SDL  2.0
SDL_haptic.c
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1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
4 
5  This software is provided 'as-is', without any express or implied
6  warranty. In no event will the authors be held liable for any damages
7  arising from the use of this software.
8 
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12 
13  1. The origin of this software must not be misrepresented; you must not
14  claim that you wrote the original software. If you use this software
15  in a product, an acknowledgment in the product documentation would be
16  appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18  misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20 */
21 #include "../SDL_internal.h"
22 
23 #include "SDL_syshaptic.h"
24 #include "SDL_haptic_c.h"
25 #include "../joystick/SDL_joystick_c.h" /* For SDL_PrivateJoystickValid */
26 #include "SDL_assert.h"
27 
28 /* Global for SDL_windowshaptic.c */
29 SDL_Haptic *SDL_haptics = NULL;
30 
31 /*
32  * Initializes the Haptic devices.
33  */
34 int
36 {
37  int status;
38 
39  status = SDL_SYS_HapticInit();
40  if (status >= 0) {
41  status = 0;
42  }
43 
44  return status;
45 }
46 
47 
48 /*
49  * Checks to see if the haptic device is valid
50  */
51 static int
52 ValidHaptic(SDL_Haptic * haptic)
53 {
54  int valid;
55  SDL_Haptic *hapticlist;
56 
57  valid = 0;
58  if (haptic != NULL) {
59  hapticlist = SDL_haptics;
60  while ( hapticlist )
61  {
62  if (hapticlist == haptic) {
63  valid = 1;
64  break;
65  }
66  hapticlist = hapticlist->next;
67  }
68  }
69 
70  /* Create the error here. */
71  if (valid == 0) {
72  SDL_SetError("Haptic: Invalid haptic device identifier");
73  }
74 
75  return valid;
76 }
77 
78 
79 /*
80  * Returns the number of available devices.
81  */
82 int
84 {
85  return SDL_SYS_NumHaptics();
86 }
87 
88 
89 /*
90  * Gets the name of a Haptic device by index.
91  */
92 const char *
93 SDL_HapticName(int device_index)
94 {
95  if ((device_index < 0) || (device_index >= SDL_NumHaptics())) {
96  SDL_SetError("Haptic: There are %d haptic devices available",
97  SDL_NumHaptics());
98  return NULL;
99  }
100  return SDL_SYS_HapticName(device_index);
101 }
102 
103 
104 /*
105  * Opens a Haptic device.
106  */
107 SDL_Haptic *
108 SDL_HapticOpen(int device_index)
109 {
110  SDL_Haptic *haptic;
111  SDL_Haptic *hapticlist;
112 
113  if ((device_index < 0) || (device_index >= SDL_NumHaptics())) {
114  SDL_SetError("Haptic: There are %d haptic devices available",
115  SDL_NumHaptics());
116  return NULL;
117  }
118 
119  hapticlist = SDL_haptics;
120  /* If the haptic is already open, return it
121  * TODO: Should we create haptic instance IDs like the Joystick API?
122  */
123  while ( hapticlist )
124  {
125  if (device_index == hapticlist->index) {
126  haptic = hapticlist;
127  ++haptic->ref_count;
128  return haptic;
129  }
130  hapticlist = hapticlist->next;
131  }
132 
133  /* Create the haptic device */
134  haptic = (SDL_Haptic *) SDL_malloc((sizeof *haptic));
135  if (haptic == NULL) {
136  SDL_OutOfMemory();
137  return NULL;
138  }
139 
140  /* Initialize the haptic device */
141  SDL_memset(haptic, 0, (sizeof *haptic));
142  haptic->rumble_id = -1;
143  haptic->index = device_index;
144  if (SDL_SYS_HapticOpen(haptic) < 0) {
145  SDL_free(haptic);
146  return NULL;
147  }
148 
149  /* Add haptic to list */
150  ++haptic->ref_count;
151  /* Link the haptic in the list */
152  haptic->next = SDL_haptics;
154 
155  /* Disable autocenter and set gain to max. */
156  if (haptic->supported & SDL_HAPTIC_GAIN)
157  SDL_HapticSetGain(haptic, 100);
158  if (haptic->supported & SDL_HAPTIC_AUTOCENTER)
159  SDL_HapticSetAutocenter(haptic, 0);
160 
161  return haptic;
162 }
163 
164 
165 /*
166  * Returns 1 if the device has been opened.
167  */
168 int
169 SDL_HapticOpened(int device_index)
170 {
171  int opened;
172  SDL_Haptic *hapticlist;
173 
174  /* Make sure it's valid. */
175  if ((device_index < 0) || (device_index >= SDL_NumHaptics())) {
176  SDL_SetError("Haptic: There are %d haptic devices available",
177  SDL_NumHaptics());
178  return 0;
179  }
180 
181  opened = 0;
182  hapticlist = SDL_haptics;
183  /* TODO Should this use an instance ID? */
184  while ( hapticlist )
185  {
186  if (hapticlist->index == (Uint8) device_index) {
187  opened = 1;
188  break;
189  }
190  hapticlist = hapticlist->next;
191  }
192  return opened;
193 }
194 
195 
196 /*
197  * Returns the index to a haptic device.
198  */
199 int
200 SDL_HapticIndex(SDL_Haptic * haptic)
201 {
202  if (!ValidHaptic(haptic)) {
203  return -1;
204  }
205 
206  return haptic->index;
207 }
208 
209 
210 /*
211  * Returns SDL_TRUE if mouse is haptic, SDL_FALSE if it isn't.
212  */
213 int
215 {
216  if (SDL_SYS_HapticMouse() < 0)
217  return SDL_FALSE;
218  return SDL_TRUE;
219 }
220 
221 
222 /*
223  * Returns the haptic device if mouse is haptic or NULL elsewise.
224  */
225 SDL_Haptic *
227 {
228  int device_index;
229 
230  device_index = SDL_SYS_HapticMouse();
231 
232  if (device_index < 0) {
233  SDL_SetError("Haptic: Mouse isn't a haptic device.");
234  return NULL;
235  }
236 
237  return SDL_HapticOpen(device_index);
238 }
239 
240 
241 /*
242  * Returns SDL_TRUE if joystick has haptic features.
243  */
244 int
245 SDL_JoystickIsHaptic(SDL_Joystick * joystick)
246 {
247  int ret;
248 
249  /* Must be a valid joystick */
250  if (!SDL_PrivateJoystickValid(joystick)) {
251  return -1;
252  }
253 
254  ret = SDL_SYS_JoystickIsHaptic(joystick);
255 
256  if (ret > 0)
257  return SDL_TRUE;
258  else if (ret == 0)
259  return SDL_FALSE;
260  else
261  return -1;
262 }
263 
264 
265 /*
266  * Opens a haptic device from a joystick.
267  */
268 SDL_Haptic *
269 SDL_HapticOpenFromJoystick(SDL_Joystick * joystick)
270 {
271  SDL_Haptic *haptic;
272  SDL_Haptic *hapticlist;
273 
274  /* Make sure there is room. */
275  if (SDL_NumHaptics() <= 0) {
276  SDL_SetError("Haptic: There are %d haptic devices available",
277  SDL_NumHaptics());
278  return NULL;
279  }
280 
281  /* Must be a valid joystick */
282  if (!SDL_PrivateJoystickValid(joystick)) {
283  SDL_SetError("Haptic: Joystick isn't valid.");
284  return NULL;
285  }
286 
287  /* Joystick must be haptic */
288  if (SDL_SYS_JoystickIsHaptic(joystick) <= 0) {
289  SDL_SetError("Haptic: Joystick isn't a haptic device.");
290  return NULL;
291  }
292 
293  hapticlist = SDL_haptics;
294  /* Check to see if joystick's haptic is already open */
295  while ( hapticlist )
296  {
297  if (SDL_SYS_JoystickSameHaptic(hapticlist, joystick)) {
298  haptic = hapticlist;
299  ++haptic->ref_count;
300  return haptic;
301  }
302  hapticlist = hapticlist->next;
303  }
304 
305  /* Create the haptic device */
306  haptic = (SDL_Haptic *) SDL_malloc((sizeof *haptic));
307  if (haptic == NULL) {
308  SDL_OutOfMemory();
309  return NULL;
310  }
311 
312  /* Initialize the haptic device */
313  SDL_memset(haptic, 0, sizeof(SDL_Haptic));
314  haptic->rumble_id = -1;
315  if (SDL_SYS_HapticOpenFromJoystick(haptic, joystick) < 0) {
316  SDL_SetError("Haptic: SDL_SYS_HapticOpenFromJoystick failed.");
317  SDL_free(haptic);
318  return NULL;
319  }
320 
321  /* Add haptic to list */
322  ++haptic->ref_count;
323  /* Link the haptic in the list */
324  haptic->next = SDL_haptics;
326 
327  return haptic;
328 }
329 
330 
331 /*
332  * Closes a SDL_Haptic device.
333  */
334 void
335 SDL_HapticClose(SDL_Haptic * haptic)
336 {
337  int i;
338  SDL_Haptic *hapticlist;
339  SDL_Haptic *hapticlistprev;
340 
341  /* Must be valid */
342  if (!ValidHaptic(haptic)) {
343  return;
344  }
345 
346  /* Check if it's still in use */
347  if (--haptic->ref_count > 0) {
348  return;
349  }
350 
351  /* Close it, properly removing effects if needed */
352  for (i = 0; i < haptic->neffects; i++) {
353  if (haptic->effects[i].hweffect != NULL) {
354  SDL_HapticDestroyEffect(haptic, i);
355  }
356  }
357  SDL_SYS_HapticClose(haptic);
358 
359  /* Remove from the list */
360  hapticlist = SDL_haptics;
361  hapticlistprev = NULL;
362  while ( hapticlist )
363  {
364  if (haptic == hapticlist)
365  {
366  if ( hapticlistprev )
367  {
368  /* unlink this entry */
369  hapticlistprev->next = hapticlist->next;
370  }
371  else
372  {
373  SDL_haptics = haptic->next;
374  }
375 
376  break;
377  }
378  hapticlistprev = hapticlist;
379  hapticlist = hapticlist->next;
380  }
381 
382  /* Free */
383  SDL_free(haptic);
384 }
385 
386 /*
387  * Cleans up after the subsystem.
388  */
389 void
391 {
392  while (SDL_haptics) {
394  }
395 
397 }
398 
399 /*
400  * Returns the number of effects a haptic device has.
401  */
402 int
404 {
405  if (!ValidHaptic(haptic)) {
406  return -1;
407  }
408 
409  return haptic->neffects;
410 }
411 
412 
413 /*
414  * Returns the number of effects a haptic device can play.
415  */
416 int
418 {
419  if (!ValidHaptic(haptic)) {
420  return -1;
421  }
422 
423  return haptic->nplaying;
424 }
425 
426 
427 /*
428  * Returns supported effects by the device.
429  */
430 unsigned int
431 SDL_HapticQuery(SDL_Haptic * haptic)
432 {
433  if (!ValidHaptic(haptic)) {
434  return 0; /* same as if no effects were supported */
435  }
436 
437  return haptic->supported;
438 }
439 
440 
441 /*
442  * Returns the number of axis on the device.
443  */
444 int
446 {
447  if (!ValidHaptic(haptic)) {
448  return -1;
449  }
450 
451  return haptic->naxes;
452 }
453 
454 /*
455  * Checks to see if the device can support the effect.
456  */
457 int
459 {
460  if (!ValidHaptic(haptic)) {
461  return -1;
462  }
463 
464  if ((haptic->supported & effect->type) != 0)
465  return SDL_TRUE;
466  return SDL_FALSE;
467 }
468 
469 /*
470  * Creates a new haptic effect.
471  */
472 int
474 {
475  int i;
476 
477  /* Check for device validity. */
478  if (!ValidHaptic(haptic)) {
479  return -1;
480  }
481 
482  /* Check to see if effect is supported */
483  if (SDL_HapticEffectSupported(haptic, effect) == SDL_FALSE) {
484  return SDL_SetError("Haptic: Effect not supported by haptic device.");
485  }
486 
487  /* See if there's a free slot */
488  for (i = 0; i < haptic->neffects; i++) {
489  if (haptic->effects[i].hweffect == NULL) {
490 
491  /* Now let the backend create the real effect */
492  if (SDL_SYS_HapticNewEffect(haptic, &haptic->effects[i], effect)
493  != 0) {
494  return -1; /* Backend failed to create effect */
495  }
496 
497  SDL_memcpy(&haptic->effects[i].effect, effect,
498  sizeof(SDL_HapticEffect));
499  return i;
500  }
501  }
502 
503  return SDL_SetError("Haptic: Device has no free space left.");
504 }
505 
506 /*
507  * Checks to see if an effect is valid.
508  */
509 static int
510 ValidEffect(SDL_Haptic * haptic, int effect)
511 {
512  if ((effect < 0) || (effect >= haptic->neffects)) {
513  SDL_SetError("Haptic: Invalid effect identifier.");
514  return 0;
515  }
516  return 1;
517 }
518 
519 /*
520  * Updates an effect.
521  */
522 int
523 SDL_HapticUpdateEffect(SDL_Haptic * haptic, int effect,
525 {
526  if (!ValidHaptic(haptic) || !ValidEffect(haptic, effect)) {
527  return -1;
528  }
529 
530  /* Can't change type dynamically. */
531  if (data->type != haptic->effects[effect].effect.type) {
532  return SDL_SetError("Haptic: Updating effect type is illegal.");
533  }
534 
535  /* Updates the effect */
536  if (SDL_SYS_HapticUpdateEffect(haptic, &haptic->effects[effect], data) <
537  0) {
538  return -1;
539  }
540 
541  SDL_memcpy(&haptic->effects[effect].effect, data,
542  sizeof(SDL_HapticEffect));
543  return 0;
544 }
545 
546 
547 /*
548  * Runs the haptic effect on the device.
549  */
550 int
551 SDL_HapticRunEffect(SDL_Haptic * haptic, int effect, Uint32 iterations)
552 {
553  if (!ValidHaptic(haptic) || !ValidEffect(haptic, effect)) {
554  return -1;
555  }
556 
557  /* Run the effect */
558  if (SDL_SYS_HapticRunEffect(haptic, &haptic->effects[effect], iterations)
559  < 0) {
560  return -1;
561  }
562 
563  return 0;
564 }
565 
566 /*
567  * Stops the haptic effect on the device.
568  */
569 int
570 SDL_HapticStopEffect(SDL_Haptic * haptic, int effect)
571 {
572  if (!ValidHaptic(haptic) || !ValidEffect(haptic, effect)) {
573  return -1;
574  }
575 
576  /* Stop the effect */
577  if (SDL_SYS_HapticStopEffect(haptic, &haptic->effects[effect]) < 0) {
578  return -1;
579  }
580 
581  return 0;
582 }
583 
584 /*
585  * Gets rid of a haptic effect.
586  */
587 void
588 SDL_HapticDestroyEffect(SDL_Haptic * haptic, int effect)
589 {
590  if (!ValidHaptic(haptic) || !ValidEffect(haptic, effect)) {
591  return;
592  }
593 
594  /* Not allocated */
595  if (haptic->effects[effect].hweffect == NULL) {
596  return;
597  }
598 
599  SDL_SYS_HapticDestroyEffect(haptic, &haptic->effects[effect]);
600 }
601 
602 /*
603  * Gets the status of a haptic effect.
604  */
605 int
606 SDL_HapticGetEffectStatus(SDL_Haptic * haptic, int effect)
607 {
608  if (!ValidHaptic(haptic) || !ValidEffect(haptic, effect)) {
609  return -1;
610  }
611 
612  if ((haptic->supported & SDL_HAPTIC_STATUS) == 0) {
613  return SDL_SetError("Haptic: Device does not support status queries.");
614  }
615 
616  return SDL_SYS_HapticGetEffectStatus(haptic, &haptic->effects[effect]);
617 }
618 
619 /*
620  * Sets the global gain of the device.
621  */
622 int
623 SDL_HapticSetGain(SDL_Haptic * haptic, int gain)
624 {
625  const char *env;
626  int real_gain, max_gain;
627 
628  if (!ValidHaptic(haptic)) {
629  return -1;
630  }
631 
632  if ((haptic->supported & SDL_HAPTIC_GAIN) == 0) {
633  return SDL_SetError("Haptic: Device does not support setting gain.");
634  }
635 
636  if ((gain < 0) || (gain > 100)) {
637  return SDL_SetError("Haptic: Gain must be between 0 and 100.");
638  }
639 
640  /* We use the envvar to get the maximum gain. */
641  env = SDL_getenv("SDL_HAPTIC_GAIN_MAX");
642  if (env != NULL) {
643  max_gain = SDL_atoi(env);
644 
645  /* Check for sanity. */
646  if (max_gain < 0)
647  max_gain = 0;
648  else if (max_gain > 100)
649  max_gain = 100;
650 
651  /* We'll scale it linearly with SDL_HAPTIC_GAIN_MAX */
652  real_gain = (gain * max_gain) / 100;
653  } else {
654  real_gain = gain;
655  }
656 
657  if (SDL_SYS_HapticSetGain(haptic, real_gain) < 0) {
658  return -1;
659  }
660 
661  return 0;
662 }
663 
664 /*
665  * Makes the device autocenter, 0 disables.
666  */
667 int
668 SDL_HapticSetAutocenter(SDL_Haptic * haptic, int autocenter)
669 {
670  if (!ValidHaptic(haptic)) {
671  return -1;
672  }
673 
674  if ((haptic->supported & SDL_HAPTIC_AUTOCENTER) == 0) {
675  return SDL_SetError("Haptic: Device does not support setting autocenter.");
676  }
677 
678  if ((autocenter < 0) || (autocenter > 100)) {
679  return SDL_SetError("Haptic: Autocenter must be between 0 and 100.");
680  }
681 
682  if (SDL_SYS_HapticSetAutocenter(haptic, autocenter) < 0) {
683  return -1;
684  }
685 
686  return 0;
687 }
688 
689 /*
690  * Pauses the haptic device.
691  */
692 int
693 SDL_HapticPause(SDL_Haptic * haptic)
694 {
695  if (!ValidHaptic(haptic)) {
696  return -1;
697  }
698 
699  if ((haptic->supported & SDL_HAPTIC_PAUSE) == 0) {
700  return SDL_SetError("Haptic: Device does not support setting pausing.");
701  }
702 
703  return SDL_SYS_HapticPause(haptic);
704 }
705 
706 /*
707  * Unpauses the haptic device.
708  */
709 int
711 {
712  if (!ValidHaptic(haptic)) {
713  return -1;
714  }
715 
716  if ((haptic->supported & SDL_HAPTIC_PAUSE) == 0) {
717  return 0; /* Not going to be paused, so we pretend it's unpaused. */
718  }
719 
720  return SDL_SYS_HapticUnpause(haptic);
721 }
722 
723 /*
724  * Stops all the currently playing effects.
725  */
726 int
728 {
729  if (!ValidHaptic(haptic)) {
730  return -1;
731  }
732 
733  return SDL_SYS_HapticStopAll(haptic);
734 }
735 
736 /*
737  * Checks to see if rumble is supported.
738  */
739 int
741 {
742  if (!ValidHaptic(haptic)) {
743  return -1;
744  }
745 
746  /* Most things can use SINE, but XInput only has LEFTRIGHT. */
747  return ((haptic->supported & (SDL_HAPTIC_SINE|SDL_HAPTIC_LEFTRIGHT)) != 0);
748 }
749 
750 /*
751  * Initializes the haptic device for simple rumble playback.
752  */
753 int
755 {
756  SDL_HapticEffect *efx = &haptic->rumble_effect;
757 
758  if (!ValidHaptic(haptic)) {
759  return -1;
760  }
761 
762  /* Already allocated. */
763  if (haptic->rumble_id >= 0) {
764  return 0;
765  }
766 
767  SDL_zerop(efx);
768  if (haptic->supported & SDL_HAPTIC_SINE) {
769  efx->type = SDL_HAPTIC_SINE;
771  efx->periodic.period = 1000;
772  efx->periodic.magnitude = 0x4000;
773  efx->periodic.length = 5000;
774  efx->periodic.attack_length = 0;
775  efx->periodic.fade_length = 0;
776  } else if (haptic->supported & SDL_HAPTIC_LEFTRIGHT) { /* XInput? */
777  efx->type = SDL_HAPTIC_LEFTRIGHT;
778  efx->leftright.length = 5000;
779  efx->leftright.large_magnitude = 0x4000;
780  efx->leftright.small_magnitude = 0x4000;
781  } else {
782  return SDL_SetError("Device doesn't support rumble");
783  }
784 
785  haptic->rumble_id = SDL_HapticNewEffect(haptic, &haptic->rumble_effect);
786  if (haptic->rumble_id >= 0) {
787  return 0;
788  }
789  return -1;
790 }
791 
792 /*
793  * Runs simple rumble on a haptic device
794  */
795 int
796 SDL_HapticRumblePlay(SDL_Haptic * haptic, float strength, Uint32 length)
797 {
798  SDL_HapticEffect *efx;
799  Sint16 magnitude;
800 
801  if (!ValidHaptic(haptic)) {
802  return -1;
803  }
804 
805  if (haptic->rumble_id < 0) {
806  return SDL_SetError("Haptic: Rumble effect not initialized on haptic device");
807  }
808 
809  /* Clamp strength. */
810  if (strength > 1.0f) {
811  strength = 1.0f;
812  } else if (strength < 0.0f) {
813  strength = 0.0f;
814  }
815  magnitude = (Sint16)(32767.0f*strength);
816 
817  efx = &haptic->rumble_effect;
818  if (efx->type == SDL_HAPTIC_SINE) {
819  efx->periodic.magnitude = magnitude;
820  efx->periodic.length = length;
821  } else if (efx->type == SDL_HAPTIC_LEFTRIGHT) {
822  efx->leftright.small_magnitude = efx->leftright.large_magnitude = magnitude;
823  efx->leftright.length = length;
824  } else {
825  SDL_assert(0 && "This should have been caught elsewhere");
826  }
827 
828  if (SDL_HapticUpdateEffect(haptic, haptic->rumble_id, &haptic->rumble_effect) < 0) {
829  return -1;
830  }
831 
832  return SDL_HapticRunEffect(haptic, haptic->rumble_id, 1);
833 }
834 
835 /*
836  * Stops the simple rumble on a haptic device.
837  */
838 int
840 {
841  if (!ValidHaptic(haptic)) {
842  return -1;
843  }
844 
845  if (haptic->rumble_id < 0) {
846  return SDL_SetError("Haptic: Rumble effect not initialized on haptic device");
847  }
848 
849  return SDL_HapticStopEffect(haptic, haptic->rumble_id);
850 }
851 
852 /* vi: set ts=4 sw=4 expandtab: */
int SDL_SYS_HapticOpenFromJoystick(SDL_Haptic *haptic, SDL_Joystick *joystick)
int SDL_HapticRumbleStop(SDL_Haptic *haptic)
Stops the simple rumble on a haptic device.
Definition: SDL_haptic.c:839
int SDL_HapticStopAll(SDL_Haptic *haptic)
Stops all the currently playing effects on a haptic device.
Definition: SDL_haptic.c:727
int SDL_HapticUnpause(SDL_Haptic *haptic)
Unpauses a haptic device.
Definition: SDL_haptic.c:710
const char * SDL_HapticName(int device_index)
Get the implementation dependent name of a haptic device.
Definition: SDL_haptic.c:93
int SDL_PrivateJoystickValid(SDL_Joystick *joystick)
Definition: SDL_joystick.c:394
int SDL_HapticRumbleInit(SDL_Haptic *haptic)
Initializes the haptic device for simple rumble playback.
Definition: SDL_haptic.c:754
void SDL_HapticQuit(void)
Definition: SDL_haptic.c:390
#define SDL_HAPTIC_AUTOCENTER
Device can set autocenter.
Definition: SDL_haptic.h:291
#define SDL_HAPTIC_GAIN
Device can set global gain.
Definition: SDL_haptic.h:282
int SDL_HapticRumbleSupported(SDL_Haptic *haptic)
Checks to see if rumble is supported on a haptic device.
Definition: SDL_haptic.c:740
int16_t Sint16
Definition: SDL_stdinc.h:185
int SDL_SYS_HapticOpen(SDL_Haptic *haptic)
int SDL_HapticGetEffectStatus(SDL_Haptic *haptic, int effect)
Gets the status of the current effect on the haptic device.
Definition: SDL_haptic.c:606
int SDL_SYS_HapticMouse(void)
int SDL_SYS_JoystickSameHaptic(SDL_Haptic *haptic, SDL_Joystick *joystick)
uint8_t Uint8
Definition: SDL_stdinc.h:179
int SDL_SYS_HapticStopEffect(SDL_Haptic *haptic, struct haptic_effect *effect)
const char * SDL_SYS_HapticName(int index)
GLfloat f
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: SDL_opengl.h:1974
int SDL_HapticPause(SDL_Haptic *haptic)
Pauses a haptic device.
Definition: SDL_haptic.c:693
int SDL_HapticNewEffect(SDL_Haptic *haptic, SDL_HapticEffect *effect)
Creates a new haptic effect on the device.
Definition: SDL_haptic.c:473
int SDL_SYS_HapticUnpause(SDL_Haptic *haptic)
static int iterations
Definition: testsprite2.c:43
SDL_Haptic * SDL_HapticOpen(int device_index)
Opens a haptic device for use.
Definition: SDL_haptic.c:108
int SDL_SYS_NumHaptics(void)
#define SDL_HAPTIC_SINE
Sine wave effect supported.
Definition: SDL_haptic.h:172
uint32_t Uint32
Definition: SDL_stdinc.h:203
#define SDL_zerop(x)
Definition: SDL_stdinc.h:417
int SDL_HapticNumEffectsPlaying(SDL_Haptic *haptic)
Returns the number of effects a haptic device can play at the same time.
Definition: SDL_haptic.c:417
int SDL_SYS_HapticGetEffectStatus(SDL_Haptic *haptic, struct haptic_effect *effect)
#define SDL_HAPTIC_CARTESIAN
Uses cartesian coordinates for the direction.
Definition: SDL_haptic.h:330
int SDL_HapticIndex(SDL_Haptic *haptic)
Gets the index of a haptic device.
Definition: SDL_haptic.c:200
#define SDL_memcpy
int SDL_HapticEffectSupported(SDL_Haptic *haptic, SDL_HapticEffect *effect)
Checks to see if effect is supported by haptic.
Definition: SDL_haptic.c:458
The generic template for any haptic effect.
Definition: SDL_haptic.h:800
int SDL_SYS_HapticSetAutocenter(SDL_Haptic *haptic, int autocenter)
int SDL_JoystickIsHaptic(SDL_Joystick *joystick)
Checks to see if a joystick has haptic features.
Definition: SDL_haptic.c:245
int SDL_HapticSetGain(SDL_Haptic *haptic, int gain)
Sets the global gain of the device.
Definition: SDL_haptic.c:623
#define SDL_free
int SDL_HapticRumblePlay(SDL_Haptic *haptic, float strength, Uint32 length)
Runs simple rumble on a haptic device.
Definition: SDL_haptic.c:796
int SDL_HapticRunEffect(SDL_Haptic *haptic, int effect, Uint32 iterations)
Runs the haptic effect on its associated haptic device.
Definition: SDL_haptic.c:551
int SDL_NumHaptics(void)
Count the number of haptic devices attached to the system.
Definition: SDL_haptic.c:83
static int ValidHaptic(SDL_Haptic *haptic)
Definition: SDL_haptic.c:52
#define SDL_HAPTIC_PAUSE
Device can be paused.
Definition: SDL_haptic.h:310
int SDL_SYS_HapticUpdateEffect(SDL_Haptic *haptic, struct haptic_effect *effect, SDL_HapticEffect *data)
int SDL_MouseIsHaptic(void)
Gets whether or not the current mouse has haptic capabilities.
Definition: SDL_haptic.c:214
int SDL_SYS_JoystickIsHaptic(SDL_Joystick *joystick)
#define SDL_atoi
int SDL_HapticSetAutocenter(SDL_Haptic *haptic, int autocenter)
Sets the global autocenter of the device.
Definition: SDL_haptic.c:668
#define SDL_getenv
void SDL_SYS_HapticDestroyEffect(SDL_Haptic *haptic, struct haptic_effect *effect)
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:50
#define SDL_assert(condition)
Definition: SDL_assert.h:169
#define NULL
Definition: begin_code.h:164
#define SDL_OutOfMemory()
Definition: SDL_error.h:52
static SDL_Haptic * haptic
Definition: testhaptic.c:25
int SDL_SYS_HapticInit(void)
void SDL_SYS_HapticQuit(void)
#define SDL_SetError
#define SDL_HAPTIC_STATUS
Device can be queried for effect status.
Definition: SDL_haptic.h:300
void SDL_SYS_HapticClose(SDL_Haptic *haptic)
int SDL_SYS_HapticPause(SDL_Haptic *haptic)
SDL_HapticDirection direction
Definition: SDL_haptic.h:555
SDL_HapticLeftRight leftright
Definition: SDL_haptic.h:808
int SDL_HapticNumAxes(SDL_Haptic *haptic)
Gets the number of haptic axes the device has.
Definition: SDL_haptic.c:445
int SDL_HapticNumEffects(SDL_Haptic *haptic)
Returns the number of effects a haptic device can store.
Definition: SDL_haptic.c:403
static int ValidEffect(SDL_Haptic *haptic, int effect)
Definition: SDL_haptic.c:510
void SDL_HapticDestroyEffect(SDL_Haptic *haptic, int effect)
Destroys a haptic effect on the device.
Definition: SDL_haptic.c:588
int SDL_SYS_HapticStopAll(SDL_Haptic *haptic)
int SDL_HapticUpdateEffect(SDL_Haptic *haptic, int effect, SDL_HapticEffect *data)
Updates the properties of an effect.
Definition: SDL_haptic.c:523
#define SDL_malloc
int SDL_SYS_HapticSetGain(SDL_Haptic *haptic, int gain)
unsigned int SDL_HapticQuery(SDL_Haptic *haptic)
Gets the haptic device&#39;s supported features in bitwise manner.
Definition: SDL_haptic.c:431
GLuint GLsizei GLsizei * length
#define SDL_HAPTIC_LEFTRIGHT
Left/Right effect supported.
Definition: SDL_haptic.h:183
int SDL_HapticInit(void)
Definition: SDL_haptic.c:35
int SDL_SYS_HapticRunEffect(SDL_Haptic *haptic, struct haptic_effect *effect, Uint32 iterations)
SDL_HapticPeriodic periodic
Definition: SDL_haptic.h:805
int SDL_HapticStopEffect(SDL_Haptic *haptic, int effect)
Stops the haptic effect on its associated haptic device.
Definition: SDL_haptic.c:570
#define SDL_memset
void SDL_HapticClose(SDL_Haptic *haptic)
Closes a haptic device previously opened with SDL_HapticOpen().
Definition: SDL_haptic.c:335
int SDL_HapticOpened(int device_index)
Checks if the haptic device at index has been opened.
Definition: SDL_haptic.c:169
int SDL_SYS_HapticNewEffect(SDL_Haptic *haptic, struct haptic_effect *effect, SDL_HapticEffect *base)
SDL_Haptic * SDL_HapticOpenFromMouse(void)
Tries to open a haptic device from the current mouse.
Definition: SDL_haptic.c:226
SDL_Haptic * SDL_haptics
Definition: SDL_haptic.c:29
SDL_Haptic * SDL_HapticOpenFromJoystick(SDL_Joystick *joystick)
Opens a haptic device for use from a joystick device.
Definition: SDL_haptic.c:269