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   1 /*  DirectInput Generic Joystick device
   2  *
   3  * Copyright 1998 Marcus Meissner
   4  * Copyright 1998,1999 Lionel Ulmer
   5  * Copyright 2000-2001 TransGaming Technologies Inc.
   6  * Copyright 2009 Aric Stewart, CodeWeavers
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 /*
  24  * To Do:
  25  *      dead zone
  26  *      force feedback
  27  */
  28
  29 #include "joystick_private.h"
  30 #include "wine/debug.h"
  31 #include "winreg.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(dinput);
  34
  35 static inline JoystickGenericImpl *impl_from_IDirectInputDevice8A(IDirectInputDevice8A *iface)
  36 {
  37     return CONTAINING_RECORD(CONTAINING_RECORD(iface, IDirectInputDeviceImpl, IDirectInputDevice8A_iface), JoystickGenericImpl, base);
  38 }
  39 static inline JoystickGenericImpl *impl_from_IDirectInputDevice8W(IDirectInputDevice8W *iface)
  40 {
  41     return CONTAINING_RECORD(CONTAINING_RECORD(iface, IDirectInputDeviceImpl, IDirectInputDevice8W_iface), JoystickGenericImpl, base);
  42 }
  43 static inline IDirectInputDevice8A *IDirectInputDevice8A_from_impl(JoystickGenericImpl *This)
  44 {
  45     return &This->base.IDirectInputDevice8A_iface;
  46 }
  47 static inline IDirectInputDevice8W *IDirectInputDevice8W_from_impl(JoystickGenericImpl *This)
  48 {
  49     return &This->base.IDirectInputDevice8W_iface;
  50 }
  51
  52 /******************************************************************************
  53   *     SetProperty : change input device properties
  54   */
  55 HRESULT WINAPI JoystickWGenericImpl_SetProperty(LPDIRECTINPUTDEVICE8W iface, REFGUID rguid, LPCDIPROPHEADER ph)
  56 {
  57     JoystickGenericImpl *This = impl_from_IDirectInputDevice8W(iface);
  58     DWORD i;
  59
  60     TRACE("(%p,%s,%p)\n",This,debugstr_guid(rguid),ph);
  61
  62     if (ph == NULL) {
  63         WARN("invalid parameter: ph == NULL\n");
  64         return DIERR_INVALIDPARAM;
  65     }
  66
  67     if (TRACE_ON(dinput))
  68         _dump_DIPROPHEADER(ph);
  69
  70     if (IS_DIPROP(rguid)) {
  71         switch (LOWORD(rguid)) {
  72         case (DWORD_PTR)DIPROP_RANGE: {
  73             LPCDIPROPRANGE pr = (LPCDIPROPRANGE)ph;
  74             if (ph->dwHow == DIPH_DEVICE) {
  75                 TRACE("proprange(%d,%d) all\n", pr->lMin, pr->lMax);
  76                 for (i = 0; i < This->base.data_format.wine_df->dwNumObjs; i++) {
  77                     This->props[i].lMin = pr->lMin;
  78                     This->props[i].lMax = pr->lMax;
  79                 }
  80             } else {
  81                 int obj = find_property(&This->base.data_format, ph);
  82
  83                 TRACE("proprange(%d,%d) obj=%d\n", pr->lMin, pr->lMax, obj);
  84                 if (obj >= 0) {
  85                     This->props[obj].lMin = pr->lMin;
  86                     This->props[obj].lMax = pr->lMax;
  87                     return DI_OK;
  88                 }
  89             }
  90             break;
  91         }
  92         case (DWORD_PTR)DIPROP_DEADZONE: {
  93             LPCDIPROPDWORD pd = (LPCDIPROPDWORD)ph;
  94             if (ph->dwHow == DIPH_DEVICE) {
  95                 TRACE("deadzone(%d) all\n", pd->dwData);
  96                 for (i = 0; i < This->base.data_format.wine_df->dwNumObjs; i++)
  97                     This->props[i].lDeadZone  = pd->dwData;
  98             } else {
  99                 int obj = find_property(&This->base.data_format, ph);
 100
 101                 TRACE("deadzone(%d) obj=%d\n", pd->dwData, obj);
 102                 if (obj >= 0) {
 103                     This->props[obj].lDeadZone  = pd->dwData;
 104                     return DI_OK;
 105                 }
 106             }
 107             break;
 108         }
 109         case (DWORD_PTR)DIPROP_SATURATION: {
 110             LPCDIPROPDWORD pd = (LPCDIPROPDWORD)ph;
 111             if (ph->dwHow == DIPH_DEVICE) {
 112                 TRACE("saturation(%d) all\n", pd->dwData);
 113                 for (i = 0; i < This->base.data_format.wine_df->dwNumObjs; i++)
 114                     This->props[i].lSaturation = pd->dwData;
 115             } else {
 116                 int obj = find_property(&This->base.data_format, ph);
 117
 118                 TRACE("saturation(%d) obj=%d\n", pd->dwData, obj);
 119                 if (obj >= 0) {
 120                     This->props[obj].lSaturation = pd->dwData;
 121                     return DI_OK;
 122                 }
 123             }
 124             break;
 125         }
 126         default:
 127             return IDirectInputDevice2WImpl_SetProperty(iface, rguid, ph);
 128         }
 129     }
 130
 131     return DI_OK;
 132 }
 133
 134 HRESULT WINAPI JoystickAGenericImpl_SetProperty(LPDIRECTINPUTDEVICE8A iface, REFGUID rguid, LPCDIPROPHEADER ph)
 135 {
 136     JoystickGenericImpl *This = impl_from_IDirectInputDevice8A(iface);
 137     return JoystickWGenericImpl_SetProperty(IDirectInputDevice8W_from_impl(This), rguid, ph);
 138 }
 139
 140 void _dump_DIDEVCAPS(const DIDEVCAPS *lpDIDevCaps)
 141 {
 142     TRACE("dwSize: %d\n", lpDIDevCaps->dwSize);
 143     TRACE("dwFlags: %08x\n", lpDIDevCaps->dwFlags);
 144     TRACE("dwDevType: %08x %s\n", lpDIDevCaps->dwDevType,
 145           lpDIDevCaps->dwDevType == DIDEVTYPE_DEVICE ? "DIDEVTYPE_DEVICE" :
 146           lpDIDevCaps->dwDevType == DIDEVTYPE_DEVICE ? "DIDEVTYPE_DEVICE" :
 147           lpDIDevCaps->dwDevType == DIDEVTYPE_MOUSE ? "DIDEVTYPE_MOUSE" :
 148           lpDIDevCaps->dwDevType == DIDEVTYPE_KEYBOARD ? "DIDEVTYPE_KEYBOARD" :
 149           lpDIDevCaps->dwDevType == DIDEVTYPE_JOYSTICK ? "DIDEVTYPE_JOYSTICK" :
 150           lpDIDevCaps->dwDevType == DIDEVTYPE_HID ? "DIDEVTYPE_HID" : "UNKNOWN");
 151     TRACE("dwAxes: %d\n", lpDIDevCaps->dwAxes);
 152     TRACE("dwButtons: %d\n", lpDIDevCaps->dwButtons);
 153     TRACE("dwPOVs: %d\n", lpDIDevCaps->dwPOVs);
 154     if (lpDIDevCaps->dwSize > sizeof(DIDEVCAPS_DX3)) {
 155         TRACE("dwFFSamplePeriod: %d\n", lpDIDevCaps->dwFFSamplePeriod);
 156         TRACE("dwFFMinTimeResolution: %d\n", lpDIDevCaps->dwFFMinTimeResolution);
 157         TRACE("dwFirmwareRevision: %d\n", lpDIDevCaps->dwFirmwareRevision);
 158         TRACE("dwHardwareRevision: %d\n", lpDIDevCaps->dwHardwareRevision);
 159         TRACE("dwFFDriverVersion: %d\n", lpDIDevCaps->dwFFDriverVersion);
 160     }
 161 }
 162
 163 HRESULT WINAPI JoystickWGenericImpl_GetCapabilities(LPDIRECTINPUTDEVICE8W iface, LPDIDEVCAPS lpDIDevCaps)
 164 {
 165     JoystickGenericImpl *This = impl_from_IDirectInputDevice8W(iface);
 166     int size;
 167
 168     TRACE("%p->(%p)\n",iface,lpDIDevCaps);
 169
 170     if (lpDIDevCaps == NULL) {
 171         WARN("invalid pointer\n");
 172         return E_POINTER;
 173     }
 174
 175     size = lpDIDevCaps->dwSize;
 176
 177     if (!(size == sizeof(DIDEVCAPS) || size == sizeof(DIDEVCAPS_DX3))) {
 178         WARN("invalid parameter\n");
 179         return DIERR_INVALIDPARAM;
 180     }
 181
 182     CopyMemory(lpDIDevCaps, &This->devcaps, size);
 183     lpDIDevCaps->dwSize = size;
 184
 185     if (TRACE_ON(dinput))
 186         _dump_DIDEVCAPS(lpDIDevCaps);
 187
 188     return DI_OK;
 189 }
 190
 191 HRESULT WINAPI JoystickAGenericImpl_GetCapabilities(LPDIRECTINPUTDEVICE8A iface, LPDIDEVCAPS lpDIDevCaps)
 192 {
 193     JoystickGenericImpl *This = impl_from_IDirectInputDevice8A(iface);
 194     return JoystickWGenericImpl_GetCapabilities(IDirectInputDevice8W_from_impl(This), lpDIDevCaps);
 195 }
 196
 197 /******************************************************************************
 198   *     GetObjectInfo : get object info
 199   */
 200 HRESULT WINAPI JoystickWGenericImpl_GetObjectInfo(LPDIRECTINPUTDEVICE8W iface,
 201         LPDIDEVICEOBJECTINSTANCEW pdidoi, DWORD dwObj, DWORD dwHow)
 202 {
 203     static const WCHAR axisW[] = {'A','x','i','s',' ','%','d',0};
 204     static const WCHAR povW[] = {'P','O','V',' ','%','d',0};
 205     static const WCHAR buttonW[] = {'B','u','t','t','o','n',' ','%','d',0};
 206     HRESULT res;
 207
 208     res = IDirectInputDevice2WImpl_GetObjectInfo(iface, pdidoi, dwObj, dwHow);
 209     if (res != DI_OK) return res;
 210
 211     if      (pdidoi->dwType & DIDFT_AXIS)
 212         sprintfW(pdidoi->tszName, axisW, DIDFT_GETINSTANCE(pdidoi->dwType));
 213     else if (pdidoi->dwType & DIDFT_POV)
 214         sprintfW(pdidoi->tszName, povW, DIDFT_GETINSTANCE(pdidoi->dwType));
 215     else if (pdidoi->dwType & DIDFT_BUTTON)
 216         sprintfW(pdidoi->tszName, buttonW, DIDFT_GETINSTANCE(pdidoi->dwType));
 217
 218     _dump_OBJECTINSTANCEW(pdidoi);
 219     return res;
 220 }
 221
 222 HRESULT WINAPI JoystickAGenericImpl_GetObjectInfo(LPDIRECTINPUTDEVICE8A iface,
 223         LPDIDEVICEOBJECTINSTANCEA pdidoi, DWORD dwObj, DWORD dwHow)
 224 {
 225     JoystickGenericImpl *This = impl_from_IDirectInputDevice8A(iface);
 226     HRESULT res;
 227     DIDEVICEOBJECTINSTANCEW didoiW;
 228     DWORD dwSize = pdidoi->dwSize;
 229
 230     didoiW.dwSize = sizeof(didoiW);
 231     res = JoystickWGenericImpl_GetObjectInfo(IDirectInputDevice8W_from_impl(This), &didoiW, dwObj, dwHow);
 232     if (res != DI_OK) return res;
 233
 234     memset(pdidoi, 0, pdidoi->dwSize);
 235     memcpy(pdidoi, &didoiW, FIELD_OFFSET(DIDEVICEOBJECTINSTANCEW, tszName));
 236     pdidoi->dwSize = dwSize;
 237     WideCharToMultiByte(CP_ACP, 0, didoiW.tszName, -1, pdidoi->tszName,
 238                         sizeof(pdidoi->tszName), NULL, NULL);
 239
 240     return res;
 241 }
 242
 243 /******************************************************************************
 244   *     GetProperty : get input device properties
 245   */
 246 HRESULT WINAPI JoystickWGenericImpl_GetProperty(LPDIRECTINPUTDEVICE8W iface, REFGUID rguid, LPDIPROPHEADER pdiph)
 247 {
 248     JoystickGenericImpl *This = impl_from_IDirectInputDevice8W(iface);
 249
 250     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(rguid), pdiph);
 251
 252     if (TRACE_ON(dinput))
 253         _dump_DIPROPHEADER(pdiph);
 254
 255     if (IS_DIPROP(rguid)) {
 256         switch (LOWORD(rguid)) {
 257         case (DWORD_PTR) DIPROP_RANGE: {
 258             LPDIPROPRANGE pr = (LPDIPROPRANGE)pdiph;
 259             int obj = find_property(&This->base.data_format, pdiph);
 260
 261             /* The app is querying the current range of the axis
 262              * return the lMin and lMax values */
 263             if (obj >= 0) {
 264                 pr->lMin = This->props[obj].lMin;
 265                 pr->lMax = This->props[obj].lMax;
 266                 TRACE("range(%d, %d) obj=%d\n", pr->lMin, pr->lMax, obj);
 267                 return DI_OK;
 268             }
 269             break;
 270         }
 271         case (DWORD_PTR) DIPROP_DEADZONE: {
 272             LPDIPROPDWORD pd = (LPDIPROPDWORD)pdiph;
 273             int obj = find_property(&This->base.data_format, pdiph);
 274
 275             if (obj >= 0) {
 276                 pd->dwData = This->props[obj].lDeadZone;
 277                 TRACE("deadzone(%d) obj=%d\n", pd->dwData, obj);
 278                 return DI_OK;
 279             }
 280             break;
 281         }
 282         case (DWORD_PTR) DIPROP_SATURATION: {
 283             LPDIPROPDWORD pd = (LPDIPROPDWORD)pdiph;
 284             int obj = find_property(&This->base.data_format, pdiph);
 285
 286             if (obj >= 0) {
 287                 pd->dwData = This->props[obj].lSaturation;
 288                 TRACE("saturation(%d) obj=%d\n", pd->dwData, obj);
 289                 return DI_OK;
 290             }
 291             break;
 292         }
 293         default:
 294             return IDirectInputDevice2WImpl_GetProperty(iface, rguid, pdiph);
 295         }
 296     }
 297
 298     return DI_OK;
 299 }
 300
 301 HRESULT WINAPI JoystickAGenericImpl_GetProperty(LPDIRECTINPUTDEVICE8A iface, REFGUID rguid, LPDIPROPHEADER pdiph)
 302 {
 303     JoystickGenericImpl *This = impl_from_IDirectInputDevice8A(iface);
 304     return JoystickWGenericImpl_GetProperty(IDirectInputDevice8W_from_impl(This), rguid, pdiph);
 305 }
 306
 307 /******************************************************************************
 308   *     GetDeviceInfo : get information about a device's identity
 309   */
 310 HRESULT WINAPI JoystickAGenericImpl_GetDeviceInfo(
 311     LPDIRECTINPUTDEVICE8A iface,
 312     LPDIDEVICEINSTANCEA pdidi)
 313 {
 314     JoystickGenericImpl *This = impl_from_IDirectInputDevice8A(iface);
 315
 316     TRACE("(%p,%p)\n", iface, pdidi);
 317
 318     if (pdidi == NULL) {
 319         WARN("invalid pointer\n");
 320         return E_POINTER;
 321     }
 322
 323     if ((pdidi->dwSize != sizeof(DIDEVICEINSTANCE_DX3A)) &&
 324         (pdidi->dwSize != sizeof(DIDEVICEINSTANCEA))) {
 325         WARN("invalid parameter: pdidi->dwSize = %d\n", pdidi->dwSize);
 326         return DIERR_INVALIDPARAM;
 327     }
 328
 329     /* Return joystick */
 330     pdidi->guidInstance = This->guidInstance;
 331     pdidi->guidProduct = This->guidProduct;
 332     /* we only support traditional joysticks for now */
 333     pdidi->dwDevType = This->devcaps.dwDevType;
 334     strcpy(pdidi->tszInstanceName, "Joystick");
 335     strcpy(pdidi->tszProductName, This->name);
 336     if (pdidi->dwSize > sizeof(DIDEVICEINSTANCE_DX3A)) {
 337         pdidi->guidFFDriver = GUID_NULL;
 338         pdidi->wUsagePage = 0;
 339         pdidi->wUsage = 0;
 340     }
 341
 342     return DI_OK;
 343 }
 344
 345 /******************************************************************************
 346   *     GetDeviceInfo : get information about a device's identity
 347   */
 348 HRESULT WINAPI JoystickWGenericImpl_GetDeviceInfo(
 349     LPDIRECTINPUTDEVICE8W iface,
 350     LPDIDEVICEINSTANCEW pdidi)
 351 {
 352     JoystickGenericImpl *This = impl_from_IDirectInputDevice8W(iface);
 353
 354     TRACE("(%p,%p)\n", iface, pdidi);
 355
 356     if ((pdidi->dwSize != sizeof(DIDEVICEINSTANCE_DX3W)) &&
 357         (pdidi->dwSize != sizeof(DIDEVICEINSTANCEW))) {
 358         WARN("invalid parameter: pdidi->dwSize = %d\n", pdidi->dwSize);
 359         return DIERR_INVALIDPARAM;
 360     }
 361
 362     /* Return joystick */
 363     pdidi->guidInstance = This->guidInstance;
 364     pdidi->guidProduct = This->guidProduct;
 365     /* we only support traditional joysticks for now */
 366     pdidi->dwDevType = This->devcaps.dwDevType;
 367     MultiByteToWideChar(CP_ACP, 0, "Joystick", -1, pdidi->tszInstanceName, MAX_PATH);
 368     MultiByteToWideChar(CP_ACP, 0, This->name, -1, pdidi->tszProductName, MAX_PATH);
 369     if (pdidi->dwSize > sizeof(DIDEVICEINSTANCE_DX3W)) {
 370         pdidi->guidFFDriver = GUID_NULL;
 371         pdidi->wUsagePage = 0;
 372         pdidi->wUsage = 0;
 373     }
 374
 375     return DI_OK;
 376 }
 377
 378 HRESULT WINAPI JoystickWGenericImpl_Poll(LPDIRECTINPUTDEVICE8W iface)
 379 {
 380     JoystickGenericImpl *This = impl_from_IDirectInputDevice8W(iface);
 381
 382     TRACE("(%p)\n",This);
 383
 384     if (!This->base.acquired) {
 385         WARN("not acquired\n");
 386         return DIERR_NOTACQUIRED;
 387     }
 388
 389     This->joy_polldev(IDirectInputDevice8A_from_impl(This));
 390     return DI_OK;
 391 }
 392
 393 HRESULT WINAPI JoystickAGenericImpl_Poll(LPDIRECTINPUTDEVICE8A iface)
 394 {
 395     JoystickGenericImpl *This = impl_from_IDirectInputDevice8A(iface);
 396     return JoystickWGenericImpl_Poll(IDirectInputDevice8W_from_impl(This));
 397 }
 398
 399 /******************************************************************************
 400   *     GetDeviceState : returns the "state" of the joystick.
 401   *
 402   */
 403 HRESULT WINAPI JoystickWGenericImpl_GetDeviceState(LPDIRECTINPUTDEVICE8W iface, DWORD len, LPVOID ptr)
 404 {
 405     JoystickGenericImpl *This = impl_from_IDirectInputDevice8W(iface);
 406
 407     TRACE("(%p,0x%08x,%p)\n", This, len, ptr);
 408
 409     if (!This->base.acquired) {
 410         WARN("not acquired\n");
 411         return DIERR_NOTACQUIRED;
 412     }
 413
 414     /* update joystick state */
 415     This->joy_polldev(IDirectInputDevice8A_from_impl(This));
 416
 417     /* convert and copy data to user supplied buffer */
 418     fill_DataFormat(ptr, len, &This->js, &This->base.data_format);
 419
 420     return DI_OK;
 421 }
 422
 423 HRESULT WINAPI JoystickAGenericImpl_GetDeviceState(LPDIRECTINPUTDEVICE8A iface, DWORD len, LPVOID ptr)
 424 {
 425     JoystickGenericImpl *This = impl_from_IDirectInputDevice8A(iface);
 426     return JoystickWGenericImpl_GetDeviceState(IDirectInputDevice8W_from_impl(This), len, ptr);
 427 }
 428
 429
 430 HRESULT WINAPI JoystickWGenericImpl_BuildActionMap(LPDIRECTINPUTDEVICE8W iface,
 431                                                    LPDIACTIONFORMATW lpdiaf,
 432                                                    LPCWSTR lpszUserName,
 433                                                    DWORD dwFlags)
 434 {
 435     FIXME("(%p)->(%p,%s,%08x): semi-stub !\n", iface, lpdiaf, debugstr_w(lpszUserName), dwFlags);
 436
 437     return DI_NOEFFECT;
 438 }
 439
 440 HRESULT WINAPI JoystickAGenericImpl_BuildActionMap(LPDIRECTINPUTDEVICE8A iface,
 441                                                    LPDIACTIONFORMATA lpdiaf,
 442                                                    LPCSTR lpszUserName,
 443                                                    DWORD dwFlags)
 444 {
 445     JoystickGenericImpl *This = impl_from_IDirectInputDevice8A(iface);
 446     DIACTIONFORMATW diafW;
 447     HRESULT hr;
 448
 449     diafW.rgoAction = HeapAlloc(GetProcessHeap(), 0, sizeof(DIACTIONW)*lpdiaf->dwNumActions);
 450     _copy_diactionformatAtoW(&diafW, lpdiaf);
 451
 452     hr = JoystickWGenericImpl_BuildActionMap(&This->base.IDirectInputDevice8W_iface, &diafW, NULL, dwFlags);
 453
 454     _copy_diactionformatWtoA(lpdiaf, &diafW);
 455     HeapFree(GetProcessHeap(), 0, diafW.rgoAction);
 456
 457     return hr;
 458 }
 459
 460 HRESULT WINAPI JoystickWGenericImpl_SetActionMap(LPDIRECTINPUTDEVICE8W iface,
 461                                                  LPDIACTIONFORMATW lpdiaf,
 462                                                  LPCWSTR lpszUserName,
 463                                                  DWORD dwFlags)
 464 {
 465     FIXME("(%p)->(%p,%s,%08x): semi-stub !\n", iface, lpdiaf, debugstr_w(lpszUserName), dwFlags);
 466
 467     return DI_NOEFFECT;
 468 }
 469
 470 HRESULT WINAPI JoystickAGenericImpl_SetActionMap(LPDIRECTINPUTDEVICE8A iface,
 471                                                  LPDIACTIONFORMATA lpdiaf,
 472                                                  LPCSTR lpszUserName,
 473                                                  DWORD dwFlags)
 474 {
 475     JoystickGenericImpl *This = impl_from_IDirectInputDevice8A(iface);
 476     DIACTIONFORMATW diafW;
 477     HRESULT hr;
 478
 479     diafW.rgoAction = HeapAlloc(GetProcessHeap(), 0, sizeof(DIACTIONW)*lpdiaf->dwNumActions);
 480     _copy_diactionformatAtoW(&diafW, lpdiaf);
 481
 482     hr = JoystickWGenericImpl_SetActionMap(&This->base.IDirectInputDevice8W_iface, &diafW, NULL, dwFlags);
 483
 484     HeapFree(GetProcessHeap(), 0, diafW.rgoAction);
 485
 486     return hr;
 487 }
 488
 489 /*
 490  * This maps the read value (from the input event) to a value in the
 491  * 'wanted' range.
 492  * Notes:
 493  *   Dead zone is in % multiplied by a 100 (range 0..10000)
 494  */
 495 LONG joystick_map_axis(ObjProps *props, int val)
 496 {
 497     LONG ret;
 498     LONG dead_zone = MulDiv( props->lDeadZone, props->lDevMax - props->lDevMin, 10000 );
 499     LONG dev_range = props->lDevMax - props->lDevMin - dead_zone;
 500
 501     /* Center input */
 502     val -= (props->lDevMin + props->lDevMax) / 2;
 503
 504     /* Remove dead zone */
 505     if (abs( val ) <= dead_zone / 2)
 506         val = 0;
 507     else
 508         val = val < 0 ? val + dead_zone / 2 : val - dead_zone / 2;
 509
 510     /* Scale and map the value from the device range into the required range */
 511     ret = MulDiv( val, props->lMax - props->lMin, dev_range ) +
 512           (props->lMin + props->lMax) / 2;
 513
 514     /* Clamp in case or rounding errors */
 515     if      (ret > props->lMax) ret = props->lMax;
 516     else if (ret < props->lMin) ret = props->lMin;
 517
 518     TRACE( "(%d <%d> %d) -> (%d <%d> %d): val=%d ret=%d\n",
 519            props->lDevMin, dead_zone, props->lDevMax,
 520            props->lMin, props->lDeadZone, props->lMax,
 521            val, ret );
 522
 523     return ret;
 524 }
 525
 526 /*
 527  * Maps POV x & y event values to a DX "clock" position:
 528  *         0
 529  *   31500    4500
 530  * 27000  -1    9000
 531  *   22500   13500
 532  *       18000
 533  */
 534 DWORD joystick_map_pov(const POINTL *p)
 535 {
 536     if (p->x > 0)
 537         return p->y < 0 ?  4500 : !p->y ?  9000 : 13500;
 538     else if (p->x < 0)
 539         return p->y < 0 ? 31500 : !p->y ? 27000 : 22500;
 540     else
 541         return p->y < 0 ?     0 : !p->y ?    -1 : 18000;
 542 }
 543
 544 /*
 545  * Setup the dinput options.
 546  */
 547
 548 HRESULT setup_dinput_options(JoystickGenericImpl *This, const int *default_axis_map)
 549 {
 550     char buffer[MAX_PATH+16];
 551     HKEY hkey, appkey;
 552     int tokens = 0;
 553     int axis = 0;
 554     int pov = 0;
 555
 556     get_app_key(&hkey, &appkey);
 557
 558     /* get options */
 559
 560     if (!get_config_key(hkey, appkey, "DefaultDeadZone", buffer, sizeof(buffer)))
 561     {
 562         This->deadzone = atoi(buffer);
 563         TRACE("setting default deadzone to: \"%s\" %d\n", buffer, This->deadzone);
 564     }
 565
 566     This->axis_map = HeapAlloc(GetProcessHeap(), 0, This->device_axis_count * sizeof(int));
 567     if (!This->axis_map) return DIERR_OUTOFMEMORY;
 568
 569     if (!get_config_key(hkey, appkey, This->name, buffer, sizeof(buffer)))
 570     {
 571         static const char *axis_names[] = {"X", "Y", "Z", "Rx", "Ry", "Rz",
 572                                            "Slider1", "Slider2",
 573                                            "POV1", "POV2", "POV3", "POV4"};
 574         const char *delim = ",";
 575         char * ptr;
 576         TRACE("\"%s\" = \"%s\"\n", This->name, buffer);
 577
 578         if ((ptr = strtok(buffer, delim)) != NULL)
 579         {
 580             do
 581             {
 582                 int i;
 583
 584                 for (i = 0; i < sizeof(axis_names) / sizeof(axis_names[0]); i++)
 585                 {
 586                     if (!strcmp(ptr, axis_names[i]))
 587                     {
 588                         if (!strncmp(ptr, "POV", 3))
 589                         {
 590                             if (pov >= 4)
 591                             {
 592                                 WARN("Only 4 POVs supported - ignoring extra\n");
 593                                 i = -1;
 594                             }
 595                             else
 596                             {
 597                                 /* Pov takes two axes */
 598                                 This->axis_map[tokens++] = i;
 599                                 pov++;
 600                             }
 601                         }
 602                         else
 603                         {
 604                             if (axis >= 8)
 605                             {
 606                                 FIXME("Only 8 Axes supported - ignoring extra\n");
 607                                 i = -1;
 608                             }
 609                             else
 610                                 axis++;
 611                         }
 612                         break;
 613                     }
 614                 }
 615
 616                 if (i == sizeof(axis_names) / sizeof(axis_names[0]))
 617                 {
 618                     ERR("invalid joystick axis type: \"%s\"\n", ptr);
 619                     i = -1;
 620                 }
 621
 622                 This->axis_map[tokens] = i;
 623                 tokens++;
 624             } while ((ptr = strtok(NULL, delim)) != NULL);
 625
 626             if (tokens != This->device_axis_count)
 627             {
 628                 ERR("not all joystick axes mapped: %d axes(%d,%d), %d arguments\n",
 629                     This->device_axis_count, axis, pov, tokens);
 630                 while (tokens < This->device_axis_count)
 631                 {
 632                     This->axis_map[tokens] = -1;
 633                     tokens++;
 634                 }
 635             }
 636         }
 637     }
 638     else
 639     {
 640         int i;
 641
 642         if (default_axis_map)
 643         {
 644             /* Use default mapping from the driver */
 645             for (i = 0; i < This->device_axis_count; i++)
 646             {
 647                 This->axis_map[i] = default_axis_map[i];
 648                 tokens = default_axis_map[i];
 649                 if (tokens < 0)
 650                     continue;
 651                 if (tokens < 8)
 652                     axis++;
 653                 else if (tokens < 15)
 654                 {
 655                     i++;
 656                     pov++;
 657                     This->axis_map[i] = default_axis_map[i];
 658                 }
 659             }
 660         }
 661         else
 662         {
 663             /* No config - set default mapping. */
 664             for (i = 0; i < This->device_axis_count; i++)
 665             {
 666                 if (i < 8)
 667                     This->axis_map[i] = axis++;
 668                 else if (i < 15)
 669                 {
 670                     This->axis_map[i++] = 8 + pov;
 671                     This->axis_map[i  ] = 8 + pov++;
 672                 }
 673                 else
 674                     This->axis_map[i] = -1;
 675             }
 676         }
 677     }
 678     This->devcaps.dwAxes = axis;
 679     This->devcaps.dwPOVs = pov;
 680
 681     if (appkey) RegCloseKey(appkey);
 682     if (hkey)   RegCloseKey(hkey);
 683
 684     return DI_OK;
 685 }