 // In the native HID implementation, the cookies:
 269 // 0-40     are the buttons of the joystick
 270 // 40-50    are the axes of the joystick
 271 //
 272 // These just query the native HID implementation as above.
 273 //---------------------------------------------------------------------------
 274 int wxJoystick::GetNumberButtons() const
 275 {
 276     int nCount = 0;
 277
 278     for(int nIndex = 0; nIndex < 40; ++nIndex)
 279     {
 280         if(m_hid->HasElement(nIndex))
 281             ++nCount;
 282     }
 283
 284     return nCount;
 285 }
 286 int wxJoystick::GetNumberAxes() const
 287 {
 288     int nCount = 0;
 289
 290     for(int nIndex = 40; nIndex < 50; ++nIndex)
 291     {
 292         if(m_hid->HasElement(nIndex))
 293             ++nCount;
 294     }
 295
 296     return nCount;
 297 }
 298
 299 //---------------------------------------------------------------------------
 300 // wxJoystick::GetNumberJoysticks
 301 //
 302 // Gets the number of joysticks on the system. In HID that
 303 // is all devices with the kHIDUsage_GD_Joystick or kHIDUsage_GD_GamePad
 304 // identifiers.
 305 //---------------------------------------------------------------------------
 306 int wxJoystick::GetNumberJoysticks()
 307 {
 308     return
 309         wxHIDDevice::GetCount(kHIDPage_GenericDesktop, kHIDUsage_GD_Joystick) +
 310         wxHIDDevice::GetCount(kHIDPage_GenericDesktop, kHIDUsage_GD_GamePad);
 311 }
 312
 313 //---------------------------------------------------------------------------
 314 // wxJoystick::SetCapture
 315 //
 316 // Stops sending events from the thread to the window set in
 317 // SetCapture and stops polling the joystick
 318 //---------------------------------------------------------------------------
 319 bool wxJoystick::SetCapture(wxWindow* win, int pollingFreq)
 320 {
 321     if (m_thread)
 322     {
 323         m_thread->m_catchwin = win;
 324         m_thread->m_polling = pollingFreq;
 325         return true;
 326     }
 327     return false;
 328 }
 329
 330 //---------------------------------------------------------------------------
 331 // wxJoystick::ReleaseCapture
 332 //
 333 // Stops sending events from the thread to the window set in
 334 // SetCapture and stops polling the joystick
 335 //---------------------------------------------------------------------------
 336 bool wxJoystick::ReleaseCapture()
 337 {
 338     if (m_thread)
 339     {
 340         m_thread->m_catchwin = NULL;
 341         m_thread->m_polling = 0;
 342         return true;
 343     }
 344     return false;
 345 }
 346
 347 //---------------------------------------------------------------------------
 348 // wxJoystick::Get[XXX]
 349 //
 350 // Gets the minimum and maximum values for each axis, returning 0 if the
 351 // axis doesn't exist.
 352 //---------------------------------------------------------------------------
 353 int wxJoystick::GetXMin() const
 354 {
 355     return m_hid->m_nXMin;
 356 }
 357
 358 int wxJoystick::GetYMin() const
 359 {
 360     return m_hid->m_nYMin;
 361 }
 362
 363 int wxJoystick::GetZMin() const
 364 {
 365     return m_hid->m_nZMin;
 366 }
 367
 368 int wxJoystick::GetRudderMin() const
 369 {
 370     return m_hid->m_nRudderMin;
 371 }
 372
 373 int wxJoystick::GetUMin() const
 374 {
 375     return m_hid->m_nUMin;
 376 }
 377
 378 int wxJoystick::GetVMin() const
 379 {
 380     return m_hid->m_nVMin;
 381 }
 382
 383 int wxJoystick::GetXMax() const
 384 {
 385     return m_hid->m_nXMax;
 386 }
 387
 388 int wxJoystick::GetYMax() const
 389 {
 390     return m_hid->m_nYMax;
 391 }
 392
 393 int wxJoystick::GetZMax() const
 394 {
 395     return m_hid->m_nZMax;
 396 }
 397
 398 int wxJoystick::GetRudderMax() const
 399 {
 400     return m_hid->m_nRudderMax;
 401 }
 402
 403 int wxJoystick::GetUMax() const
 404 {
 405     return m_hid->m_nUMax;
 406 }
 407
 408 int wxJoystick::GetVMax() const
 409 {
 410     return m_hid->m_nVMax;
 411 }
 412
 413 //---------------------------------------------------------------------------
 414 // wxJoystick::Get[XXX]
 415 //
 416 // Min/Max values for buttons, axes, etc.. Polling in this case is just
 417 // what the linux port has.
 418 //---------------------------------------------------------------------------
 419 int wxJoystick::GetMaxButtons() const
 420 {
 421     return wxJS_MAX_BUTTONS;
 422 }
 423
 424 int wxJoystick::GetMaxAxes() const
 425 {
 426     return wxJS_MAX_AXES;
 427 }
 428
 429 int wxJoystick::GetPollingMin() const
 430 {
 431     return 10;
 432 }
 433
 434 int wxJoystick::GetPollingMax() const
 435 {
 436     return 1000;
 437 }
 438
 439 //---------------------------------------------------------------------------
 440 // wxJoystick::Has[XXX]
 441 //
 442 // Just queries the native hid implementation if the cookie was found
 443 // when enumerating the cookies of the joystick device
 444 //---------------------------------------------------------------------------
 445 bool wxJoystick::HasZ() const
 446 {
 447     return m_hid->HasElement(wxJS_AXIS_Z);
 448 }
 449
 450 bool wxJoystick::HasRudder() const
 451 {
 452     return m_hid->HasElement(wxJS_AXIS_RUDDER);
 453 }
 454
 455 bool wxJoystick::HasU() const
 456 {
 457     return m_hid->HasElement(wxJS_AXIS_U);
 458 }
 459
 460 bool wxJoystick::HasV() const
 461 {
 462     return m_hid->HasElement(wxJS_AXIS_V);
 463 }
 464
 465 //---------------------------------------------------------------------------
 466 // UNSUPPORTED
 467 //---------------------------------------------------------------------------
 468 int wxJoystick::GetPOVPosition() const
 469 {
 470     return -1;
 471 }
 472
 473 int wxJoystick::GetPOVCTSPosition() const
 474 {
 475     return -1;
 476 }
 477
 478 int wxJoystick::GetMovementThreshold() const
 479 {
 480     return 0;
 481 }
 482
 483 void wxJoystick::SetMovementThreshold(int threshold)
 484 {
 485 }
 486
 487 bool wxJoystick::HasPOV() const
 488 {
 489     return false;
 490 }
 491
 492 bool wxJoystick::HasPOV4Dir() const
 493 {
 494     return false;
 495 }
 496
 497 bool wxJoystick::HasPOVCTS() const
 498 {
 499     return false;
 500 }
 501
 502 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 503 //
 504 // wxHIDJoystick
 505 //
 506 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 507
 508 //---------------------------------------------------------------------------
 509 // wxHIDJoystick ctor
 510 //
 511 // Initializes the min/max members
 512 //---------------------------------------------------------------------------
 513 wxHIDJoystick::wxHIDJoystick() :
 514  m_nXMax(0), m_nYMax(0), m_nZMax(0), m_nRudderMax(0), m_nUMax(0), m_nVMax(0),
 515  m_nXMin(0), m_nYMin(0), m_nZMin(0), m_nRudderMin(0), m_nUMin(0), m_nVMin(0)
 516 {
 517 }
 518
 519 //---------------------------------------------------------------------------
 520 // wxHIDJoystick dtor
 521 //
 522 // Nothing...
 523 //---------------------------------------------------------------------------
 524 wxHIDJoystick::~wxHIDJoystick()
 525 {
 526 }
 527
 528 //---------------------------------------------------------------------------
 529 // wxHIDJoystick::Create
 530 //
 531 // Creates the native HID device (joysticks are of either
 532 // kHIDUsage_GD_Joystick or kHIDUsage_GD_GamePad)
 533 //---------------------------------------------------------------------------
 534 bool wxHIDJoystick::Create(int nWhich)
 535 {
 536     int nJoysticks = GetCount(kHIDPage_GenericDesktop, kHIDUsage_GD_Joystick);
 537
 538     if (nWhich <= nJoysticks)
 539         return wxHIDDevice::Create(kHIDPage_GenericDesktop,
 540                                    kHIDUsage_GD_Joystick,
 541                                    nWhich);
 542     else
 543         nWhich -= nJoysticks;
 544
 545     int nGamePads = GetCount(kHIDPage_GenericDesktop, kHIDUsage_GD_GamePad);
 546
 547     if (nWhich <= nGamePads)
 548         return wxHIDDevice::Create(kHIDPage_GenericDesktop,
 549                                    kHIDUsage_GD_GamePad,
 550                                    nWhich);
 551     else
 552     return false;
 553 }
 554
 555 //---------------------------------------------------------------------------
 556 // wxHIDJoystick::BuildCookies
 557 // wxHIDJoystick::MakeCookies
 558 //
 559 // Sets up the cookies for the HID device (called from Create) - as
 560 // mentioned 0-40 are the buttons and 40-50 are the axes.
 561 //
 562 // MakeCookies is just a recursive function for each array within
 563 // BuildCookies.
 564 //---------------------------------------------------------------------------
 565 void wxHIDJoystick::BuildCookies(CFArrayRef Array)
 566 {
 567     InitCookies(50, true);
 568
 569     //
 570     // I wasted two hours of my life on this line :(
 571     // accidently removed it during some source cleaning...
 572     //
 573     MakeCookies(Array);
 574
 575     //paranoid debugging stuff
 576 #if 0
 577     for(int i = 0; i < 50; ++i)
 578         wxPrintf(wxT("\nVAL #%i:[%i]"), i, m_pCookies[i]);
 579 #endif
 580 }//end buildcookies
 581
 582 void wxHIDJoystick::MakeCookies(CFArrayRef Array)
 583 {
 584     int i, nUsage, nPage;
 585
 586     for (i = 0; i < CFArrayGetCount(Array); ++i)
 587     {
 588         const void* ref = CFDictionaryGetValue(
 589                 (CFDictionaryRef)CFArrayGetValueAtIndex(Array, i),
 590                 CFSTR(kIOHIDElementKey)
 591                                               );
 592
 593         if (ref != NULL)
 594         {
 595             MakeCookies((CFArrayRef) ref);
 596     }
 597         else
 598         {
 599             CFNumberGetValue(
 600                 (CFNumberRef)
 601                     CFDictionaryGetValue(
 602                         (CFDictionaryRef) CFArrayGetValueAtIndex(Array, i),
 603                         CFSTR(kIOHIDElementUsageKey)
 604                                         ),
 605                 kCFNumberIntType,
 606                 &nUsage    );
 607
 608             CFNumberGetValue(
 609                 (CFNumberRef)
 610                     CFDictionaryGetValue(
 611                         (CFDictionaryRef) CFArrayGetValueAtIndex(Array, i),
 612                         CFSTR(kIOHIDElementUsagePageKey)
 613                                         ),
 614                 kCFNumberIntType,
 615                 &nPage     );
 616
 617 #if 0
 618             wxLogSysError(wxT("[%i][%i]"), nUsage, nPage);
 619 #endif
 620             if (nPage == kHIDPage_Button && nUsage <= 40)
 621                 AddCookieInQueue(CFArrayGetValueAtIndex(Array, i), nUsage-1 );
 622             else if (nPage == kHIDPage_GenericDesktop)
 623             {
 624                 //axis...
 625                 switch(nUsage)
 626                 {
 627                     case kHIDUsage_GD_X:
 628                         AddCookieInQueue(CFArrayGetValueAtIndex(Array, i), wxJS_AXIS_X);
 629                         wxGetIntFromCFDictionary(CFArrayGetValueAtIndex(Array, i),
 630                                                  CFSTR(kIOHIDElementMaxKey),
 631                                                  &m_nXMax);
 632                         wxGetIntFromCFDictionary(CFArrayGetValueAtIndex(Array, i),
 633                                                  CFSTR(kIOHIDElementMinKey),
 634                                                  &m_nXMin);
 635                         break;
 636                     case kHIDUsage_GD_Y:
 637                         AddCookieInQueue(CFArrayGetValueAtIndex(Array, i), wxJS_AXIS_Y);
 638                         wxGetIntFromCFDictionary(CFArrayGetValueAtIndex(Array, i),
 639                                                  CFSTR(kIOHIDElementMaxKey),
 640                                                  &m_nYMax);
 641                         wxGetIntFromCFDictionary(CFArrayGetValueAtIndex(Array, i),
 642                                                  CFSTR(kIOHIDElementMinKey),
 643                                                  &m_nYMin);
 644                         break;
 645                     case kHIDUsage_GD_Z:
 646                         AddCookieInQueue(CFArrayGetValueAtIndex(Array, i), wxJS_AXIS_Z);
 647                         wxGetIntFromCFDictionary(CFArrayGetValueAtIndex(Array, i),
 648                                                  CFSTR(kIOHIDElementMaxKey),
 649                                                  &m_nZMax);
 650                         wxGetIntFromCFDictionary(CFArrayGetValueAtIndex(Array, i),
 651                                                  CFSTR(kIOHIDElementMinKey),
 652                                                  &m_nZMin);
 653                         break;
 654                     default:
 655                         break;
 656                 }
 657             }
 658             else if (nPage == kHIDPage_Simulation && nUsage == kHIDUsage_Sim_Rudder)
 659             {
 660                 //rudder...
 661                 AddCookieInQueue(CFArrayGetValueAtIndex(Array, i), wxJS_AXIS_RUDDER );
 662                 wxGetIntFromCFDictionary(CFArrayGetValueAtIndex(Array, i),
 663                                          CFSTR(kIOHIDElementMaxKey),
 664                                          &m_nRudderMax);
 665                 wxGetIntFromCFDictionary(CFArrayGetValueAtIndex(Array, i),
 666                                          CFSTR(kIOHIDElementMinKey),
 667                                          &m_nRudderMin);
 668             }
 669         }
 670     }
 671 }
 672
 673 //---------------------------------------------------------------------------
 674 // wxHIDJoystick::Get[XXX]
 675 //
 676 // Simple accessors so that the HID callback and the thread procedure
 677 // can access members from wxHIDDevice (our parent here).
 678 //---------------------------------------------------------------------------
 679 IOHIDElementCookie* wxHIDJoystick::GetCookies()
 680 {   return m_pCookies;  }
 681 IOHIDQueueInterface** wxHIDJoystick::GetQueue()
 682 {   return m_ppQueue;   }
 683
 684 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 685 //
 686 // wxJoystickThread
 687 //
 688 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 689
 690 //---------------------------------------------------------------------------
 691 // wxJoystickThread Constructor
 692 //
 693 // Just initializes members
 694 //---------------------------------------------------------------------------
 695 wxJoystickThread::wxJoystickThread(wxHIDJoystick* hid, int joystick)
 696     : m_hid(hid),
 697       m_joystick(joystick),
 698       m_lastposition(127,127),
 699       m_buttons(0),
 700       m_catchwin(NULL),
 701       m_polling(0)
 702 {
 703     memset(m_axe, 0, sizeof(int) * wxJS_MAX_AXES);
 704 }
 705
 706 //---------------------------------------------------------------------------
 707 // wxJoystickThread::Entry
 708 //
 709 // Thread procedure
 710 //
 711 // Runs a CFRunLoop for polling. Basically, it sets the HID queue to
 712 // call wxJoystickThread::HIDCallback in the context of this thread
 713 // when something changes on the device. It polls as long as the user
 714 // wants, or a certain amount if the user wants to "block". Note that
 715 // we don't actually block here since this is in a secondary thread.
 716 //---------------------------------------------------------------------------
 717 void* wxJoystickThread::Entry()
 718 {
 719     CFRunLoopSourceRef pRLSource = NULL;
 720
 721     if ((*m_hid->GetQueue())->createAsyncEventSource(
 722                     m_hid->GetQueue(), &pRLSource) != kIOReturnSuccess )
 723     {
 724         wxLogSysError(wxT("Couldn't create async event source"));
 725         return NULL;
 726     }
 727
 728     wxASSERT(pRLSource != NULL);
 729
 730     //attach runloop source to main run loop in thread
 731     CFRunLoopRef pRL = CFRunLoopGetCurrent();
 732     CFRunLoopAddSource(pRL, pRLSource, kCFRunLoopDefaultMode);
 733     wxASSERT( CFRunLoopContainsSource(pRL, pRLSource, kCFRunLoopDefaultMode) );
 734
 735
 736     if( (*m_hid->GetQueue())->setEventCallout(m_hid->GetQueue(),
 737           wxJoystickThread::HIDCallback, this, this) != kIOReturnSuccess )
 738     {
 739         wxLogSysError(wxT("Could not set event callout for queue"));
 740         return NULL;
 741     }
 742
 743     if( (*m_hid->GetQueue())->start(m_hid->GetQueue()) != kIOReturnSuccess )
 744     {
 745         wxLogSysError(wxT("Could not start queue"));
 746         return NULL;
 747     }
 748
 749     double dTime;
 750
 751     while(true)
 752     {
 753         if (TestDestroy())
 754             break;
 755
 756         if (m_polling)
 757             dTime = 0.0001 * m_polling;
 758         else
 759             dTime = 0.0001 * 10;  // check at least every 10 msec in "blocking" case
 760
 761         //true just "handles and returns" - false forces it to stay the time
 762         //amount
 763 #if 1
 764         CFRunLoopRunInMode(kCFRunLoopDefaultMode, dTime, true);
 765 #else
 766         IOReturn ret = NULL;
 767         HIDCallback(this, ret, this, this);
 768         Sleep(3000);
 769 #endif
 770     }
 771
 772     wxASSERT( CFRunLoopContainsSource(pRL, pRLSource, kCFRunLoopDefaultMode) );
 773
 774     CFRunLoopRemoveSource(pRL, pRLSource, kCFRunLoopDefaultMode);
 775     CFRelease(pRLSource);
 776
 777     return NULL;
 778 }
 779
 780 //---------------------------------------------------------------------------
 781 // wxJoystickThread::HIDCallback (static)
 782 //
 783 // Callback for the native HID device when it recieves input.
 784 //
 785 // This is where the REAL dirty work gets done.
 786 //
 787 // 1) Loops through each event the queue has recieved
 788 // 2) First, checks if the thread that is running the loop for
 789 //    the polling has ended - if so it breaks out
 790 // 3) Next, it checks if there was an error getting this event from
 791 //    the HID queue, if there was, it logs an error and returns
 792 // 4) Now it does the real dirty work by getting the button states
 793 //    from cookies 0-40 and axes positions/states from cookies 40-50
 794 //    in the native HID device by quering cookie values.
 795 // 5) Sends the event to the polling window (if any)
 796 // 6) Gets the next event and goes back to (1)
 797 //---------------------------------------------------------------------------
 798 /*static*/ void wxJoystickThread::HIDCallback(void* target, IOReturn res,
 799                                               void* context, void* sender)
 800 {
 801     IOHIDEventStruct hidevent;
 802     AbsoluteTime bogustime = {0,0};
 803     IOReturn ret;
 804     wxJoystickThread* pThis = (wxJoystickThread*) context;
 805     wxHIDJoystick* m_hid = pThis->m_hid;
 806
 807     //Get the "first" event from the queue
 808     //bogustime tells it we don't care at what time to start
 809     //where it gets the next from
 810     ret = (*m_hid->GetQueue())->getNextEvent(m_hid->GetQueue(),
 811                     &hidevent, bogustime, 0);
 812
 813     while (ret != kIOReturnUnderrun)
 814     {
 815         if (pThis->TestDestroy())
 816             break;
 817
 818         if(ret != kIOReturnSuccess)
 819         {
 820             wxLogSysError(wxString::Format(wxT("wxJoystick Error:[%i]"), ret));
 821             return;
 822         }
 823
 824         wxJoystickEvent wxevent;
 825
 826         //Find the cookie that changed
 827         int nIndex = 0;
 828         IOHIDElementCookie* pCookies = m_hid->GetCookies();
 829         while(nIndex < 50)
 830         {
 831             if(hidevent.elementCookie == pCookies[nIndex])
 832                 break;
 833
 834             ++nIndex;
 835         }
 836
 837         //debugging stuff
 838 #if 0
 839         if(nIndex == 50)
 840         {
 841             wxLogSysError(wxString::Format(wxT("wxJoystick Out Of Bounds Error")));
 842             break;
 843         }
 844 #endif
 845
 846         //is the cookie a button?
 847         if (nIndex < 40)
 848         {
 849             if (hidevent.value)
 850             {
 851                 pThis->m_buttons |= (1 << nIndex);
 852                 wxevent.SetEventType(wxEVT_JOY_BUTTON_DOWN);
 853             }
 854             else
 855             {
 856                 pThis->m_buttons &= ~(1 << nIndex);
 857                 wxevent.SetEventType(wxEVT_JOY_BUTTON_UP);
 858             }
 859
 860             wxevent.SetButtonChange(nIndex+1);
 861         }
 862         else if (nIndex == wxJS_AXIS_X)
 863         {
 864             pThis->m_lastposition.x = hidevent.value;
 865             wxevent.SetEventType(wxEVT_JOY_MOVE);
 866             pThis->m_axe[0] = hidevent.value;
 867         }
 868         else if (nIndex == wxJS_AXIS_Y)
 869         {
 870             pThis->m_lastposition.y = hidevent.value;
 871             wxevent.SetEventType(wxEVT_JOY_MOVE);
 872             pThis->m_axe[1] = hidevent.value;
 873         }
 874         else if (nIndex == wxJS_AXIS_Z)
 875         {
 876             wxevent.SetEventType(wxEVT_JOY_ZMOVE);
 877             pThis->m_axe[2] = hidevent.value;
 878         }
 879         else
 880             wxevent.SetEventType(wxEVT_JOY_MOVE);
 881
 882         Nanoseconds timestamp = AbsoluteToNanoseconds(hidevent.timestamp);
 883
 884         wxULongLong llTime(timestamp.hi, timestamp.lo);
 885
 886         llTime /= 1000000;
 887
 888         wxevent.SetTimestamp(llTime.GetValue());
 889         wxevent.SetJoystick(pThis->m_joystick);
 890         wxevent.SetButtonState(pThis->m_buttons);
 891         wxevent.SetPosition(pThis->m_lastposition);
 892         wxevent.SetZPosition(pThis->m_axe[2]);
 893         wxevent.SetEventObject(pThis->m_catchwin);
 894
 895         if (pThis->m_catchwin)
 896             pThis->m_catchwin->AddPendingEvent(wxevent);
 897
 898         ret = (*m_hid->GetQueue())->getNextEvent(m_hid->GetQueue(),
 899                     &hidevent, bogustime, 0);
 900     }
 901 }
 902
 903 #endif // wxUSE_JOYSTICK && defined(__DARWIN__)