dlls/dinput/effect_linuxinput.c

   1 /*              DirectInput Linux Event Device Effect
   2  *
   3  * Copyright 2005 Daniel Remenak
   4  *
   5  * Thanks to Google's Summer of Code Program (2005)
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "config.h"
  23
  24 #ifdef HAVE_STRUCT_FF_EFFECT_DIRECTION
  25
  26 #include <stdarg.h>
  27 #include <string.h>
  28 #ifdef HAVE_LINUX_INPUT_H
  29 #  include <linux/input.h>
  30 #  undef SW_MAX
  31 #endif
  32 #include <errno.h>
  33 #ifdef HAVE_UNISTD_H
  34 #  include <unistd.h>
  35 #endif
  36 #include <math.h>
  37 #include "wine/debug.h"
  38 #include "wine/unicode.h"
  39 #include "windef.h"
  40 #include "winbase.h"
  41 #include "winerror.h"
  42 #include "dinput.h"
  43
  44 #include "device_private.h"
  45
  46 WINE_DEFAULT_DEBUG_CHANNEL(dinput);
  47
  48 static const IDirectInputEffectVtbl LinuxInputEffectVtbl;
  49 typedef struct LinuxInputEffectImpl LinuxInputEffectImpl;
  50 struct LinuxInputEffectImpl
  51 {
  52     const void *lpVtbl;
  53     LONG        ref;
  54     GUID        guid;
  55
  56     struct ff_effect    effect; /* Effect data */
  57     int*                fd;     /* Parent device */
  58     struct list        *entry;  /* Entry into the parent's list of effects */
  59 };
  60
  61
  62 /******************************************************************************
  63  *      DirectInputEffect Functional Helper
  64  */
  65
  66 static DWORD _typeFromGUID(REFGUID guid)
  67 {
  68     if (IsEqualGUID(guid, &GUID_ConstantForce)) {
  69         return DIEFT_CONSTANTFORCE;
  70     } else if (IsEqualGUID(guid, &GUID_Square)
  71             || IsEqualGUID(guid, &GUID_Sine)
  72             || IsEqualGUID(guid, &GUID_Triangle)
  73             || IsEqualGUID(guid, &GUID_SawtoothUp)
  74             || IsEqualGUID(guid, &GUID_SawtoothDown)) {
  75         return DIEFT_PERIODIC;
  76     } else if (IsEqualGUID(guid, &GUID_RampForce)) {
  77         return DIEFT_RAMPFORCE;
  78     } else if (IsEqualGUID(guid, &GUID_Spring)
  79             || IsEqualGUID(guid, &GUID_Damper)
  80             || IsEqualGUID(guid, &GUID_Inertia)
  81             || IsEqualGUID(guid, &GUID_Friction)) {
  82         return DIEFT_CONDITION;
  83     } else if (IsEqualGUID(guid, &GUID_CustomForce)) {
  84         return DIEFT_CUSTOMFORCE;
  85     } else {
  86         WARN("GUID (%s) is not a known force type\n", _dump_dinput_GUID(guid));
  87         return 0;
  88     }
  89 }
  90
  91
  92 /******************************************************************************
  93  *      DirectInputEffect debug helpers
  94  */
  95
  96 static void _dump_DIEFFECT_flags(DWORD dwFlags)
  97 {
  98     if (TRACE_ON(dinput)) {
  99         unsigned int   i;
 100         static const struct {
 101             DWORD       mask;
 102             const char  *name;
 103         } flags[] = {
 104 #define FE(x) { x, #x}
 105             FE(DIEFF_CARTESIAN),
 106             FE(DIEFF_OBJECTIDS),
 107             FE(DIEFF_OBJECTOFFSETS),
 108             FE(DIEFF_POLAR),
 109             FE(DIEFF_SPHERICAL)
 110 #undef FE
 111         };
 112         for (i = 0; i < (sizeof(flags) / sizeof(flags[0])); i++)
 113             if (flags[i].mask & dwFlags)
 114                 TRACE("%s ", flags[i].name);
 115         TRACE("\n");
 116     }
 117 }
 118
 119 static void _dump_DIENVELOPE(LPCDIENVELOPE env)
 120 {
 121     if (env->dwSize != sizeof(DIENVELOPE)) {
 122         WARN("Non-standard DIENVELOPE structure size (%d instead of %d).\n",
 123              env->dwSize, sizeof(DIENVELOPE));
 124     }
 125     TRACE("Envelope has attack (level: %d time: %d), fade (level: %d time: %d)\n",
 126           env->dwAttackLevel, env->dwAttackTime, env->dwFadeLevel, env->dwFadeTime);
 127 }
 128
 129 static void _dump_DICONSTANTFORCE(LPCDICONSTANTFORCE frc)
 130 {
 131     TRACE("Constant force has magnitude %d\n", frc->lMagnitude);
 132 }
 133
 134 static void _dump_DIPERIODIC(LPCDIPERIODIC frc)
 135 {
 136     TRACE("Periodic force has magnitude %d, offset %d, phase %d, period %d\n",
 137           frc->dwMagnitude, frc->lOffset, frc->dwPhase, frc->dwPeriod);
 138 }
 139
 140 static void _dump_DIRAMPFORCE(LPCDIRAMPFORCE frc)
 141 {
 142     TRACE("Ramp force has start %d, end %d\n",
 143           frc->lStart, frc->lEnd);
 144 }
 145
 146 static void _dump_DICONDITION(LPCDICONDITION frc)
 147 {
 148     TRACE("Condition has offset %d, pos/neg coefficients %d and %d, pos/neg saturations %d and %d, deadband %d\n",
 149           frc->lOffset, frc->lPositiveCoefficient, frc->lNegativeCoefficient,
 150           frc->dwPositiveSaturation, frc->dwNegativeSaturation, frc->lDeadBand);
 151 }
 152
 153 static void _dump_DICUSTOMFORCE(LPCDICUSTOMFORCE frc)
 154 {
 155     unsigned int i;
 156     TRACE("Custom force uses %d channels, sample period %d.  Has %d samples at %p.\n",
 157           frc->cChannels, frc->dwSamplePeriod, frc->cSamples, frc->rglForceData);
 158     if (frc->cSamples % frc->cChannels != 0)
 159         WARN("Custom force has a non-integral samples-per-channel count!\n");
 160     if (TRACE_ON(dinput)) {
 161         TRACE("Custom force data (time aligned, axes in order):\n");
 162         for (i = 1; i <= frc->cSamples; ++i) {
 163             TRACE("%d ", frc->rglForceData[i]);
 164             if (i % frc->cChannels == 0)
 165                 TRACE("\n");
 166         }
 167     }
 168 }
 169
 170 static void _dump_DIEFFECT(LPCDIEFFECT eff, REFGUID guid)
 171 {
 172     unsigned int i;
 173     DWORD type = _typeFromGUID(guid);
 174
 175     TRACE("Dumping DIEFFECT structure:\n");
 176     TRACE("  - dwSize: %d\n", eff->dwSize);
 177     if ((eff->dwSize != sizeof(DIEFFECT)) && (eff->dwSize != sizeof(DIEFFECT_DX5))) {
 178         WARN("Non-standard DIEFFECT structure size (%d instead of %d or %d).\n",
 179              eff->dwSize, sizeof(DIEFFECT), sizeof(DIEFFECT_DX5));
 180     }
 181     TRACE("  - dwFlags: %d\n", eff->dwFlags);
 182     TRACE("    ");
 183     _dump_DIEFFECT_flags(eff->dwFlags);
 184     TRACE("  - dwDuration: %d\n", eff->dwDuration);
 185     TRACE("  - dwGain: %d\n", eff->dwGain);
 186     if (eff->dwGain > 10000)
 187         WARN("dwGain is out of range (>10,000)\n");
 188     TRACE("  - dwTriggerButton: %d\n", eff->dwTriggerButton);
 189     TRACE("  - dwTriggerRepeatInterval: %d\n", eff->dwTriggerRepeatInterval);
 190     TRACE("  - cAxes: %d\n", eff->cAxes);
 191     TRACE("  - rgdwAxes: %p\n", eff->rgdwAxes);
 192     if (TRACE_ON(dinput) && eff->rgdwAxes) {
 193         TRACE("    ");
 194         for (i = 0; i < eff->cAxes; ++i)
 195             TRACE("%d ", eff->rgdwAxes[i]);
 196         TRACE("\n");
 197     }
 198     TRACE("  - rglDirection: %p\n", eff->rglDirection);
 199     TRACE("  - lpEnvelope: %p\n", eff->lpEnvelope);
 200     TRACE("  - cbTypeSpecificParams: %d\n", eff->cbTypeSpecificParams);
 201     TRACE("  - lpvTypeSpecificParams: %p\n", eff->lpvTypeSpecificParams);
 202     if (eff->dwSize > sizeof(DIEFFECT_DX5))
 203         TRACE("  - dwStartDelay: %d\n", eff->dwStartDelay);
 204     if (eff->lpEnvelope != NULL)
 205         _dump_DIENVELOPE(eff->lpEnvelope);
 206     if (type == DIEFT_CONSTANTFORCE) {
 207         if (eff->cbTypeSpecificParams != sizeof(DICONSTANTFORCE)) {
 208             WARN("Effect claims to be a constant force but the type-specific params are the wrong size!\n");
 209         } else {
 210             _dump_DICONSTANTFORCE(eff->lpvTypeSpecificParams);
 211         }
 212     } else if (type == DIEFT_PERIODIC) {
 213         if (eff->cbTypeSpecificParams != sizeof(DIPERIODIC)) {
 214             WARN("Effect claims to be a periodic force but the type-specific params are the wrong size!\n");
 215         } else {
 216             _dump_DIPERIODIC(eff->lpvTypeSpecificParams);
 217         }
 218     } else if (type == DIEFT_RAMPFORCE) {
 219         if (eff->cbTypeSpecificParams != sizeof(DIRAMPFORCE)) {
 220             WARN("Effect claims to be a ramp force but the type-specific params are the wrong size!\n");
 221         } else {
 222             _dump_DIRAMPFORCE(eff->lpvTypeSpecificParams);
 223         }
 224     } else if (type == DIEFT_CONDITION) {
 225         if (eff->cbTypeSpecificParams != sizeof(DICONDITION)) {
 226             WARN("Effect claims to be a condition but the type-specific params are the wrong size!\n");
 227         } else {
 228             _dump_DICONDITION(eff->lpvTypeSpecificParams);
 229         }
 230     } else if (type == DIEFT_CUSTOMFORCE) {
 231         if (eff->cbTypeSpecificParams != sizeof(DICUSTOMFORCE)) {
 232             WARN("Effect claims to be a custom force but the type-specific params are the wrong size!\n");
 233         } else {
 234             _dump_DICUSTOMFORCE(eff->lpvTypeSpecificParams);
 235         }
 236     }
 237 }
 238
 239
 240 /******************************************************************************
 241  *      LinuxInputEffectImpl
 242  */
 243
 244 static ULONG WINAPI LinuxInputEffectImpl_AddRef(
 245         LPDIRECTINPUTEFFECT iface)
 246 {
 247     LinuxInputEffectImpl *This = (LinuxInputEffectImpl *)iface;
 248     return InterlockedIncrement(&(This->ref));
 249 }
 250
 251 static HRESULT WINAPI LinuxInputEffectImpl_Download(
 252         LPDIRECTINPUTEFFECT iface)
 253 {
 254     LinuxInputEffectImpl *This = (LinuxInputEffectImpl *)iface;
 255
 256     TRACE("(this=%p)\n", This);
 257
 258     if (ioctl(*(This->fd), EVIOCSFF, &This->effect) == -1) {
 259         if (errno == ENOMEM) {
 260             return DIERR_DEVICEFULL;
 261         } else {
 262             FIXME("Could not upload effect. Assuming a disconnected device %d \"%s\".\n", *This->fd, strerror(errno));
 263             return DIERR_INPUTLOST;
 264         }
 265     }
 266
 267     return DI_OK;
 268 }
 269
 270 static HRESULT WINAPI LinuxInputEffectImpl_Escape(
 271         LPDIRECTINPUTEFFECT iface,
 272         LPDIEFFESCAPE pesc)
 273 {
 274     WARN("(this=%p,%p): invalid: no hardware-specific escape codes in this"
 275          " driver!\n", iface, pesc);
 276
 277     return DI_OK;
 278 }
 279
 280 static HRESULT WINAPI LinuxInputEffectImpl_GetEffectGuid(
 281         LPDIRECTINPUTEFFECT iface,
 282         LPGUID pguid)
 283 {
 284     LinuxInputEffectImpl *This = (LinuxInputEffectImpl*)iface;
 285
 286     TRACE("(this=%p,%p)\n", This, pguid);
 287
 288     pguid = &This->guid;
 289
 290     return DI_OK;
 291 }
 292
 293 static HRESULT WINAPI LinuxInputEffectImpl_GetEffectStatus(
 294         LPDIRECTINPUTEFFECT iface,
 295         LPDWORD pdwFlags)
 296 {
 297     TRACE("(this=%p,%p)\n", iface, pdwFlags);
 298
 299     /* linux sends the effect status through an event.
 300      * that event is trapped by our parent joystick driver
 301      * and there is no clean way to pass it back to us. */
 302     FIXME("Not enough information to provide a status.\n");
 303
 304     (*pdwFlags) = 0;
 305
 306     return DI_OK;
 307 }
 308
 309 static HRESULT WINAPI LinuxInputEffectImpl_GetParameters(
 310         LPDIRECTINPUTEFFECT iface,
 311         LPDIEFFECT peff,
 312         DWORD dwFlags)
 313 {
 314     HRESULT diErr = DI_OK;
 315     LinuxInputEffectImpl *This = (LinuxInputEffectImpl *)iface;
 316     TRACE("(this=%p,%p,%d)\n", This, peff, dwFlags);
 317
 318     /* Major conversion factors are:
 319      * times: millisecond (linux) -> microsecond (windows) (x * 1000)
 320      * forces: scale 0x7FFF (linux) -> scale 10000 (windows) approx ((x / 33) * 10)
 321      * angles: scale 0x7FFF (linux) -> scale 35999 (windows) approx ((x / 33) * 36)
 322      * angle bases: 0 -> -y (down) (linux) -> 0 -> +x (right) (windows)
 323      */
 324
 325     if (dwFlags & DIEP_AXES) {
 326         if (peff->cAxes < 2 /* linuxinput effects always use 2 axes, x and y */)
 327             diErr = DIERR_MOREDATA;
 328         peff->cAxes = 2;
 329         if (diErr)
 330             return diErr;
 331         else {
 332             peff->rgdwAxes[0] = DIJOFS_X;
 333             peff->rgdwAxes[1] = DIJOFS_Y;
 334         }
 335     }
 336
 337     if (dwFlags & DIEP_DIRECTION) {
 338         if (peff->cAxes < 2)
 339             diErr = DIERR_MOREDATA;
 340         peff->cAxes = 2;
 341         if (diErr)
 342             return diErr;
 343         else {
 344             if (peff->dwFlags & DIEFF_CARTESIAN) {
 345                 peff->rglDirection[0] = (long)(sin(M_PI * 3 * This->effect.direction / 0x7FFF) * 1000);
 346                 peff->rglDirection[1] = (long)(cos(M_PI * 3 * This->effect.direction / 0x7FFF) * 1000);
 347             } else {
 348                 /* Polar and spherical coordinates are the same for two or less
 349                  * axes.
 350                  * Note that we also use this case if NO flags are marked.
 351                  * According to MSDN, we should return the direction in the
 352                  * format that it was specified in, if no flags are marked.
 353                  */
 354                 peff->rglDirection[0] = (This->effect.direction / 33) * 36 + 9000;
 355                 if (peff->rglDirection[0] > 35999)
 356                     peff->rglDirection[0] -= 35999;
 357             }
 358         }
 359     }
 360
 361     if (dwFlags & DIEP_DURATION) {
 362         peff->dwDuration = (DWORD)This->effect.replay.length * 1000;
 363     }
 364
 365     if (dwFlags & DIEP_ENVELOPE) {
 366         struct ff_envelope* env;
 367         if (This->effect.type == FF_CONSTANT) env = &This->effect.u.constant.envelope;
 368         else if (This->effect.type == FF_PERIODIC) env = &This->effect.u.periodic.envelope;
 369         else if (This->effect.type == FF_RAMP) env = &This->effect.u.ramp.envelope;
 370         else env = NULL;
 371         if (env == NULL) {
 372             peff->lpEnvelope = NULL;
 373         } else if (peff->lpEnvelope == NULL) {
 374             return DIERR_INVALIDPARAM;
 375         } else {
 376             peff->lpEnvelope->dwAttackLevel = (env->attack_level / 33) * 10;
 377             peff->lpEnvelope->dwAttackTime = env->attack_length * 1000;
 378             peff->lpEnvelope->dwFadeLevel = (env->fade_level / 33) * 10;
 379             peff->lpEnvelope->dwFadeTime = env->fade_length * 1000;
 380         }
 381     }
 382
 383     if (dwFlags & DIEP_GAIN) {
 384         /* the linux input ff driver apparently has no support
 385          * for setting the device's gain. */
 386         peff->dwGain = DI_FFNOMINALMAX;
 387     }
 388
 389     if (dwFlags & DIEP_SAMPLEPERIOD) {
 390         /* the linux input ff driver has no support for setting
 391          * the playback sample period.  0 means default. */
 392         peff->dwSamplePeriod = 0;
 393     }
 394
 395     if (dwFlags & DIEP_STARTDELAY) {
 396         peff->dwStartDelay = This->effect.replay.delay * 1000;
 397     }
 398
 399     if (dwFlags & DIEP_TRIGGERBUTTON) {
 400         FIXME("LinuxInput button mapping needs redoing; for now, assuming we're using an actual joystick.\n");
 401         peff->dwTriggerButton = DIJOFS_BUTTON(This->effect.trigger.button - BTN_JOYSTICK);
 402     }
 403
 404     if (dwFlags & DIEP_TRIGGERREPEATINTERVAL) {
 405         peff->dwTriggerRepeatInterval = This->effect.trigger.interval * 1000;
 406     }
 407
 408     if (dwFlags & DIEP_TYPESPECIFICPARAMS) {
 409         int expectedsize = 0;
 410         if (This->effect.type == FF_PERIODIC) {
 411             expectedsize = sizeof(DIPERIODIC);
 412         } else if (This->effect.type == FF_CONSTANT) {
 413             expectedsize = sizeof(DICONSTANTFORCE);
 414         } else if (This->effect.type == FF_SPRING
 415                 || This->effect.type == FF_FRICTION
 416                 || This->effect.type == FF_INERTIA
 417                 || This->effect.type == FF_DAMPER) {
 418             expectedsize = sizeof(DICONDITION) * 2;
 419         } else if (This->effect.type == FF_RAMP) {
 420             expectedsize = sizeof(DIRAMPFORCE);
 421         }
 422         if (expectedsize > peff->cbTypeSpecificParams)
 423             diErr = DIERR_MOREDATA;
 424         peff->cbTypeSpecificParams = expectedsize;
 425         if (diErr)
 426             return diErr;
 427         else {
 428             if (This->effect.type == FF_PERIODIC) {
 429                 LPDIPERIODIC tsp = (LPDIPERIODIC)(peff->lpvTypeSpecificParams);
 430                 tsp->dwMagnitude = (This->effect.u.periodic.magnitude / 33) * 10;
 431                 tsp->lOffset = (This->effect.u.periodic.offset / 33) * 10;
 432                 tsp->dwPhase = (This->effect.u.periodic.phase / 33) * 36;
 433                 tsp->dwPeriod = (This->effect.u.periodic.period * 1000);
 434             } else if (This->effect.type == FF_CONSTANT) {
 435                 LPDICONSTANTFORCE tsp = (LPDICONSTANTFORCE)(peff->lpvTypeSpecificParams);
 436                 tsp->lMagnitude = (This->effect.u.constant.level / 33) * 10;
 437             } else if (This->effect.type == FF_SPRING
 438                     || This->effect.type == FF_FRICTION
 439                     || This->effect.type == FF_INERTIA
 440                     || This->effect.type == FF_DAMPER) {
 441                 LPDICONDITION tsp = (LPDICONDITION)(peff->lpvTypeSpecificParams);
 442                 int i;
 443                 for (i = 0; i < 2; ++i) {
 444                     tsp[i].lOffset = (This->effect.u.condition[i].center / 33) * 10;
 445                     tsp[i].lPositiveCoefficient = (This->effect.u.condition[i].right_coeff / 33) * 10;
 446                     tsp[i].lNegativeCoefficient = (This->effect.u.condition[i].left_coeff / 33) * 10;
 447                     tsp[i].dwPositiveSaturation = (This->effect.u.condition[i].right_saturation / 33) * 10;
 448                     tsp[i].dwNegativeSaturation = (This->effect.u.condition[i].left_saturation / 33) * 10;
 449                     tsp[i].lDeadBand = (This->effect.u.condition[i].deadband / 33) * 10;
 450                 }
 451             } else if (This->effect.type == FF_RAMP) {
 452                 LPDIRAMPFORCE tsp = (LPDIRAMPFORCE)(peff->lpvTypeSpecificParams);
 453                 tsp->lStart = (This->effect.u.ramp.start_level / 33) * 10;
 454                 tsp->lEnd = (This->effect.u.ramp.end_level / 33) * 10;
 455             }
 456         }
 457     }
 458
 459     return diErr;
 460 }
 461
 462 static HRESULT WINAPI LinuxInputEffectImpl_Initialize(
 463         LPDIRECTINPUTEFFECT iface,
 464         HINSTANCE hinst,
 465         DWORD dwVersion,
 466         REFGUID rguid)
 467 {
 468     FIXME("(this=%p,%p,%d,%s): stub!\n",
 469          iface, hinst, dwVersion, debugstr_guid(rguid));
 470
 471     return DI_OK;
 472 }
 473
 474 static HRESULT WINAPI LinuxInputEffectImpl_QueryInterface(
 475         LPDIRECTINPUTEFFECT iface,
 476         REFIID riid,
 477         void **ppvObject)
 478 {
 479     LinuxInputEffectImpl* This = (LinuxInputEffectImpl*)iface;
 480
 481     TRACE("(this=%p,%s,%p)\n", This, debugstr_guid(riid), ppvObject);
 482
 483     if (IsEqualGUID(&IID_IUnknown, riid) ||
 484         IsEqualGUID(&IID_IDirectInputEffect, riid)) {
 485             LinuxInputEffectImpl_AddRef(iface);
 486             *ppvObject = This;
 487             return 0;
 488     }
 489
 490     TRACE("Unsupported interface!\n");
 491     return E_FAIL;
 492 }
 493
 494 static HRESULT WINAPI LinuxInputEffectImpl_Start(
 495         LPDIRECTINPUTEFFECT iface,
 496         DWORD dwIterations,
 497         DWORD dwFlags)
 498 {
 499     struct input_event event;
 500     LinuxInputEffectImpl* This = (LinuxInputEffectImpl*)iface;
 501
 502     TRACE("(this=%p,%d,%d)\n", This, dwIterations, dwFlags);
 503
 504     if (!(dwFlags & DIES_NODOWNLOAD)) {
 505         /* Download the effect if necessary */
 506         if (This->effect.id == -1) {
 507             HRESULT res = LinuxInputEffectImpl_Download(iface);
 508             if (res != DI_OK)
 509                 return res;
 510         }
 511     }
 512
 513     if (dwFlags & DIES_SOLO) {
 514         FIXME("Solo mode requested: should be stopping all effects here!\n");
 515     }
 516
 517     event.type = EV_FF;
 518     event.code = This->effect.id;
 519     event.value = dwIterations;
 520     if (write(*(This->fd), &event, sizeof(event)) == -1) {
 521         FIXME("Unable to write event.  Assuming device disconnected.\n");
 522         return DIERR_INPUTLOST;
 523     }
 524
 525     return DI_OK;
 526 }
 527
 528 static HRESULT WINAPI LinuxInputEffectImpl_SetParameters(
 529         LPDIRECTINPUTEFFECT iface,
 530         LPCDIEFFECT peff,
 531         DWORD dwFlags)
 532 {
 533     LinuxInputEffectImpl* This = (LinuxInputEffectImpl*)iface;
 534     DWORD type = _typeFromGUID(&This->guid);
 535     HRESULT retval = DI_OK;
 536
 537     TRACE("(this=%p,%p,%d)\n", This, peff, dwFlags);
 538
 539     _dump_DIEFFECT(peff, &This->guid);
 540
 541     if ((dwFlags & ~DIEP_NORESTART & ~DIEP_NODOWNLOAD & ~DIEP_START) == 0) {
 542         /* set everything */
 543         dwFlags = DIEP_AXES | DIEP_DIRECTION | DIEP_DURATION | DIEP_ENVELOPE |
 544             DIEP_GAIN | DIEP_SAMPLEPERIOD | DIEP_STARTDELAY | DIEP_TRIGGERBUTTON |
 545             DIEP_TRIGGERREPEATINTERVAL | DIEP_TYPESPECIFICPARAMS;
 546     }
 547
 548     if (dwFlags & DIEP_AXES) {
 549         /* the linux input effect system only supports one or two axes */
 550         if (peff->cAxes > 2)
 551             return DIERR_INVALIDPARAM;
 552         else if (peff->cAxes < 1)
 553             return DIERR_INCOMPLETEEFFECT;
 554     }
 555
 556     /* some of this may look funky, but it's 'cause the linux driver and directx have
 557      * different opinions about which way direction "0" is.  directx has 0 along the x
 558      * axis (left), linux has it along the y axis (down). */
 559     if (dwFlags & DIEP_DIRECTION) {
 560         if (peff->cAxes == 1) {
 561             if (peff->dwFlags & DIEFF_CARTESIAN) {
 562                 if (dwFlags & DIEP_AXES) {
 563                     if (peff->rgdwAxes[0] == DIJOFS_X && peff->rglDirection[0] >= 0)
 564                         This->effect.direction = 0x4000;
 565                     else if (peff->rgdwAxes[0] == DIJOFS_X && peff->rglDirection[0] < 0)
 566                         This->effect.direction = 0xC000;
 567                     else if (peff->rgdwAxes[0] == DIJOFS_Y && peff->rglDirection[0] >= 0)
 568                         This->effect.direction = 0;
 569                     else if (peff->rgdwAxes[0] == DIJOFS_Y && peff->rglDirection[0] < 0)
 570                         This->effect.direction = 0x8000;
 571                 }
 572             } else {
 573                 /* one-axis effects must use cartesian coords */
 574                 return DIERR_INVALIDPARAM;
 575             }
 576         } else { /* two axes */
 577             if (peff->dwFlags & DIEFF_CARTESIAN) {
 578                 /* avoid divide-by-zero */
 579                 if (peff->rglDirection[1] == 0) {
 580                     if (peff->rglDirection[0] >= 0)
 581                         This->effect.direction = 0x4000;
 582                     else if (peff->rglDirection[0] < 0)
 583                         This->effect.direction = 0xC000;
 584                 } else {
 585                     This->effect.direction = (int)(atan(peff->rglDirection[0] / peff->rglDirection[1]) * 0x7FFF / (3 * M_PI));
 586                 }
 587             } else {
 588                 /* Polar and spherical are the same for 2 axes */
 589                 /* Precision is important here, so we do double math with exact constants */
 590                 This->effect.direction = (int)(((double)peff->rglDirection[0] - 90) / 35999) * 0x7FFF;
 591             }
 592         }
 593     }
 594
 595     if (dwFlags & DIEP_DURATION)
 596         This->effect.replay.length = peff->dwDuration / 1000;
 597
 598     if (dwFlags & DIEP_ENVELOPE) {
 599         struct ff_envelope* env;
 600         if (This->effect.type == FF_CONSTANT) env = &This->effect.u.constant.envelope;
 601         else if (This->effect.type == FF_PERIODIC) env = &This->effect.u.periodic.envelope;
 602         else if (This->effect.type == FF_RAMP) env = &This->effect.u.ramp.envelope;
 603         else env = NULL;
 604
 605         if (peff->lpEnvelope == NULL) {
 606             /* if this type had an envelope, reset it
 607              * note that length can never be zero, so we set it to something minuscule */
 608             if (env) {
 609                 env->attack_length = 0x10;
 610                 env->attack_level = 0x7FFF;
 611                 env->fade_length = 0x10;
 612                 env->fade_level = 0x7FFF;
 613             }
 614         } else {
 615             /* did we get passed an envelope for a type that doesn't even have one? */
 616             if (!env) return DIERR_INVALIDPARAM;
 617             /* copy the envelope */
 618             env->attack_length = peff->lpEnvelope->dwAttackTime / 1000;
 619             env->attack_level = (peff->lpEnvelope->dwAttackLevel / 10) * 32;
 620             env->fade_length = peff->lpEnvelope->dwFadeTime / 1000;
 621             env->fade_level = (peff->lpEnvelope->dwFadeLevel / 10) * 32;
 622         }
 623     }
 624
 625     /* Gain and Sample Period settings are not supported by the linux
 626      * event system */
 627     if (dwFlags & DIEP_GAIN)
 628         TRACE("Gain requested but no gain functionality present.\n");
 629
 630     if (dwFlags & DIEP_SAMPLEPERIOD)
 631         TRACE("Sample period requested but no sample period functionality present.\n");
 632
 633     if (dwFlags & DIEP_STARTDELAY)
 634         This->effect.replay.delay = peff->dwStartDelay / 1000;
 635
 636     if (dwFlags & DIEP_TRIGGERBUTTON) {
 637         if (peff->dwTriggerButton != -1) {
 638             FIXME("Linuxinput button mapping needs redoing, assuming we're using a joystick.\n");
 639             FIXME("Trigger button translation not yet implemented!\n");
 640         }
 641         This->effect.trigger.button = 0;
 642     }
 643
 644     if (dwFlags & DIEP_TRIGGERREPEATINTERVAL)
 645         This->effect.trigger.interval = peff->dwTriggerRepeatInterval / 1000;
 646
 647     if (dwFlags & DIEP_TYPESPECIFICPARAMS) {
 648         if (!(peff->lpvTypeSpecificParams))
 649             return DIERR_INCOMPLETEEFFECT;
 650         if (type == DIEFT_PERIODIC) {
 651             LPCDIPERIODIC tsp;
 652             if (peff->cbTypeSpecificParams != sizeof(DIPERIODIC))
 653                 return DIERR_INVALIDPARAM;
 654             tsp = (LPCDIPERIODIC)(peff->lpvTypeSpecificParams);
 655             This->effect.u.periodic.magnitude = (tsp->dwMagnitude / 10) * 32;
 656             This->effect.u.periodic.offset = (tsp->lOffset / 10) * 32;
 657             This->effect.u.periodic.phase = (tsp->dwPhase / 9) * 8; /* == (/ 36 * 32) */
 658             This->effect.u.periodic.period = tsp->dwPeriod / 1000;
 659         } else if (type == DIEFT_CONSTANTFORCE) {
 660             LPCDICONSTANTFORCE tsp;
 661             if (peff->cbTypeSpecificParams != sizeof(DICONSTANTFORCE))
 662                 return DIERR_INVALIDPARAM;
 663             tsp = (LPCDICONSTANTFORCE)(peff->lpvTypeSpecificParams);
 664             This->effect.u.constant.level = (tsp->lMagnitude / 10) * 32;
 665         } else if (type == DIEFT_RAMPFORCE) {
 666             LPCDIRAMPFORCE tsp;
 667             if (peff->cbTypeSpecificParams != sizeof(DIRAMPFORCE))
 668                 return DIERR_INVALIDPARAM;
 669             tsp = (LPCDIRAMPFORCE)(peff->lpvTypeSpecificParams);
 670             This->effect.u.ramp.start_level = (tsp->lStart / 10) * 32;
 671             This->effect.u.ramp.end_level = (tsp->lStart / 10) * 32;
 672         } else if (type == DIEFT_CONDITION) {
 673             LPCDICONDITION tsp = (LPCDICONDITION)(peff->lpvTypeSpecificParams);
 674             if (peff->cbTypeSpecificParams == sizeof(DICONDITION)) {
 675                 /* One condition block.  This needs to be rotated to direction,
 676                  * and expanded to separate x and y conditions. */
 677                 int i;
 678                 double factor[2];
 679                 factor[0] = asin((This->effect.direction * 3.0 * M_PI) / 0x7FFF);
 680                 factor[1] = acos((This->effect.direction * 3.0 * M_PI) / 0x7FFF);
 681                 for (i = 0; i < 2; ++i) {
 682                     This->effect.u.condition[i].center = (int)(factor[i] * (tsp->lOffset / 10) * 32);
 683                     This->effect.u.condition[i].right_coeff = (int)(factor[i] * (tsp->lPositiveCoefficient / 10) * 32);
 684                     This->effect.u.condition[i].left_coeff = (int)(factor[i] * (tsp->lNegativeCoefficient / 10) * 32);
 685                     This->effect.u.condition[i].right_saturation = (int)(factor[i] * (tsp->dwPositiveSaturation / 10) * 32);
 686                     This->effect.u.condition[i].left_saturation = (int)(factor[i] * (tsp->dwNegativeSaturation / 10) * 32);
 687                     This->effect.u.condition[i].deadband = (int)(factor[i] * (tsp->lDeadBand / 10) * 32);
 688                 }
 689             } else if (peff->cbTypeSpecificParams == 2 * sizeof(DICONDITION)) {
 690                 /* Two condition blocks.  Direct parameter copy. */
 691                 int i;
 692                 for (i = 0; i < 2; ++i) {
 693                     This->effect.u.condition[i].center = (tsp[i].lOffset / 10) * 32;
 694                     This->effect.u.condition[i].right_coeff = (tsp[i].lPositiveCoefficient / 10) * 32;
 695                     This->effect.u.condition[i].left_coeff = (tsp[i].lNegativeCoefficient / 10) * 32;
 696                     This->effect.u.condition[i].right_saturation = (tsp[i].dwPositiveSaturation / 10) * 32;
 697                     This->effect.u.condition[i].left_saturation = (tsp[i].dwNegativeSaturation / 10) * 32;
 698                     This->effect.u.condition[i].deadband = (tsp[i].lDeadBand / 10) * 32;
 699                 }
 700             } else {
 701                 return DIERR_INVALIDPARAM;
 702             }
 703         } else {
 704             FIXME("Custom force types are not supported\n");
 705             return DIERR_INVALIDPARAM;
 706         }
 707     }
 708
 709     if (!(dwFlags & DIEP_NODOWNLOAD))
 710         retval = LinuxInputEffectImpl_Download(iface);
 711     if (retval != DI_OK)
 712         return DI_DOWNLOADSKIPPED;
 713
 714     if (dwFlags & DIEP_NORESTART)
 715         TRACE("DIEP_NORESTART: not handled (we have no control of that).\n");
 716
 717     if (dwFlags & DIEP_START)
 718         retval = LinuxInputEffectImpl_Start(iface, 1, 0);
 719     if (retval != DI_OK)
 720         return retval;
 721
 722     return DI_OK;
 723 }
 724
 725 static HRESULT WINAPI LinuxInputEffectImpl_Stop(
 726         LPDIRECTINPUTEFFECT iface)
 727 {
 728     struct input_event event;
 729     LinuxInputEffectImpl *This = (LinuxInputEffectImpl *)iface;
 730
 731     TRACE("(this=%p)\n", This);
 732
 733     event.type = EV_FF;
 734     event.code = This->effect.id;
 735     event.value = 0;
 736     /* we don't care about the success or failure of this call */
 737     write(*(This->fd), &event, sizeof(event));
 738
 739     return DI_OK;
 740 }
 741
 742 static HRESULT WINAPI LinuxInputEffectImpl_Unload(
 743         LPDIRECTINPUTEFFECT iface)
 744 {
 745     LinuxInputEffectImpl *This = (LinuxInputEffectImpl *)iface;
 746     TRACE("(this=%p)\n", This);
 747
 748     /* Erase the downloaded effect */
 749     if (ioctl(*(This->fd), EVIOCRMFF, This->effect.id) == -1)
 750         return DIERR_INVALIDPARAM;
 751
 752     /* Mark the effect as deallocated */
 753     This->effect.id = -1;
 754
 755     return DI_OK;
 756 }
 757
 758 static ULONG WINAPI LinuxInputEffectImpl_Release(LPDIRECTINPUTEFFECT iface)
 759 {
 760     LinuxInputEffectImpl *This = (LinuxInputEffectImpl *)iface;
 761     ULONG ref = InterlockedDecrement(&(This->ref));
 762
 763     if (ref == 0)
 764     {
 765         LinuxInputEffectImpl_Stop(iface);
 766         LinuxInputEffectImpl_Unload(iface);
 767         list_remove(This->entry);
 768         HeapFree(GetProcessHeap(), 0, LIST_ENTRY(This->entry, effect_list_item, entry));
 769         HeapFree(GetProcessHeap(), 0, This);
 770     }
 771     return ref;
 772 }
 773
 774 /******************************************************************************
 775  *      LinuxInputEffect
 776  */
 777
 778 HRESULT linuxinput_create_effect(
 779         int* fd,
 780         REFGUID rguid,
 781         struct list *parent_list_entry,
 782         LPDIRECTINPUTEFFECT* peff)
 783 {
 784     LinuxInputEffectImpl* newEffect = HeapAlloc(GetProcessHeap(),
 785         HEAP_ZERO_MEMORY, sizeof(LinuxInputEffectImpl));
 786     DWORD type = _typeFromGUID(rguid);
 787
 788     newEffect->lpVtbl = &LinuxInputEffectVtbl;
 789     newEffect->ref = 1;
 790     newEffect->guid = *rguid;
 791     newEffect->fd = fd;
 792
 793     /* set the type.  this cannot be changed over the effect's life. */
 794     switch (type) {
 795         case DIEFT_PERIODIC:
 796             newEffect->effect.type = FF_PERIODIC;
 797             if (IsEqualGUID(rguid, &GUID_Sine)) {
 798                 newEffect->effect.u.periodic.waveform = FF_SINE;
 799             } else if (IsEqualGUID(rguid, &GUID_Triangle)) {
 800                 newEffect->effect.u.periodic.waveform = FF_TRIANGLE;
 801             } else if (IsEqualGUID(rguid, &GUID_Square)) {
 802                 newEffect->effect.u.periodic.waveform = FF_SQUARE;
 803             } else if (IsEqualGUID(rguid, &GUID_SawtoothUp)) {
 804                 newEffect->effect.u.periodic.waveform = FF_SAW_UP;
 805             } else if (IsEqualGUID(rguid, &GUID_SawtoothDown)) {
 806                 newEffect->effect.u.periodic.waveform = FF_SAW_DOWN;
 807             }
 808             break;
 809         case DIEFT_CONSTANTFORCE:
 810             newEffect->effect.type = FF_CONSTANT;
 811             break;
 812         case DIEFT_RAMPFORCE:
 813             newEffect->effect.type = FF_RAMP;
 814             break;
 815         case DIEFT_CONDITION:
 816             if (IsEqualGUID(rguid, &GUID_Spring)) {
 817                 newEffect->effect.type = FF_SPRING;
 818             } else if (IsEqualGUID(rguid, &GUID_Friction)) {
 819                 newEffect->effect.type = FF_FRICTION;
 820             } else if (IsEqualGUID(rguid, &GUID_Inertia)) {
 821                 newEffect->effect.type = FF_INERTIA;
 822             } else if (IsEqualGUID(rguid, &GUID_Damper)) {
 823                 newEffect->effect.type = FF_DAMPER;
 824             }
 825             break;
 826         case DIEFT_CUSTOMFORCE:
 827             FIXME("Custom forces are not supported.\n");
 828             HeapFree(GetProcessHeap(), 0, newEffect);
 829             return DIERR_INVALIDPARAM;
 830         default:
 831             FIXME("Unknown force type 0x%x.\n", type);
 832             HeapFree(GetProcessHeap(), 0, newEffect);
 833             return DIERR_INVALIDPARAM;
 834     }
 835
 836     /* mark as non-uploaded */
 837     newEffect->effect.id = -1;
 838
 839     newEffect->entry = parent_list_entry;
 840
 841     *peff = (LPDIRECTINPUTEFFECT)newEffect;
 842
 843     TRACE("Creating linux input system effect (%p) with guid %s\n",
 844           *peff, _dump_dinput_GUID(rguid));
 845
 846     return DI_OK;
 847 }
 848
 849 HRESULT linuxinput_get_info_A(
 850         int fd,
 851         REFGUID rguid,
 852         LPDIEFFECTINFOA info)
 853 {
 854     DWORD type = _typeFromGUID(rguid);
 855
 856     TRACE("(%d, %s, %p) type=%d\n", fd, _dump_dinput_GUID(rguid), info, type);
 857
 858     if (!info) return E_POINTER;
 859
 860     if (info->dwSize != sizeof(DIEFFECTINFOA)) return DIERR_INVALIDPARAM;
 861
 862     info->guid = *rguid;
 863
 864     info->dwEffType = type;
 865     /* the event device API does not support querying for all these things
 866      * therefore we assume that we have support for them
 867      * that's not as dangerous as it sounds, since drivers are allowed to
 868      * ignore parameters they claim to support anyway */
 869     info->dwEffType |= DIEFT_DEADBAND | DIEFT_FFATTACK | DIEFT_FFFADE
 870                     | DIEFT_POSNEGCOEFFICIENTS | DIEFT_POSNEGSATURATION
 871                     | DIEFT_SATURATION | DIEFT_STARTDELAY;
 872
 873     /* again, assume we have support for everything */
 874     info->dwStaticParams = DIEP_ALLPARAMS;
 875     info->dwDynamicParams = info->dwStaticParams;
 876
 877     /* yes, this is windows behavior (print the GUID_Name for name) */
 878     strcpy((char*)info->tszName, _dump_dinput_GUID(rguid));
 879
 880     return DI_OK;
 881 }
 882
 883 HRESULT linuxinput_get_info_W(
 884         int fd,
 885         REFGUID rguid,
 886         LPDIEFFECTINFOW info)
 887 {
 888     DWORD type = _typeFromGUID(rguid);
 889
 890     TRACE("(%d, %s, %p) type=%d\n", fd, _dump_dinput_GUID(rguid), info, type);
 891
 892     if (!info) return E_POINTER;
 893
 894     if (info->dwSize != sizeof(DIEFFECTINFOW)) return DIERR_INVALIDPARAM;
 895
 896     info->guid = *rguid;
 897
 898     info->dwEffType = type;
 899     /* the event device API does not support querying for all these things
 900      * therefore we assume that we have support for them
 901      * that's not as dangerous as it sounds, since drivers are allowed to
 902      * ignore parameters they claim to support anyway */
 903     info->dwEffType |= DIEFT_DEADBAND | DIEFT_FFATTACK | DIEFT_FFFADE
 904                     | DIEFT_POSNEGCOEFFICIENTS | DIEFT_POSNEGSATURATION
 905                     | DIEFT_SATURATION | DIEFT_STARTDELAY;
 906
 907     /* again, assume we have support for everything */
 908     info->dwStaticParams = DIEP_ALLPARAMS;
 909     info->dwDynamicParams = info->dwStaticParams;
 910
 911     /* yes, this is windows behavior (print the GUID_Name for name) */
 912     MultiByteToWideChar(CP_ACP, 0, _dump_dinput_GUID(rguid), -1,
 913                         (WCHAR*)info->tszName, MAX_PATH);
 914
 915     return DI_OK;
 916 }
 917
 918 static const IDirectInputEffectVtbl LinuxInputEffectVtbl = {
 919     LinuxInputEffectImpl_QueryInterface,
 920     LinuxInputEffectImpl_AddRef,
 921     LinuxInputEffectImpl_Release,
 922     LinuxInputEffectImpl_Initialize,
 923     LinuxInputEffectImpl_GetEffectGuid,
 924     LinuxInputEffectImpl_GetParameters,
 925     LinuxInputEffectImpl_SetParameters,
 926     LinuxInputEffectImpl_Start,
 927     LinuxInputEffectImpl_Stop,
 928     LinuxInputEffectImpl_GetEffectStatus,
 929     LinuxInputEffectImpl_Download,
 930     LinuxInputEffectImpl_Unload,
 931     LinuxInputEffectImpl_Escape
 932 };
 933
 934 #endif /* HAVE_STRUCT_FF_EFFECT_DIRECTION */