SDL  2.0
SDL_gamecontroller.c
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1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2019 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 /* This is the game controller API for Simple DirectMedia Layer */
24 
25 #include "SDL_events.h"
26 #include "SDL_assert.h"
27 #include "SDL_hints.h"
28 #include "SDL_timer.h"
29 #include "SDL_sysjoystick.h"
30 #include "SDL_joystick_c.h"
31 #include "SDL_gamecontrollerdb.h"
32 
33 #if !SDL_EVENTS_DISABLED
34 #include "../events/SDL_events_c.h"
35 #endif
36 
37 #if defined(__ANDROID__)
38 #include "SDL_system.h"
39 #endif
40 
41 
42 /* Many controllers turn the center button into an instantaneous button press */
43 #define SDL_MINIMUM_GUIDE_BUTTON_DELAY_MS 250
44 
45 #define SDL_CONTROLLER_PLATFORM_FIELD "platform:"
46 
47 /* a list of currently opened game controllers */
48 static SDL_GameController *SDL_gamecontrollers = NULL;
49 
50 typedef struct
51 {
53  union
54  {
55  int button;
56 
57  struct {
58  int axis;
59  int axis_min;
60  int axis_max;
61  } axis;
62 
63  struct {
64  int hat;
65  int hat_mask;
66  } hat;
67 
68  } input;
69 
71  union
72  {
74 
75  struct {
77  int axis_min;
78  int axis_max;
79  } axis;
80 
81  } output;
82 
84 
85 /* our hard coded list of mapping support */
86 typedef enum
87 {
92 
93 typedef struct _ControllerMapping_t
94 {
96  char *name;
97  char *mapping;
99  struct _ControllerMapping_t *next;
101 
107 
108 /* The SDL game controller structure */
110 {
111  SDL_Joystick *joystick; /* underlying joystick device */
113 
114  const char *name;
120 
121  struct _SDL_GameController *next; /* pointer to next game controller we have allocated */
122 };
123 
124 
125 typedef struct
126 {
131 
134 
135 static void
137 {
138  Uint32 entry;
139  char *spot;
140  char *file = NULL;
141 
142  list->num_entries = 0;
143 
144  if (hint && *hint == '@') {
145  spot = file = (char *)SDL_LoadFile(hint+1, NULL);
146  } else {
147  spot = (char *)hint;
148  }
149 
150  if (!spot) {
151  return;
152  }
153 
154  while ((spot = SDL_strstr(spot, "0x")) != NULL) {
155  entry = (Uint16)SDL_strtol(spot, &spot, 0);
156  entry <<= 16;
157  spot = SDL_strstr(spot, "0x");
158  if (!spot) {
159  break;
160  }
161  entry |= (Uint16)SDL_strtol(spot, &spot, 0);
162 
163  if (list->num_entries == list->max_entries) {
164  int max_entries = list->max_entries + 16;
165  Uint32 *entries = (Uint32 *)SDL_realloc(list->entries, max_entries*sizeof(*list->entries));
166  if (entries == NULL) {
167  /* Out of memory, go with what we have already */
168  break;
169  }
170  list->entries = entries;
171  list->max_entries = max_entries;
172  }
173  list->entries[list->num_entries++] = entry;
174  }
175 
176  if (file) {
177  SDL_free(file);
178  }
179 }
180 
181 static void SDLCALL
182 SDL_GameControllerIgnoreDevicesChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
183 {
184  SDL_LoadVIDPIDListFromHint(hint, &SDL_ignored_controllers);
185 }
186 
187 static void SDLCALL
188 SDL_GameControllerIgnoreDevicesExceptChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
189 {
190  SDL_LoadVIDPIDListFromHint(hint, &SDL_allowed_controllers);
191 }
192 
193 static int SDL_PrivateGameControllerAxis(SDL_GameController * gamecontroller, SDL_GameControllerAxis axis, Sint16 value);
194 static int SDL_PrivateGameControllerButton(SDL_GameController * gamecontroller, SDL_GameControllerButton button, Uint8 state);
195 
196 /*
197  * If there is an existing add event in the queue, it needs to be modified
198  * to have the right value for which, because the number of controllers in
199  * the system is now one less.
200  */
202 {
203  int i, num_events;
204  SDL_Event *events;
205  SDL_bool isstack;
206 
208  if (num_events <= 0) {
209  return;
210  }
211 
212  events = SDL_small_alloc(SDL_Event, num_events, &isstack);
213  if (!events) {
214  return;
215  }
216 
218  for (i = 0; i < num_events; ++i) {
219  --events[i].cdevice.which;
220  }
221  SDL_PeepEvents(events, num_events, SDL_ADDEVENT, 0, 0);
222 
223  SDL_small_free(events, isstack);
224 }
225 
227 {
228  if (a->outputType != b->outputType) {
229  return SDL_FALSE;
230  }
231 
233  return (a->output.axis.axis == b->output.axis.axis);
234  } else {
235  return (a->output.button == b->output.button);
236  }
237 }
238 
239 static void ResetOutput(SDL_GameController *gamecontroller, SDL_ExtendedGameControllerBind *bind)
240 {
242  SDL_PrivateGameControllerAxis(gamecontroller, bind->output.axis.axis, 0);
243  } else {
245  }
246 }
247 
248 static void HandleJoystickAxis(SDL_GameController *gamecontroller, int axis, int value)
249 {
250  int i;
251  SDL_ExtendedGameControllerBind *last_match = gamecontroller->last_match_axis[axis];
253 
254  for (i = 0; i < gamecontroller->num_bindings; ++i) {
255  SDL_ExtendedGameControllerBind *binding = &gamecontroller->bindings[i];
256  if (binding->inputType == SDL_CONTROLLER_BINDTYPE_AXIS &&
257  axis == binding->input.axis.axis) {
258  if (binding->input.axis.axis_min < binding->input.axis.axis_max) {
259  if (value >= binding->input.axis.axis_min &&
260  value <= binding->input.axis.axis_max) {
261  match = binding;
262  break;
263  }
264  } else {
265  if (value >= binding->input.axis.axis_max &&
266  value <= binding->input.axis.axis_min) {
267  match = binding;
268  break;
269  }
270  }
271  }
272  }
273 
274  if (last_match && (!match || !HasSameOutput(last_match, match))) {
275  /* Clear the last input that this axis generated */
276  ResetOutput(gamecontroller, last_match);
277  }
278 
279  if (match) {
281  if (match->input.axis.axis_min != match->output.axis.axis_min || match->input.axis.axis_max != match->output.axis.axis_max) {
282  float normalized_value = (float)(value - match->input.axis.axis_min) / (match->input.axis.axis_max - match->input.axis.axis_min);
283  value = match->output.axis.axis_min + (int)(normalized_value * (match->output.axis.axis_max - match->output.axis.axis_min));
284  }
285  SDL_PrivateGameControllerAxis(gamecontroller, match->output.axis.axis, (Sint16)value);
286  } else {
287  Uint8 state;
288  int threshold = match->input.axis.axis_min + (match->input.axis.axis_max - match->input.axis.axis_min) / 2;
289  if (match->input.axis.axis_max < match->input.axis.axis_min) {
290  state = (value <= threshold) ? SDL_PRESSED : SDL_RELEASED;
291  } else {
292  state = (value >= threshold) ? SDL_PRESSED : SDL_RELEASED;
293  }
294  SDL_PrivateGameControllerButton(gamecontroller, match->output.button, state);
295  }
296  }
297  gamecontroller->last_match_axis[axis] = match;
298 }
299 
300 static void HandleJoystickButton(SDL_GameController *gamecontroller, int button, Uint8 state)
301 {
302  int i;
303 
304  for (i = 0; i < gamecontroller->num_bindings; ++i) {
305  SDL_ExtendedGameControllerBind *binding = &gamecontroller->bindings[i];
306  if (binding->inputType == SDL_CONTROLLER_BINDTYPE_BUTTON &&
307  button == binding->input.button) {
308  if (binding->outputType == SDL_CONTROLLER_BINDTYPE_AXIS) {
309  int value = state ? binding->output.axis.axis_max : binding->output.axis.axis_min;
310  SDL_PrivateGameControllerAxis(gamecontroller, binding->output.axis.axis, (Sint16)value);
311  } else {
312  SDL_PrivateGameControllerButton(gamecontroller, binding->output.button, state);
313  }
314  break;
315  }
316  }
317 }
318 
319 static void HandleJoystickHat(SDL_GameController *gamecontroller, int hat, Uint8 value)
320 {
321  int i;
322  Uint8 last_mask = gamecontroller->last_hat_mask[hat];
323  Uint8 changed_mask = (last_mask ^ value);
324 
325  for (i = 0; i < gamecontroller->num_bindings; ++i) {
326  SDL_ExtendedGameControllerBind *binding = &gamecontroller->bindings[i];
327  if (binding->inputType == SDL_CONTROLLER_BINDTYPE_HAT && hat == binding->input.hat.hat) {
328  if ((changed_mask & binding->input.hat.hat_mask) != 0) {
329  if (value & binding->input.hat.hat_mask) {
330  if (binding->outputType == SDL_CONTROLLER_BINDTYPE_AXIS) {
331  SDL_PrivateGameControllerAxis(gamecontroller, binding->output.axis.axis, (Sint16)binding->output.axis.axis_max);
332  } else {
333  SDL_PrivateGameControllerButton(gamecontroller, binding->output.button, SDL_PRESSED);
334  }
335  } else {
336  ResetOutput(gamecontroller, binding);
337  }
338  }
339  }
340  }
341  gamecontroller->last_hat_mask[hat] = value;
342 }
343 
344 /*
345  * Event filter to fire controller events from joystick ones
346  */
348 {
349  switch(event->type) {
350  case SDL_JOYAXISMOTION:
351  {
352  SDL_GameController *controllerlist = SDL_gamecontrollers;
353  while (controllerlist) {
354  if (controllerlist->joystick->instance_id == event->jaxis.which) {
355  HandleJoystickAxis(controllerlist, event->jaxis.axis, event->jaxis.value);
356  break;
357  }
358  controllerlist = controllerlist->next;
359  }
360  }
361  break;
362  case SDL_JOYBUTTONDOWN:
363  case SDL_JOYBUTTONUP:
364  {
365  SDL_GameController *controllerlist = SDL_gamecontrollers;
366  while (controllerlist) {
367  if (controllerlist->joystick->instance_id == event->jbutton.which) {
368  HandleJoystickButton(controllerlist, event->jbutton.button, event->jbutton.state);
369  break;
370  }
371  controllerlist = controllerlist->next;
372  }
373  }
374  break;
375  case SDL_JOYHATMOTION:
376  {
377  SDL_GameController *controllerlist = SDL_gamecontrollers;
378  while (controllerlist) {
379  if (controllerlist->joystick->instance_id == event->jhat.which) {
380  HandleJoystickHat(controllerlist, event->jhat.hat, event->jhat.value);
381  break;
382  }
383  controllerlist = controllerlist->next;
384  }
385  }
386  break;
387  case SDL_JOYDEVICEADDED:
388  {
389  if (SDL_IsGameController(event->jdevice.which)) {
390  SDL_Event deviceevent;
391  deviceevent.type = SDL_CONTROLLERDEVICEADDED;
392  deviceevent.cdevice.which = event->jdevice.which;
393  SDL_PushEvent(&deviceevent);
394  }
395  }
396  break;
398  {
399  SDL_GameController *controllerlist = SDL_gamecontrollers;
400  while (controllerlist) {
401  if (controllerlist->joystick->instance_id == event->jdevice.which) {
402  SDL_Event deviceevent;
403 
404  deviceevent.type = SDL_CONTROLLERDEVICEREMOVED;
405  deviceevent.cdevice.which = event->jdevice.which;
406  SDL_PushEvent(&deviceevent);
407 
409  break;
410  }
411  controllerlist = controllerlist->next;
412  }
413  }
414  break;
415  default:
416  break;
417  }
418 
419  return 1;
420 }
421 
422 /*
423  * Helper function to scan the mappings database for a controller with the specified GUID
424  */
426 {
427  ControllerMapping_t *pSupportedController = s_pSupportedControllers;
428  while (pSupportedController) {
429  if (SDL_memcmp(guid, &pSupportedController->guid, sizeof(*guid)) == 0) {
430  return pSupportedController;
431  }
432  pSupportedController = pSupportedController->next;
433  }
434  if (!exact_match) {
435  if (SDL_IsJoystickHIDAPI(*guid)) {
436  /* This is a HIDAPI device */
437  return s_pHIDAPIMapping;
438  }
439 #if SDL_JOYSTICK_XINPUT
440  if (SDL_IsJoystickXInput(*guid)) {
441  /* This is an XInput device */
442  return s_pXInputMapping;
443  }
444 #endif
445  }
446  return NULL;
447 }
448 
449 static const char* map_StringForControllerAxis[] = {
450  "leftx",
451  "lefty",
452  "rightx",
453  "righty",
454  "lefttrigger",
455  "righttrigger",
456  NULL
457 };
458 
459 /*
460  * convert a string to its enum equivalent
461  */
463 {
464  int entry;
465 
466  if (pchString && (*pchString == '+' || *pchString == '-')) {
467  ++pchString;
468  }
469 
470  if (!pchString || !pchString[0]) {
472  }
473 
474  for (entry = 0; map_StringForControllerAxis[entry]; ++entry) {
475  if (!SDL_strcasecmp(pchString, map_StringForControllerAxis[entry]))
476  return (SDL_GameControllerAxis) entry;
477  }
479 }
480 
481 /*
482  * convert an enum to its string equivalent
483  */
485 {
488  }
489  return NULL;
490 }
491 
492 static const char* map_StringForControllerButton[] = {
493  "a",
494  "b",
495  "x",
496  "y",
497  "back",
498  "guide",
499  "start",
500  "leftstick",
501  "rightstick",
502  "leftshoulder",
503  "rightshoulder",
504  "dpup",
505  "dpdown",
506  "dpleft",
507  "dpright",
508  NULL
509 };
510 
511 /*
512  * convert a string to its enum equivalent
513  */
515 {
516  int entry;
517  if (!pchString || !pchString[0])
519 
520  for (entry = 0; map_StringForControllerButton[entry]; ++entry) {
521  if (SDL_strcasecmp(pchString, map_StringForControllerButton[entry]) == 0)
522  return (SDL_GameControllerButton) entry;
523  }
525 }
526 
527 /*
528  * convert an enum to its string equivalent
529  */
531 {
534  }
535  return NULL;
536 }
537 
538 /*
539  * given a controller button name and a joystick name update our mapping structure with it
540  */
541 static void SDL_PrivateGameControllerParseElement(SDL_GameController *gamecontroller, const char *szGameButton, const char *szJoystickButton)
542 {
546  SDL_bool invert_input = SDL_FALSE;
547  char half_axis_input = 0;
548  char half_axis_output = 0;
549 
550  if (*szGameButton == '+' || *szGameButton == '-') {
551  half_axis_output = *szGameButton++;
552  }
553 
554  axis = SDL_GameControllerGetAxisFromString(szGameButton);
555  button = SDL_GameControllerGetButtonFromString(szGameButton);
556  if (axis != SDL_CONTROLLER_AXIS_INVALID) {
558  bind.output.axis.axis = axis;
560  bind.output.axis.axis_min = 0;
561  bind.output.axis.axis_max = SDL_JOYSTICK_AXIS_MAX;
562  } else {
563  if (half_axis_output == '+') {
564  bind.output.axis.axis_min = 0;
565  bind.output.axis.axis_max = SDL_JOYSTICK_AXIS_MAX;
566  } else if (half_axis_output == '-') {
567  bind.output.axis.axis_min = 0;
568  bind.output.axis.axis_max = SDL_JOYSTICK_AXIS_MIN;
569  } else {
570  bind.output.axis.axis_min = SDL_JOYSTICK_AXIS_MIN;
571  bind.output.axis.axis_max = SDL_JOYSTICK_AXIS_MAX;
572  }
573  }
574  } else if (button != SDL_CONTROLLER_BUTTON_INVALID) {
576  bind.output.button = button;
577  } else {
578  SDL_SetError("Unexpected controller element %s", szGameButton);
579  return;
580  }
581 
582  if (*szJoystickButton == '+' || *szJoystickButton == '-') {
583  half_axis_input = *szJoystickButton++;
584  }
585  if (szJoystickButton[SDL_strlen(szJoystickButton) - 1] == '~') {
586  invert_input = SDL_TRUE;
587  }
588 
589  if (szJoystickButton[0] == 'a' && SDL_isdigit(szJoystickButton[1])) {
591  bind.input.axis.axis = SDL_atoi(&szJoystickButton[1]);
592  if (half_axis_input == '+') {
593  bind.input.axis.axis_min = 0;
594  bind.input.axis.axis_max = SDL_JOYSTICK_AXIS_MAX;
595  } else if (half_axis_input == '-') {
596  bind.input.axis.axis_min = 0;
597  bind.input.axis.axis_max = SDL_JOYSTICK_AXIS_MIN;
598  } else {
599  bind.input.axis.axis_min = SDL_JOYSTICK_AXIS_MIN;
600  bind.input.axis.axis_max = SDL_JOYSTICK_AXIS_MAX;
601  }
602  if (invert_input) {
603  int tmp = bind.input.axis.axis_min;
604  bind.input.axis.axis_min = bind.input.axis.axis_max;
605  bind.input.axis.axis_max = tmp;
606  }
607  } else if (szJoystickButton[0] == 'b' && SDL_isdigit(szJoystickButton[1])) {
609  bind.input.button = SDL_atoi(&szJoystickButton[1]);
610  } else if (szJoystickButton[0] == 'h' && SDL_isdigit(szJoystickButton[1]) &&
611  szJoystickButton[2] == '.' && SDL_isdigit(szJoystickButton[3])) {
612  int hat = SDL_atoi(&szJoystickButton[1]);
613  int mask = SDL_atoi(&szJoystickButton[3]);
615  bind.input.hat.hat = hat;
616  bind.input.hat.hat_mask = mask;
617  } else {
618  SDL_SetError("Unexpected joystick element: %s", szJoystickButton);
619  return;
620  }
621 
622  ++gamecontroller->num_bindings;
623  gamecontroller->bindings = (SDL_ExtendedGameControllerBind *)SDL_realloc(gamecontroller->bindings, gamecontroller->num_bindings * sizeof(*gamecontroller->bindings));
624  if (!gamecontroller->bindings) {
625  gamecontroller->num_bindings = 0;
626  SDL_OutOfMemory();
627  return;
628  }
629  gamecontroller->bindings[gamecontroller->num_bindings - 1] = bind;
630 }
631 
632 
633 /*
634  * given a controller mapping string update our mapping object
635  */
636 static void
637 SDL_PrivateGameControllerParseControllerConfigString(SDL_GameController *gamecontroller, const char *pchString)
638 {
639  char szGameButton[20];
640  char szJoystickButton[20];
641  SDL_bool bGameButton = SDL_TRUE;
642  int i = 0;
643  const char *pchPos = pchString;
644 
645  SDL_zero(szGameButton);
646  SDL_zero(szJoystickButton);
647 
648  while (pchPos && *pchPos) {
649  if (*pchPos == ':') {
650  i = 0;
651  bGameButton = SDL_FALSE;
652  } else if (*pchPos == ' ') {
653 
654  } else if (*pchPos == ',') {
655  i = 0;
656  bGameButton = SDL_TRUE;
657  SDL_PrivateGameControllerParseElement(gamecontroller, szGameButton, szJoystickButton);
658  SDL_zero(szGameButton);
659  SDL_zero(szJoystickButton);
660 
661  } else if (bGameButton) {
662  if (i >= sizeof(szGameButton)) {
663  SDL_SetError("Button name too large: %s", szGameButton);
664  return;
665  }
666  szGameButton[i] = *pchPos;
667  i++;
668  } else {
669  if (i >= sizeof(szJoystickButton)) {
670  SDL_SetError("Joystick button name too large: %s", szJoystickButton);
671  return;
672  }
673  szJoystickButton[i] = *pchPos;
674  i++;
675  }
676  pchPos++;
677  }
678 
679  /* No more values if the string was terminated by a comma. Don't report an error. */
680  if (szGameButton[0] != '\0' || szJoystickButton[0] != '\0') {
681  SDL_PrivateGameControllerParseElement(gamecontroller, szGameButton, szJoystickButton);
682  }
683 }
684 
685 /*
686  * Make a new button mapping struct
687  */
688 static void SDL_PrivateLoadButtonMapping(SDL_GameController *gamecontroller, const char *pchName, const char *pchMapping)
689 {
690  int i;
691 
692  gamecontroller->name = pchName;
693  gamecontroller->num_bindings = 0;
694  SDL_memset(gamecontroller->last_match_axis, 0, gamecontroller->joystick->naxes * sizeof(*gamecontroller->last_match_axis));
695 
696  SDL_PrivateGameControllerParseControllerConfigString(gamecontroller, pchMapping);
697 
698  /* Set the zero point for triggers */
699  for (i = 0; i < gamecontroller->num_bindings; ++i) {
700  SDL_ExtendedGameControllerBind *binding = &gamecontroller->bindings[i];
701  if (binding->inputType == SDL_CONTROLLER_BINDTYPE_AXIS &&
703  (binding->output.axis.axis == SDL_CONTROLLER_AXIS_TRIGGERLEFT ||
704  binding->output.axis.axis == SDL_CONTROLLER_AXIS_TRIGGERRIGHT)) {
705  if (binding->input.axis.axis < gamecontroller->joystick->naxes) {
706  gamecontroller->joystick->axes[binding->input.axis.axis].value =
707  gamecontroller->joystick->axes[binding->input.axis.axis].zero = (Sint16)binding->input.axis.axis_min;
708  }
709  }
710  }
711 }
712 
713 
714 /*
715  * grab the guid string from a mapping string
716  */
717 static char *SDL_PrivateGetControllerGUIDFromMappingString(const char *pMapping)
718 {
719  const char *pFirstComma = SDL_strchr(pMapping, ',');
720  if (pFirstComma) {
721  char *pchGUID = SDL_malloc(pFirstComma - pMapping + 1);
722  if (!pchGUID) {
723  SDL_OutOfMemory();
724  return NULL;
725  }
726  SDL_memcpy(pchGUID, pMapping, pFirstComma - pMapping);
727  pchGUID[pFirstComma - pMapping] = '\0';
728 
729  /* Convert old style GUIDs to the new style in 2.0.5 */
730 #if __WIN32__
731  if (SDL_strlen(pchGUID) == 32 &&
732  SDL_memcmp(&pchGUID[20], "504944564944", 12) == 0) {
733  SDL_memcpy(&pchGUID[20], "000000000000", 12);
734  SDL_memcpy(&pchGUID[16], &pchGUID[4], 4);
735  SDL_memcpy(&pchGUID[8], &pchGUID[0], 4);
736  SDL_memcpy(&pchGUID[0], "03000000", 8);
737  }
738 #elif __MACOSX__
739  if (SDL_strlen(pchGUID) == 32 &&
740  SDL_memcmp(&pchGUID[4], "000000000000", 12) == 0 &&
741  SDL_memcmp(&pchGUID[20], "000000000000", 12) == 0) {
742  SDL_memcpy(&pchGUID[20], "000000000000", 12);
743  SDL_memcpy(&pchGUID[8], &pchGUID[0], 4);
744  SDL_memcpy(&pchGUID[0], "03000000", 8);
745  }
746 #endif
747  return pchGUID;
748  }
749  return NULL;
750 }
751 
752 
753 /*
754  * grab the name string from a mapping string
755  */
756 static char *SDL_PrivateGetControllerNameFromMappingString(const char *pMapping)
757 {
758  const char *pFirstComma, *pSecondComma;
759  char *pchName;
760 
761  pFirstComma = SDL_strchr(pMapping, ',');
762  if (!pFirstComma)
763  return NULL;
764 
765  pSecondComma = SDL_strchr(pFirstComma + 1, ',');
766  if (!pSecondComma)
767  return NULL;
768 
769  pchName = SDL_malloc(pSecondComma - pFirstComma);
770  if (!pchName) {
771  SDL_OutOfMemory();
772  return NULL;
773  }
774  SDL_memcpy(pchName, pFirstComma + 1, pSecondComma - pFirstComma);
775  pchName[pSecondComma - pFirstComma - 1] = 0;
776  return pchName;
777 }
778 
779 
780 /*
781  * grab the button mapping string from a mapping string
782  */
783 static char *SDL_PrivateGetControllerMappingFromMappingString(const char *pMapping)
784 {
785  const char *pFirstComma, *pSecondComma;
786 
787  pFirstComma = SDL_strchr(pMapping, ',');
788  if (!pFirstComma)
789  return NULL;
790 
791  pSecondComma = SDL_strchr(pFirstComma + 1, ',');
792  if (!pSecondComma)
793  return NULL;
794 
795  return SDL_strdup(pSecondComma + 1); /* mapping is everything after the 3rd comma */
796 }
797 
798 /*
799  * Helper function to refresh a mapping
800  */
802 {
803  SDL_GameController *gamecontrollerlist = SDL_gamecontrollers;
804  while (gamecontrollerlist) {
805  if (!SDL_memcmp(&gamecontrollerlist->joystick->guid, &pControllerMapping->guid, sizeof(pControllerMapping->guid))) {
806  /* Not really threadsafe. Should this lock access within SDL_GameControllerEventWatcher? */
807  SDL_PrivateLoadButtonMapping(gamecontrollerlist, pControllerMapping->name, pControllerMapping->mapping);
808 
809  {
811  event.type = SDL_CONTROLLERDEVICEREMAPPED;
812  event.cdevice.which = gamecontrollerlist->joystick->instance_id;
813  SDL_PushEvent(&event);
814  }
815  }
816 
817  gamecontrollerlist = gamecontrollerlist->next;
818  }
819 }
820 
821 /*
822  * Helper function to add a mapping for a guid
823  */
824 static ControllerMapping_t *
825 SDL_PrivateAddMappingForGUID(SDL_JoystickGUID jGUID, const char *mappingString, SDL_bool *existing, SDL_ControllerMappingPriority priority)
826 {
827  char *pchName;
828  char *pchMapping;
829  ControllerMapping_t *pControllerMapping;
830 
831  pchName = SDL_PrivateGetControllerNameFromMappingString(mappingString);
832  if (!pchName) {
833  SDL_SetError("Couldn't parse name from %s", mappingString);
834  return NULL;
835  }
836 
837  pchMapping = SDL_PrivateGetControllerMappingFromMappingString(mappingString);
838  if (!pchMapping) {
839  SDL_free(pchName);
840  SDL_SetError("Couldn't parse %s", mappingString);
841  return NULL;
842  }
843 
844  pControllerMapping = SDL_PrivateGetControllerMappingForGUID(&jGUID, SDL_TRUE);
845  if (pControllerMapping) {
846  /* Only overwrite the mapping if the priority is the same or higher. */
847  if (pControllerMapping->priority <= priority) {
848  /* Update existing mapping */
849  SDL_free(pControllerMapping->name);
850  pControllerMapping->name = pchName;
851  SDL_free(pControllerMapping->mapping);
852  pControllerMapping->mapping = pchMapping;
853  pControllerMapping->priority = priority;
854  /* refresh open controllers */
855  SDL_PrivateGameControllerRefreshMapping(pControllerMapping);
856  } else {
857  SDL_free(pchName);
858  SDL_free(pchMapping);
859  }
860  *existing = SDL_TRUE;
861  } else {
862  pControllerMapping = SDL_malloc(sizeof(*pControllerMapping));
863  if (!pControllerMapping) {
864  SDL_free(pchName);
865  SDL_free(pchMapping);
866  SDL_OutOfMemory();
867  return NULL;
868  }
869  pControllerMapping->guid = jGUID;
870  pControllerMapping->name = pchName;
871  pControllerMapping->mapping = pchMapping;
872  pControllerMapping->next = NULL;
873  pControllerMapping->priority = priority;
874 
875  if (s_pSupportedControllers) {
876  /* Add the mapping to the end of the list */
877  ControllerMapping_t *pCurrMapping, *pPrevMapping;
878 
879  for ( pPrevMapping = s_pSupportedControllers, pCurrMapping = pPrevMapping->next;
880  pCurrMapping;
881  pPrevMapping = pCurrMapping, pCurrMapping = pCurrMapping->next ) {
882  continue;
883  }
884  pPrevMapping->next = pControllerMapping;
885  } else {
886  s_pSupportedControllers = pControllerMapping;
887  }
888  *existing = SDL_FALSE;
889  }
890  return pControllerMapping;
891 }
892 
893 #ifdef __ANDROID__
894 /*
895  * Helper function to guess at a mapping based on the elements reported for this controller
896  */
897 static ControllerMapping_t *SDL_CreateMappingForAndroidController(const char *name, SDL_JoystickGUID guid)
898 {
899  SDL_bool existing;
900  char name_string[128];
901  char mapping_string[1024];
902  int button_mask;
903  int axis_mask;
904 
905  button_mask = SDL_SwapLE16(*(Uint16*)(&guid.data[sizeof(guid.data)-4]));
906  axis_mask = SDL_SwapLE16(*(Uint16*)(&guid.data[sizeof(guid.data)-2]));
907  if (!button_mask && !axis_mask) {
908  /* Accelerometer, shouldn't have a game controller mapping */
909  return NULL;
910  }
911 
912  /* Remove any commas in the name */
913  SDL_strlcpy(name_string, name, sizeof(name_string));
914  {
915  char *spot;
916  for (spot = name_string; *spot; ++spot) {
917  if (*spot == ',') {
918  *spot = ' ';
919  }
920  }
921  }
922  SDL_snprintf(mapping_string, sizeof(mapping_string), "none,%s,", name_string);
923  if (button_mask & (1 << SDL_CONTROLLER_BUTTON_A)) {
924  SDL_strlcat(mapping_string, "a:b0,", sizeof(mapping_string));
925  }
926  if (button_mask & (1 << SDL_CONTROLLER_BUTTON_B)) {
927  SDL_strlcat(mapping_string, "b:b1,", sizeof(mapping_string));
928  } else if (button_mask & (1 << SDL_CONTROLLER_BUTTON_BACK)) {
929  /* Use the back button as "B" for easy UI navigation with TV remotes */
930  SDL_strlcat(mapping_string, "b:b4,", sizeof(mapping_string));
931  button_mask &= ~(1 << SDL_CONTROLLER_BUTTON_BACK);
932  }
933  if (button_mask & (1 << SDL_CONTROLLER_BUTTON_X)) {
934  SDL_strlcat(mapping_string, "x:b2,", sizeof(mapping_string));
935  }
936  if (button_mask & (1 << SDL_CONTROLLER_BUTTON_Y)) {
937  SDL_strlcat(mapping_string, "y:b3,", sizeof(mapping_string));
938  }
939  if (button_mask & (1 << SDL_CONTROLLER_BUTTON_BACK)) {
940  SDL_strlcat(mapping_string, "back:b4,", sizeof(mapping_string));
941  }
942 #if 0 /* The guide button generally isn't functional (or acts as a home button) on most Android controllers */
943  if (button_mask & (1 << SDL_CONTROLLER_BUTTON_GUIDE)) {
944  SDL_strlcat(mapping_string, "guide:b5,", sizeof(mapping_string));
945 #if 0 /* Actually this will be done in Steam */
946  } else if (button_mask & (1 << SDL_CONTROLLER_BUTTON_START)) {
947  /* The guide button doesn't exist, use the start button instead,
948  so you can do Steam guide button chords and open the Steam overlay.
949  */
950  SDL_strlcat(mapping_string, "guide:b6,", sizeof(mapping_string));
951  button_mask &= ~(1 << SDL_CONTROLLER_BUTTON_START);
952 #endif
953  }
954 #endif
955  if (button_mask & (1 << SDL_CONTROLLER_BUTTON_START)) {
956  SDL_strlcat(mapping_string, "start:b6,", sizeof(mapping_string));
957  }
958  if (button_mask & (1 << SDL_CONTROLLER_BUTTON_LEFTSTICK)) {
959  SDL_strlcat(mapping_string, "leftstick:b7,", sizeof(mapping_string));
960  }
961  if (button_mask & (1 << SDL_CONTROLLER_BUTTON_RIGHTSTICK)) {
962  SDL_strlcat(mapping_string, "rightstick:b8,", sizeof(mapping_string));
963  }
964  if (button_mask & (1 << SDL_CONTROLLER_BUTTON_LEFTSHOULDER)) {
965  SDL_strlcat(mapping_string, "leftshoulder:b9,", sizeof(mapping_string));
966  }
967  if (button_mask & (1 << SDL_CONTROLLER_BUTTON_RIGHTSHOULDER)) {
968  SDL_strlcat(mapping_string, "rightshoulder:b10,", sizeof(mapping_string));
969  }
970  if (button_mask & (1 << SDL_CONTROLLER_BUTTON_DPAD_UP)) {
971  SDL_strlcat(mapping_string, "dpup:b11,", sizeof(mapping_string));
972  }
973  if (button_mask & (1 << SDL_CONTROLLER_BUTTON_DPAD_DOWN)) {
974  SDL_strlcat(mapping_string, "dpdown:b12,", sizeof(mapping_string));
975  }
976  if (button_mask & (1 << SDL_CONTROLLER_BUTTON_DPAD_LEFT)) {
977  SDL_strlcat(mapping_string, "dpleft:b13,", sizeof(mapping_string));
978  }
979  if (button_mask & (1 << SDL_CONTROLLER_BUTTON_DPAD_RIGHT)) {
980  SDL_strlcat(mapping_string, "dpright:b14,", sizeof(mapping_string));
981  }
982  if (axis_mask & (1 << SDL_CONTROLLER_AXIS_LEFTX)) {
983  SDL_strlcat(mapping_string, "leftx:a0,", sizeof(mapping_string));
984  }
985  if (axis_mask & (1 << SDL_CONTROLLER_AXIS_LEFTY)) {
986  SDL_strlcat(mapping_string, "lefty:a1,", sizeof(mapping_string));
987  }
988  if (axis_mask & (1 << SDL_CONTROLLER_AXIS_RIGHTX)) {
989  SDL_strlcat(mapping_string, "rightx:a2,", sizeof(mapping_string));
990  }
991  if (axis_mask & (1 << SDL_CONTROLLER_AXIS_RIGHTY)) {
992  SDL_strlcat(mapping_string, "righty:a3,", sizeof(mapping_string));
993  }
994  if (axis_mask & (1 << SDL_CONTROLLER_AXIS_TRIGGERLEFT)) {
995  SDL_strlcat(mapping_string, "lefttrigger:a4,", sizeof(mapping_string));
996  }
997  if (axis_mask & (1 << SDL_CONTROLLER_AXIS_TRIGGERRIGHT)) {
998  SDL_strlcat(mapping_string, "righttrigger:a5,", sizeof(mapping_string));
999  }
1000 
1001  /* Remove trailing comma */
1002  {
1003  int pos = (int)SDL_strlen(mapping_string) - 1;
1004  if (pos >= 0) {
1005  if (mapping_string[pos] == ',') {
1006  mapping_string[pos] = '\0';
1007  }
1008  }
1009  }
1010 
1011  return SDL_PrivateAddMappingForGUID(guid, mapping_string,
1013 }
1014 #endif /* __ANDROID__ */
1015 
1016 
1017 /*
1018  * Helper function to determine pre-calculated offset to certain joystick mappings
1019  */
1021 {
1023 
1025 #ifdef __LINUX__
1026  if (!mapping && name) {
1027  if (SDL_strstr(name, "Xbox 360 Wireless Receiver")) {
1028  /* The Linux driver xpad.c maps the wireless dpad to buttons */
1029  SDL_bool existing;
1030  mapping = SDL_PrivateAddMappingForGUID(guid,
1031 "none,X360 Wireless Controller,a:b0,b:b1,back:b6,dpdown:b14,dpleft:b11,dpright:b12,dpup:b13,guide:b8,leftshoulder:b4,leftstick:b9,lefttrigger:a2,leftx:a0,lefty:a1,rightshoulder:b5,rightstick:b10,righttrigger:a5,rightx:a3,righty:a4,start:b7,x:b2,y:b3",
1033  }
1034  }
1035 #endif /* __LINUX__ */
1036 
1037  if (!mapping && name) {
1038  if (SDL_strstr(name, "Xbox") || SDL_strstr(name, "X-Box") || SDL_strstr(name, "XBOX")) {
1039  mapping = s_pXInputMapping;
1040  }
1041  }
1042 #ifdef __ANDROID__
1043  if (!mapping && name && !SDL_IsJoystickHIDAPI(guid)) {
1044  mapping = SDL_CreateMappingForAndroidController(name, guid);
1045  }
1046 #endif
1047  if (!mapping) {
1048  mapping = s_pDefaultMapping;
1049  }
1050  return mapping;
1051 }
1052 
1054 {
1055  const char *name;
1056  SDL_JoystickGUID guid;
1058 
1060 
1061  if ((device_index < 0) || (device_index >= SDL_NumJoysticks())) {
1062  SDL_SetError("There are %d joysticks available", SDL_NumJoysticks());
1064  return (NULL);
1065  }
1066 
1067  name = SDL_JoystickNameForIndex(device_index);
1068  guid = SDL_JoystickGetDeviceGUID(device_index);
1069  mapping = SDL_PrivateGetControllerMappingForNameAndGUID(name, guid);
1071  return mapping;
1072 }
1073 
1074 /*
1075  * Add or update an entry into the Mappings Database
1076  */
1077 int
1079 {
1080  const char *platform = SDL_GetPlatform();
1081  int controllers = 0;
1082  char *buf, *line, *line_end, *tmp, *comma, line_platform[64];
1083  size_t db_size, platform_len;
1084 
1085  if (rw == NULL) {
1086  return SDL_SetError("Invalid RWops");
1087  }
1088  db_size = (size_t)SDL_RWsize(rw);
1089 
1090  buf = (char *)SDL_malloc(db_size + 1);
1091  if (buf == NULL) {
1092  if (freerw) {
1093  SDL_RWclose(rw);
1094  }
1095  return SDL_SetError("Could not allocate space to read DB into memory");
1096  }
1097 
1098  if (SDL_RWread(rw, buf, db_size, 1) != 1) {
1099  if (freerw) {
1100  SDL_RWclose(rw);
1101  }
1102  SDL_free(buf);
1103  return SDL_SetError("Could not read DB");
1104  }
1105 
1106  if (freerw) {
1107  SDL_RWclose(rw);
1108  }
1109 
1110  buf[db_size] = '\0';
1111  line = buf;
1112 
1113  while (line < buf + db_size) {
1114  line_end = SDL_strchr(line, '\n');
1115  if (line_end != NULL) {
1116  *line_end = '\0';
1117  } else {
1118  line_end = buf + db_size;
1119  }
1120 
1121  /* Extract and verify the platform */
1123  if (tmp != NULL) {
1125  comma = SDL_strchr(tmp, ',');
1126  if (comma != NULL) {
1127  platform_len = comma - tmp + 1;
1128  if (platform_len + 1 < SDL_arraysize(line_platform)) {
1129  SDL_strlcpy(line_platform, tmp, platform_len);
1130  if (SDL_strncasecmp(line_platform, platform, platform_len) == 0 &&
1131  SDL_GameControllerAddMapping(line) > 0) {
1132  controllers++;
1133  }
1134  }
1135  }
1136  }
1137 
1138  line = line_end + 1;
1139  }
1140 
1141  SDL_free(buf);
1142  return controllers;
1143 }
1144 
1145 /*
1146  * Add or update an entry into the Mappings Database with a priority
1147  */
1148 static int
1150 {
1151  char *pchGUID;
1152  SDL_JoystickGUID jGUID;
1153  SDL_bool is_default_mapping = SDL_FALSE;
1154  SDL_bool is_hidapi_mapping = SDL_FALSE;
1155  SDL_bool is_xinput_mapping = SDL_FALSE;
1156  SDL_bool existing = SDL_FALSE;
1157  ControllerMapping_t *pControllerMapping;
1158 
1159  if (!mappingString) {
1160  return SDL_InvalidParamError("mappingString");
1161  }
1162 
1163  pchGUID = SDL_PrivateGetControllerGUIDFromMappingString(mappingString);
1164  if (!pchGUID) {
1165  return SDL_SetError("Couldn't parse GUID from %s", mappingString);
1166  }
1167  if (!SDL_strcasecmp(pchGUID, "default")) {
1168  is_default_mapping = SDL_TRUE;
1169  } else if (!SDL_strcasecmp(pchGUID, "hidapi")) {
1170  is_hidapi_mapping = SDL_TRUE;
1171  } else if (!SDL_strcasecmp(pchGUID, "xinput")) {
1172  is_xinput_mapping = SDL_TRUE;
1173  }
1174  jGUID = SDL_JoystickGetGUIDFromString(pchGUID);
1175  SDL_free(pchGUID);
1176 
1177  pControllerMapping = SDL_PrivateAddMappingForGUID(jGUID, mappingString, &existing, priority);
1178  if (!pControllerMapping) {
1179  return -1;
1180  }
1181 
1182  if (existing) {
1183  return 0;
1184  } else {
1185  if (is_default_mapping) {
1186  s_pDefaultMapping = pControllerMapping;
1187  } else if (is_hidapi_mapping) {
1188  s_pHIDAPIMapping = pControllerMapping;
1189  } else if (is_xinput_mapping) {
1190  s_pXInputMapping = pControllerMapping;
1191  }
1192  return 1;
1193  }
1194 }
1195 
1196 /*
1197  * Add or update an entry into the Mappings Database
1198  */
1199 int
1200 SDL_GameControllerAddMapping(const char *mappingString)
1201 {
1203 }
1204 
1205 /*
1206  * Get the number of mappings installed
1207  */
1208 int
1210 {
1211  int num_mappings = 0;
1213 
1214  for (mapping = s_pSupportedControllers; mapping; mapping = mapping->next) {
1215  if (SDL_memcmp(&mapping->guid, &s_zeroGUID, sizeof(mapping->guid)) == 0) {
1216  continue;
1217  }
1218  ++num_mappings;
1219  }
1220  return num_mappings;
1221 }
1222 
1223 /*
1224  * Get the mapping at a particular index.
1225  */
1226 char *
1228 {
1230 
1231  for (mapping = s_pSupportedControllers; mapping; mapping = mapping->next) {
1232  if (SDL_memcmp(&mapping->guid, &s_zeroGUID, sizeof(mapping->guid)) == 0) {
1233  continue;
1234  }
1235  if (mapping_index == 0) {
1236  char *pMappingString;
1237  char pchGUID[33];
1238  size_t needed;
1239 
1240  SDL_JoystickGetGUIDString(mapping->guid, pchGUID, sizeof(pchGUID));
1241  /* allocate enough memory for GUID + ',' + name + ',' + mapping + \0 */
1242  needed = SDL_strlen(pchGUID) + 1 + SDL_strlen(mapping->name) + 1 + SDL_strlen(mapping->mapping) + 1;
1243  pMappingString = SDL_malloc(needed);
1244  if (!pMappingString) {
1245  SDL_OutOfMemory();
1246  return NULL;
1247  }
1248  SDL_snprintf(pMappingString, needed, "%s,%s,%s", pchGUID, mapping->name, mapping->mapping);
1249  return pMappingString;
1250  }
1251  --mapping_index;
1252  }
1253  return NULL;
1254 }
1255 
1256 /*
1257  * Get the mapping string for this GUID
1258  */
1259 char *
1261 {
1262  char *pMappingString = NULL;
1264  if (mapping) {
1265  char pchGUID[33];
1266  size_t needed;
1267  SDL_JoystickGetGUIDString(guid, pchGUID, sizeof(pchGUID));
1268  /* allocate enough memory for GUID + ',' + name + ',' + mapping + \0 */
1269  needed = SDL_strlen(pchGUID) + 1 + SDL_strlen(mapping->name) + 1 + SDL_strlen(mapping->mapping) + 1;
1270  pMappingString = SDL_malloc(needed);
1271  if (!pMappingString) {
1272  SDL_OutOfMemory();
1273  return NULL;
1274  }
1275  SDL_snprintf(pMappingString, needed, "%s,%s,%s", pchGUID, mapping->name, mapping->mapping);
1276  }
1277  return pMappingString;
1278 }
1279 
1280 /*
1281  * Get the mapping string for this device
1282  */
1283 char *
1284 SDL_GameControllerMapping(SDL_GameController * gamecontroller)
1285 {
1286  if (!gamecontroller) {
1287  return NULL;
1288  }
1289 
1290  return SDL_GameControllerMappingForGUID(gamecontroller->joystick->guid);
1291 }
1292 
1293 static void
1295 {
1296  const char *hint = SDL_GetHint(SDL_HINT_GAMECONTROLLERCONFIG);
1297  if (hint && hint[0]) {
1298  size_t nchHints = SDL_strlen(hint);
1299  char *pUserMappings = SDL_malloc(nchHints + 1);
1300  char *pTempMappings = pUserMappings;
1301  SDL_memcpy(pUserMappings, hint, nchHints);
1302  pUserMappings[nchHints] = '\0';
1303  while (pUserMappings) {
1304  char *pchNewLine = NULL;
1305 
1306  pchNewLine = SDL_strchr(pUserMappings, '\n');
1307  if (pchNewLine)
1308  *pchNewLine = '\0';
1309 
1311 
1312  if (pchNewLine) {
1313  pUserMappings = pchNewLine + 1;
1314  } else {
1315  pUserMappings = NULL;
1316  }
1317  }
1318  SDL_free(pTempMappings);
1319  }
1320 }
1321 
1322 /*
1323  * Fill the given buffer with the expected controller mapping filepath.
1324  * Usually this will just be SDL_HINT_GAMECONTROLLERCONFIG_FILE, but for
1325  * Android, we want to get the internal storage path.
1326  */
1328 {
1329  const char *hint = SDL_GetHint(SDL_HINT_GAMECONTROLLERCONFIG_FILE);
1330  if (hint && *hint) {
1331  return SDL_strlcpy(path, hint, size) < size;
1332  }
1333 
1334 #if defined(__ANDROID__)
1335  return SDL_snprintf(path, size, "%s/controller_map.txt", SDL_AndroidGetInternalStoragePath()) < size;
1336 #else
1337  return SDL_FALSE;
1338 #endif
1339 }
1340 
1341 /*
1342  * Initialize the game controller system, mostly load our DB of controller config mappings
1343  */
1344 int
1346 {
1347  char szControllerMapPath[1024];
1348  int i = 0;
1349  const char *pMappingString = NULL;
1350  pMappingString = s_ControllerMappings[i];
1351  while (pMappingString) {
1353 
1354  i++;
1355  pMappingString = s_ControllerMappings[i];
1356  }
1357 
1358  if (SDL_GetControllerMappingFilePath(szControllerMapPath, sizeof(szControllerMapPath))) {
1359  SDL_GameControllerAddMappingsFromFile(szControllerMapPath);
1360  }
1361 
1362  /* load in any user supplied config */
1364 
1369 
1370  return (0);
1371 }
1372 
1373 int
1375 {
1376  int i;
1377 
1378  /* watch for joy events and fire controller ones if needed */
1380 
1381  /* Send added events for controllers currently attached */
1382  for (i = 0; i < SDL_NumJoysticks(); ++i) {
1383  if (SDL_IsGameController(i)) {
1384  SDL_Event deviceevent;
1385  deviceevent.type = SDL_CONTROLLERDEVICEADDED;
1386  deviceevent.cdevice.which = i;
1387  SDL_PushEvent(&deviceevent);
1388  }
1389  }
1390 
1391  return (0);
1392 }
1393 
1394 
1395 /*
1396  * Get the implementation dependent name of a controller
1397  */
1398 const char *
1400 {
1401  ControllerMapping_t *pSupportedController = SDL_PrivateGetControllerMapping(device_index);
1402  if (pSupportedController) {
1403  if (SDL_strcmp(pSupportedController->name, "*") == 0) {
1404  return SDL_JoystickNameForIndex(device_index);
1405  } else {
1406  return pSupportedController->name;
1407  }
1408  }
1409  return NULL;
1410 }
1411 
1412 
1413 /**
1414  * Get the mapping of a game controller.
1415  * This can be called before any controllers are opened.
1416  * If no mapping can be found, this function returns NULL.
1417  */
1418 char *
1420 {
1421  char *pMappingString = NULL;
1423 
1425  mapping = SDL_PrivateGetControllerMapping(joystick_index);
1426  if (mapping) {
1427  SDL_JoystickGUID guid;
1428  char pchGUID[33];
1429  size_t needed;
1430  guid = SDL_JoystickGetDeviceGUID(joystick_index);
1431  SDL_JoystickGetGUIDString(guid, pchGUID, sizeof(pchGUID));
1432  /* allocate enough memory for GUID + ',' + name + ',' + mapping + \0 */
1433  needed = SDL_strlen(pchGUID) + 1 + SDL_strlen(mapping->name) + 1 + SDL_strlen(mapping->mapping) + 1;
1434  pMappingString = SDL_malloc(needed);
1435  if (!pMappingString) {
1436  SDL_OutOfMemory();
1438  return NULL;
1439  }
1440  SDL_snprintf(pMappingString, needed, "%s,%s,%s", pchGUID, mapping->name, mapping->mapping);
1441  }
1443  return pMappingString;
1444 }
1445 
1446 
1447 /*
1448  * Return 1 if the joystick with this name and GUID is a supported controller
1449  */
1450 SDL_bool
1452 {
1453  ControllerMapping_t *pSupportedController = SDL_PrivateGetControllerMappingForNameAndGUID(name, guid);
1454  if (pSupportedController) {
1455  return SDL_TRUE;
1456  }
1457  return SDL_FALSE;
1458 }
1459 
1460 /*
1461  * Return 1 if the joystick at this device index is a supported controller
1462  */
1463 SDL_bool
1464 SDL_IsGameController(int device_index)
1465 {
1466  ControllerMapping_t *pSupportedController = SDL_PrivateGetControllerMapping(device_index);
1467  if (pSupportedController) {
1468  return SDL_TRUE;
1469  }
1470  return SDL_FALSE;
1471 }
1472 
1473 /*
1474  * Return 1 if the game controller should be ignored by SDL
1475  */
1477 {
1478  int i;
1479  Uint16 vendor;
1480  Uint16 product;
1481  Uint16 version;
1482  Uint32 vidpid;
1483 
1484 #if defined(__LINUX__)
1485  if (name && SDL_strstr(name, "Wireless Controller Motion Sensors")) {
1486  /* Don't treat the PS4 motion controls as a separate game controller */
1487  return SDL_TRUE;
1488  }
1489 #endif
1490 
1491  if (SDL_allowed_controllers.num_entries == 0 &&
1492  SDL_ignored_controllers.num_entries == 0) {
1493  return SDL_FALSE;
1494  }
1495 
1496  SDL_GetJoystickGUIDInfo(guid, &vendor, &product, &version);
1497 
1498  if (SDL_GetHintBoolean("SDL_GAMECONTROLLER_ALLOW_STEAM_VIRTUAL_GAMEPAD", SDL_FALSE)) {
1499  /* We shouldn't ignore Steam's virtual gamepad since it's using the hints to filter out the real controllers so it can remap input for the virtual controller */
1500  SDL_bool bSteamVirtualGamepad = SDL_FALSE;
1501 #if defined(__LINUX__)
1502  bSteamVirtualGamepad = (vendor == 0x28DE && product == 0x11FF);
1503 #elif defined(__MACOSX__)
1504  bSteamVirtualGamepad = (vendor == 0x045E && product == 0x028E && version == 1);
1505 #elif defined(__WIN32__)
1506  /* We can't tell on Windows, but Steam will block others in input hooks */
1507  bSteamVirtualGamepad = SDL_TRUE;
1508 #endif
1509  if (bSteamVirtualGamepad) {
1510  return SDL_FALSE;
1511  }
1512  }
1513 
1514  vidpid = MAKE_VIDPID(vendor, product);
1515 
1516  if (SDL_allowed_controllers.num_entries > 0) {
1517  for (i = 0; i < SDL_allowed_controllers.num_entries; ++i) {
1518  if (vidpid == SDL_allowed_controllers.entries[i]) {
1519  return SDL_FALSE;
1520  }
1521  }
1522  return SDL_TRUE;
1523  } else {
1524  for (i = 0; i < SDL_ignored_controllers.num_entries; ++i) {
1525  if (vidpid == SDL_ignored_controllers.entries[i]) {
1526  return SDL_TRUE;
1527  }
1528  }
1529  return SDL_FALSE;
1530  }
1531 }
1532 
1533 /*
1534  * Open a controller for use - the index passed as an argument refers to
1535  * the N'th controller on the system. This index is the value which will
1536  * identify this controller in future controller events.
1537  *
1538  * This function returns a controller identifier, or NULL if an error occurred.
1539  */
1540 SDL_GameController *
1541 SDL_GameControllerOpen(int device_index)
1542 {
1543  SDL_JoystickID instance_id;
1544  SDL_GameController *gamecontroller;
1545  SDL_GameController *gamecontrollerlist;
1546  ControllerMapping_t *pSupportedController = NULL;
1547 
1549 
1550  gamecontrollerlist = SDL_gamecontrollers;
1551  /* If the controller is already open, return it */
1552  instance_id = SDL_JoystickGetDeviceInstanceID(device_index);
1553  while (gamecontrollerlist) {
1554  if (instance_id == gamecontrollerlist->joystick->instance_id) {
1555  gamecontroller = gamecontrollerlist;
1556  ++gamecontroller->ref_count;
1558  return (gamecontroller);
1559  }
1560  gamecontrollerlist = gamecontrollerlist->next;
1561  }
1562 
1563  /* Find a controller mapping */
1564  pSupportedController = SDL_PrivateGetControllerMapping(device_index);
1565  if (!pSupportedController) {
1566  SDL_SetError("Couldn't find mapping for device (%d)", device_index);
1568  return NULL;
1569  }
1570 
1571  /* Create and initialize the controller */
1572  gamecontroller = (SDL_GameController *) SDL_calloc(1, sizeof(*gamecontroller));
1573  if (gamecontroller == NULL) {
1574  SDL_OutOfMemory();
1576  return NULL;
1577  }
1578 
1579  gamecontroller->joystick = SDL_JoystickOpen(device_index);
1580  if (!gamecontroller->joystick) {
1581  SDL_free(gamecontroller);
1583  return NULL;
1584  }
1585 
1586  if (gamecontroller->joystick->naxes) {
1587  gamecontroller->last_match_axis = (SDL_ExtendedGameControllerBind **)SDL_calloc(gamecontroller->joystick->naxes, sizeof(*gamecontroller->last_match_axis));
1588  if (!gamecontroller->last_match_axis) {
1589  SDL_OutOfMemory();
1590  SDL_JoystickClose(gamecontroller->joystick);
1591  SDL_free(gamecontroller);
1593  return NULL;
1594  }
1595  }
1596  if (gamecontroller->joystick->nhats) {
1597  gamecontroller->last_hat_mask = (Uint8 *)SDL_calloc(gamecontroller->joystick->nhats, sizeof(*gamecontroller->last_hat_mask));
1598  if (!gamecontroller->last_hat_mask) {
1599  SDL_OutOfMemory();
1600  SDL_JoystickClose(gamecontroller->joystick);
1601  SDL_free(gamecontroller->last_match_axis);
1602  SDL_free(gamecontroller);
1604  return NULL;
1605  }
1606  }
1607 
1608  SDL_PrivateLoadButtonMapping(gamecontroller, pSupportedController->name, pSupportedController->mapping);
1609 
1610  /* Add the controller to list */
1611  ++gamecontroller->ref_count;
1612  /* Link the controller in the list */
1613  gamecontroller->next = SDL_gamecontrollers;
1614  SDL_gamecontrollers = gamecontroller;
1615 
1617 
1618  return (gamecontroller);
1619 }
1620 
1621 /*
1622  * Manually pump for controller updates.
1623  */
1624 void
1626 {
1627  /* Just for API completeness; the joystick API does all the work. */
1629 }
1630 
1631 /*
1632  * Get the current state of an axis control on a controller
1633  */
1634 Sint16
1635 SDL_GameControllerGetAxis(SDL_GameController * gamecontroller, SDL_GameControllerAxis axis)
1636 {
1637  int i;
1638 
1639  if (!gamecontroller)
1640  return 0;
1641 
1642  for (i = 0; i < gamecontroller->num_bindings; ++i) {
1643  SDL_ExtendedGameControllerBind *binding = &gamecontroller->bindings[i];
1644  if (binding->outputType == SDL_CONTROLLER_BINDTYPE_AXIS && binding->output.axis.axis == axis) {
1645  int value = 0;
1646  SDL_bool valid_input_range;
1647  SDL_bool valid_output_range;
1648 
1649  if (binding->inputType == SDL_CONTROLLER_BINDTYPE_AXIS) {
1650  value = SDL_JoystickGetAxis(gamecontroller->joystick, binding->input.axis.axis);
1651  if (binding->input.axis.axis_min < binding->input.axis.axis_max) {
1652  valid_input_range = (value >= binding->input.axis.axis_min && value <= binding->input.axis.axis_max);
1653  } else {
1654  valid_input_range = (value >= binding->input.axis.axis_max && value <= binding->input.axis.axis_min);
1655  }
1656  if (valid_input_range) {
1657  if (binding->input.axis.axis_min != binding->output.axis.axis_min || binding->input.axis.axis_max != binding->output.axis.axis_max) {
1658  float normalized_value = (float)(value - binding->input.axis.axis_min) / (binding->input.axis.axis_max - binding->input.axis.axis_min);
1659  value = binding->output.axis.axis_min + (int)(normalized_value * (binding->output.axis.axis_max - binding->output.axis.axis_min));
1660  }
1661  } else {
1662  value = 0;
1663  }
1664  } else if (binding->inputType == SDL_CONTROLLER_BINDTYPE_BUTTON) {
1665  value = SDL_JoystickGetButton(gamecontroller->joystick, binding->input.button);
1666  if (value == SDL_PRESSED) {
1667  value = binding->output.axis.axis_max;
1668  }
1669  } else if (binding->inputType == SDL_CONTROLLER_BINDTYPE_HAT) {
1670  int hat_mask = SDL_JoystickGetHat(gamecontroller->joystick, binding->input.hat.hat);
1671  if (hat_mask & binding->input.hat.hat_mask) {
1672  value = binding->output.axis.axis_max;
1673  }
1674  }
1675 
1676  if (binding->output.axis.axis_min < binding->output.axis.axis_max) {
1677  valid_output_range = (value >= binding->output.axis.axis_min && value <= binding->output.axis.axis_max);
1678  } else {
1679  valid_output_range = (value >= binding->output.axis.axis_max && value <= binding->output.axis.axis_min);
1680  }
1681  /* If the value is zero, there might be another binding that makes it non-zero */
1682  if (value != 0 && valid_output_range) {
1683  return (Sint16)value;
1684  }
1685  }
1686  }
1687  return 0;
1688 }
1689 
1690 /*
1691  * Get the current state of a button on a controller
1692  */
1693 Uint8
1694 SDL_GameControllerGetButton(SDL_GameController * gamecontroller, SDL_GameControllerButton button)
1695 {
1696  int i;
1697 
1698  if (!gamecontroller)
1699  return 0;
1700 
1701  for (i = 0; i < gamecontroller->num_bindings; ++i) {
1702  SDL_ExtendedGameControllerBind *binding = &gamecontroller->bindings[i];
1703  if (binding->outputType == SDL_CONTROLLER_BINDTYPE_BUTTON && binding->output.button == button) {
1704  if (binding->inputType == SDL_CONTROLLER_BINDTYPE_AXIS) {
1705  SDL_bool valid_input_range;
1706 
1707  int value = SDL_JoystickGetAxis(gamecontroller->joystick, binding->input.axis.axis);
1708  int threshold = binding->input.axis.axis_min + (binding->input.axis.axis_max - binding->input.axis.axis_min) / 2;
1709  if (binding->input.axis.axis_min < binding->input.axis.axis_max) {
1710  valid_input_range = (value >= binding->input.axis.axis_min && value <= binding->input.axis.axis_max);
1711  if (valid_input_range) {
1712  return (value >= threshold) ? SDL_PRESSED : SDL_RELEASED;
1713  }
1714  } else {
1715  valid_input_range = (value >= binding->input.axis.axis_max && value <= binding->input.axis.axis_min);
1716  if (valid_input_range) {
1717  return (value <= threshold) ? SDL_PRESSED : SDL_RELEASED;
1718  }
1719  }
1720  } else if (binding->inputType == SDL_CONTROLLER_BINDTYPE_BUTTON) {
1721  return SDL_JoystickGetButton(gamecontroller->joystick, binding->input.button);
1722  } else if (binding->inputType == SDL_CONTROLLER_BINDTYPE_HAT) {
1723  int hat_mask = SDL_JoystickGetHat(gamecontroller->joystick, binding->input.hat.hat);
1724  return (hat_mask & binding->input.hat.hat_mask) ? SDL_PRESSED : SDL_RELEASED;
1725  }
1726  }
1727  }
1728  return SDL_RELEASED;
1729 }
1730 
1731 const char *
1732 SDL_GameControllerName(SDL_GameController * gamecontroller)
1733 {
1734  if (!gamecontroller)
1735  return NULL;
1736 
1737  if (SDL_strcmp(gamecontroller->name, "*") == 0) {
1738  return SDL_JoystickName(SDL_GameControllerGetJoystick(gamecontroller));
1739  } else {
1740  return gamecontroller->name;
1741  }
1742 }
1743 
1744 int
1745 SDL_GameControllerGetPlayerIndex(SDL_GameController *gamecontroller)
1746 {
1748 }
1749 
1750 Uint16
1751 SDL_GameControllerGetVendor(SDL_GameController * gamecontroller)
1752 {
1753  return SDL_JoystickGetVendor(SDL_GameControllerGetJoystick(gamecontroller));
1754 }
1755 
1756 Uint16
1757 SDL_GameControllerGetProduct(SDL_GameController * gamecontroller)
1758 {
1759  return SDL_JoystickGetProduct(SDL_GameControllerGetJoystick(gamecontroller));
1760 }
1761 
1762 Uint16
1763 SDL_GameControllerGetProductVersion(SDL_GameController * gamecontroller)
1764 {
1766 }
1767 
1768 /*
1769  * Return if the controller in question is currently attached to the system,
1770  * \return 0 if not plugged in, 1 if still present.
1771  */
1772 SDL_bool
1773 SDL_GameControllerGetAttached(SDL_GameController * gamecontroller)
1774 {
1775  if (!gamecontroller)
1776  return SDL_FALSE;
1777 
1778  return SDL_JoystickGetAttached(gamecontroller->joystick);
1779 }
1780 
1781 /*
1782  * Get the joystick for this controller
1783  */
1784 SDL_Joystick *SDL_GameControllerGetJoystick(SDL_GameController * gamecontroller)
1785 {
1786  if (!gamecontroller)
1787  return NULL;
1788 
1789  return gamecontroller->joystick;
1790 }
1791 
1792 
1793 /*
1794  * Find the SDL_GameController that owns this instance id
1795  */
1796 SDL_GameController *
1798 {
1799  SDL_GameController *gamecontroller;
1800 
1802  gamecontroller = SDL_gamecontrollers;
1803  while (gamecontroller) {
1804  if (gamecontroller->joystick->instance_id == joyid) {
1806  return gamecontroller;
1807  }
1808  gamecontroller = gamecontroller->next;
1809  }
1811  return NULL;
1812 }
1813 
1814 
1815 /*
1816  * Get the SDL joystick layer binding for this controller axis mapping
1817  */
1819 {
1820  int i;
1822  SDL_zero(bind);
1823 
1824  if (!gamecontroller || axis == SDL_CONTROLLER_AXIS_INVALID)
1825  return bind;
1826 
1827  for (i = 0; i < gamecontroller->num_bindings; ++i) {
1828  SDL_ExtendedGameControllerBind *binding = &gamecontroller->bindings[i];
1829  if (binding->outputType == SDL_CONTROLLER_BINDTYPE_AXIS && binding->output.axis.axis == axis) {
1830  bind.bindType = binding->inputType;
1831  if (binding->inputType == SDL_CONTROLLER_BINDTYPE_AXIS) {
1832  /* FIXME: There might be multiple axes bound now that we have axis ranges... */
1833  bind.value.axis = binding->input.axis.axis;
1834  } else if (binding->inputType == SDL_CONTROLLER_BINDTYPE_BUTTON) {
1835  bind.value.button = binding->input.button;
1836  } else if (binding->inputType == SDL_CONTROLLER_BINDTYPE_HAT) {
1837  bind.value.hat.hat = binding->input.hat.hat;
1838  bind.value.hat.hat_mask = binding->input.hat.hat_mask;
1839  }
1840  break;
1841  }
1842  }
1843  return bind;
1844 }
1845 
1846 
1847 /*
1848  * Get the SDL joystick layer binding for this controller button mapping
1849  */
1851 {
1852  int i;
1854  SDL_zero(bind);
1855 
1856  if (!gamecontroller || button == SDL_CONTROLLER_BUTTON_INVALID)
1857  return bind;
1858 
1859  for (i = 0; i < gamecontroller->num_bindings; ++i) {
1860  SDL_ExtendedGameControllerBind *binding = &gamecontroller->bindings[i];
1861  if (binding->outputType == SDL_CONTROLLER_BINDTYPE_BUTTON && binding->output.button == button) {
1862  bind.bindType = binding->inputType;
1863  if (binding->inputType == SDL_CONTROLLER_BINDTYPE_AXIS) {
1864  bind.value.axis = binding->input.axis.axis;
1865  } else if (binding->inputType == SDL_CONTROLLER_BINDTYPE_BUTTON) {
1866  bind.value.button = binding->input.button;
1867  } else if (binding->inputType == SDL_CONTROLLER_BINDTYPE_HAT) {
1868  bind.value.hat.hat = binding->input.hat.hat;
1869  bind.value.hat.hat_mask = binding->input.hat.hat_mask;
1870  }
1871  break;
1872  }
1873  }
1874  return bind;
1875 }
1876 
1877 
1878 int
1879 SDL_GameControllerRumble(SDL_GameController *gamecontroller, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble, Uint32 duration_ms)
1880 {
1881  return SDL_JoystickRumble(SDL_GameControllerGetJoystick(gamecontroller), low_frequency_rumble, high_frequency_rumble, duration_ms);
1882 }
1883 
1884 void
1885 SDL_GameControllerClose(SDL_GameController * gamecontroller)
1886 {
1887  SDL_GameController *gamecontrollerlist, *gamecontrollerlistprev;
1888 
1889  if (!gamecontroller)
1890  return;
1891 
1893 
1894  /* First decrement ref count */
1895  if (--gamecontroller->ref_count > 0) {
1897  return;
1898  }
1899 
1900  SDL_JoystickClose(gamecontroller->joystick);
1901 
1902  gamecontrollerlist = SDL_gamecontrollers;
1903  gamecontrollerlistprev = NULL;
1904  while (gamecontrollerlist) {
1905  if (gamecontroller == gamecontrollerlist) {
1906  if (gamecontrollerlistprev) {
1907  /* unlink this entry */
1908  gamecontrollerlistprev->next = gamecontrollerlist->next;
1909  } else {
1910  SDL_gamecontrollers = gamecontroller->next;
1911  }
1912  break;
1913  }
1914  gamecontrollerlistprev = gamecontrollerlist;
1915  gamecontrollerlist = gamecontrollerlist->next;
1916  }
1917 
1918  SDL_free(gamecontroller->bindings);
1919  SDL_free(gamecontroller->last_match_axis);
1920  SDL_free(gamecontroller->last_hat_mask);
1921  SDL_free(gamecontroller);
1922 
1924 }
1925 
1926 
1927 /*
1928  * Quit the controller subsystem
1929  */
1930 void
1932 {
1934  while (SDL_gamecontrollers) {
1935  SDL_gamecontrollers->ref_count = 1;
1937  }
1939 }
1940 
1941 void
1943 {
1944  ControllerMapping_t *pControllerMap;
1945 
1946  while (s_pSupportedControllers) {
1947  pControllerMap = s_pSupportedControllers;
1948  s_pSupportedControllers = s_pSupportedControllers->next;
1949  SDL_free(pControllerMap->name);
1950  SDL_free(pControllerMap->mapping);
1951  SDL_free(pControllerMap);
1952  }
1953 
1955 
1960 
1961  if (SDL_allowed_controllers.entries) {
1962  SDL_free(SDL_allowed_controllers.entries);
1963  SDL_zero(SDL_allowed_controllers);
1964  }
1965  if (SDL_ignored_controllers.entries) {
1966  SDL_free(SDL_ignored_controllers.entries);
1967  SDL_zero(SDL_ignored_controllers);
1968  }
1969 }
1970 
1971 /*
1972  * Event filter to transform joystick events into appropriate game controller ones
1973  */
1974 static int
1976 {
1977  int posted;
1978 
1979  /* translate the event, if desired */
1980  posted = 0;
1981 #if !SDL_EVENTS_DISABLED
1983  SDL_Event event;
1984  event.type = SDL_CONTROLLERAXISMOTION;
1985  event.caxis.which = gamecontroller->joystick->instance_id;
1986  event.caxis.axis = axis;
1987  event.caxis.value = value;
1988  posted = SDL_PushEvent(&event) == 1;
1989  }
1990 #endif /* !SDL_EVENTS_DISABLED */
1991  return (posted);
1992 }
1993 
1994 
1995 /*
1996  * Event filter to transform joystick events into appropriate game controller ones
1997  */
1998 static int
2000 {
2001  int posted;
2002 #if !SDL_EVENTS_DISABLED
2003  SDL_Event event;
2004 
2005  if (button == SDL_CONTROLLER_BUTTON_INVALID)
2006  return (0);
2007 
2008  switch (state) {
2009  case SDL_PRESSED:
2010  event.type = SDL_CONTROLLERBUTTONDOWN;
2011  break;
2012  case SDL_RELEASED:
2013  event.type = SDL_CONTROLLERBUTTONUP;
2014  break;
2015  default:
2016  /* Invalid state -- bail */
2017  return (0);
2018  }
2019 #endif /* !SDL_EVENTS_DISABLED */
2020 
2021  if (button == SDL_CONTROLLER_BUTTON_GUIDE) {
2022  Uint32 now = SDL_GetTicks();
2023  if (state == SDL_PRESSED) {
2024  gamecontroller->guide_button_down = now;
2025 
2026  if (gamecontroller->joystick->delayed_guide_button) {
2027  /* Skip duplicate press */
2028  return (0);
2029  }
2030  } else {
2031  if (!SDL_TICKS_PASSED(now, gamecontroller->guide_button_down+SDL_MINIMUM_GUIDE_BUTTON_DELAY_MS) && !gamecontroller->joystick->force_recentering) {
2032  gamecontroller->joystick->delayed_guide_button = SDL_TRUE;
2033  return (0);
2034  }
2035  gamecontroller->joystick->delayed_guide_button = SDL_FALSE;
2036  }
2037  }
2038 
2039  /* translate the event, if desired */
2040  posted = 0;
2041 #if !SDL_EVENTS_DISABLED
2042  if (SDL_GetEventState(event.type) == SDL_ENABLE) {
2043  event.cbutton.which = gamecontroller->joystick->instance_id;
2044  event.cbutton.button = button;
2045  event.cbutton.state = state;
2046  posted = SDL_PushEvent(&event) == 1;
2047  }
2048 #endif /* !SDL_EVENTS_DISABLED */
2049  return (posted);
2050 }
2051 
2052 /*
2053  * Turn off controller events
2054  */
2055 int
2057 {
2058 #if SDL_EVENTS_DISABLED
2059  return SDL_IGNORE;
2060 #else
2061  const Uint32 event_list[] = {
2064  };
2065  unsigned int i;
2066 
2067  switch (state) {
2068  case SDL_QUERY:
2069  state = SDL_IGNORE;
2070  for (i = 0; i < SDL_arraysize(event_list); ++i) {
2071  state = SDL_EventState(event_list[i], SDL_QUERY);
2072  if (state == SDL_ENABLE) {
2073  break;
2074  }
2075  }
2076  break;
2077  default:
2078  for (i = 0; i < SDL_arraysize(event_list); ++i) {
2079  SDL_EventState(event_list[i], state);
2080  }
2081  break;
2082  }
2083  return (state);
2084 #endif /* SDL_EVENTS_DISABLED */
2085 }
2086 
2087 void
2089 {
2090  SDL_GameController *controllerlist = SDL_gamecontrollers;
2091  while (controllerlist) {
2092  if (controllerlist->joystick == joystick) {
2094  break;
2095  }
2096  controllerlist = controllerlist->next;
2097  }
2098 }
2099 
2100 /* vi: set ts=4 sw=4 expandtab: */
static const char * map_StringForControllerAxis[]
#define SDL_strlcpy
char * SDL_GameControllerMapping(SDL_GameController *gamecontroller)
SDL_JoystickID which
Definition: SDL_events.h:356
#define SDL_DelEventWatch
Uint16 SDL_GameControllerGetProduct(SDL_GameController *gamecontroller)
SDL_GameControllerBindType
#define SDL_CONTROLLER_PLATFORM_FIELD
int SDL_GameControllerGetPlayerIndex(SDL_GameController *gamecontroller)
#define SDL_JoystickGetButton
SDL_GameControllerButton SDL_GameControllerGetButtonFromString(const char *pchString)
SDL_JoyDeviceEvent jdevice
Definition: SDL_events.h:573
#define SDL_UnlockJoysticks
#define SDL_JoystickClose
#define MAKE_VIDPID(VID, PID)
SDL_Texture * button
static int SDL_GameControllerEventWatcher(void *userdata, SDL_Event *event)
#define SDL_strlcat
union SDL_ExtendedGameControllerBind::@24 input
static void HandleJoystickHat(SDL_GameController *gamecontroller, int hat, Uint8 value)
#define SDL_JoystickGetVendor
void SDL_GameControllerQuitMappings(void)
SDL_ControllerDeviceEvent cdevice
Definition: SDL_events.h:576
int SDL_GameControllerInitMappings(void)
SDL_GameControllerButtonBind SDL_GameControllerGetBindForButton(SDL_GameController *gamecontroller, SDL_GameControllerButton button)
SDL_ControllerMappingPriority priority
SDL_JoyButtonEvent jbutton
Definition: SDL_events.h:572
struct _ControllerMapping_t * next
static void ResetOutput(SDL_GameController *gamecontroller, SDL_ExtendedGameControllerBind *bind)
static SDL_bool SDL_GetControllerMappingFilePath(char *path, size_t size)
static void UpdateEventsForDeviceRemoval()
char * SDL_GameControllerMappingForIndex(int mapping_index)
Uint16 SDL_GameControllerGetVendor(SDL_GameController *gamecontroller)
Sint16 SDL_GameControllerGetAxis(SDL_GameController *gamecontroller, SDL_GameControllerAxis axis)
SDL_GameControllerAxis SDL_GameControllerGetAxisFromString(const char *pchString)
#define SDL_JoystickNameForIndex
struct xkb_state * state
static SDL_vidpid_list SDL_ignored_controllers
static SDL_Event events[EVENT_BUF_SIZE]
Definition: testgesture.c:39
SDL_JoystickID which
Definition: SDL_events.h:304
SDL_GameControllerBindType inputType
#define SDL_GetHint
static ControllerMapping_t * s_pDefaultMapping
#define SDL_RWread
static ControllerMapping_t * SDL_PrivateGetControllerMappingForNameAndGUID(const char *name, SDL_JoystickGUID guid)
uint16_t Uint16
Definition: SDL_stdinc.h:191
#define SDL_ENABLE
Definition: SDL_events.h:759
#define SDL_JoystickOpen
void SDL_GameControllerHandleDelayedGuideButton(SDL_Joystick *joystick)
union SDL_ExtendedGameControllerBind::@25 output
#define SDL_NumJoysticks
SDL_Texture * axis
#define SDL_InvalidParamError(param)
Definition: SDL_error.h:54
SDL_GameControllerButton
#define SDL_realloc
#define SDL_strcasecmp
static void SDL_GameControllerLoadHints()
Uint8 data[16]
Definition: SDL_joystick.h:71
SDL_ExtendedGameControllerBind * bindings
#define SDL_strncasecmp
#define SDL_JoystickGetGUIDString
#define SDL_JoystickGetProduct
#define SDL_JoystickGetHat
GLuint const GLchar * name
#define SDL_HINT_GAMECONTROLLERCONFIG_FILE
A variable that lets you provide a file with extra gamecontroller db entries.
Definition: SDL_hints.h:457
struct _SDL_GameController * next
#define SDL_JoystickName
#define SDL_JoystickGetDeviceGUID
SDL_GameController * SDL_GameControllerFromInstanceID(SDL_JoystickID joyid)
#define SDL_strchr
#define SDL_GetHintBoolean
#define SDL_small_alloc(type, count, pisstack)
Definition: SDL_internal.h:39
static int SDL_PrivateGameControllerAddMapping(const char *mappingString, SDL_ControllerMappingPriority priority)
#define SDL_JOYSTICK_AXIS_MIN
Definition: SDL_joystick.h:302
#define SDL_JoystickGetPlayerIndex
void SDL_GameControllerClose(SDL_GameController *gamecontroller)
#define SDL_memcpy
#define SDL_JOYSTICK_AXIS_MAX
Definition: SDL_joystick.h:301
GLenum GLenum GLenum input
#define SDL_GetEventState(type)
Definition: SDL_events.h:772
Sint32 SDL_JoystickID
Definition: SDL_joystick.h:81
SDL_JoystickGUID guid
#define SDL_JoystickGetDeviceInstanceID
#define SDL_isdigit
#define SDL_PeepEvents
Uint32 SDL_GetTicks(void)
Get the number of milliseconds since the SDL library initialization.
static SDL_GameController * SDL_gamecontrollers
static ControllerMapping_t * s_pSupportedControllers
int SDL_GameControllerEventState(int state)
SDL_JoyAxisEvent jaxis
Definition: SDL_events.h:569
void SDL_GameControllerQuit(void)
uint8_t Uint8
Definition: SDL_stdinc.h:179
#define SDL_free
int SDL_GameControllerAddMapping(const char *mappingString)
struct _cl_event * event
const char * SDL_GameControllerGetStringForAxis(SDL_GameControllerAxis axis)
static ControllerMapping_t * SDL_PrivateGetControllerMappingForGUID(SDL_JoystickGUID *guid, SDL_bool exact_match)
unsigned int size_t
SDL_GameControllerBindType bindType
const char * SDL_GameControllerName(SDL_GameController *gamecontroller)
static void SDL_PrivateGameControllerParseControllerConfigString(SDL_GameController *gamecontroller, const char *pchString)
#define SDL_PushEvent
GLenum GLint GLuint mask
#define SDL_memcmp
SDL_GameControllerBindType outputType
SDL_ExtendedGameControllerBind ** last_match_axis
static ControllerMapping_t * s_pHIDAPIMapping
static SDL_bool HasSameOutput(SDL_ExtendedGameControllerBind *a, SDL_ExtendedGameControllerBind *b)
Uint16 SDL_GameControllerGetProductVersion(SDL_GameController *gamecontroller)
SDL_bool SDL_ShouldIgnoreGameController(const char *name, SDL_JoystickGUID guid)
SDL_bool SDL_IsJoystickXInput(SDL_JoystickGUID guid)
GLsizei const GLfloat * value
#define SDL_HINT_GAMECONTROLLER_IGNORE_DEVICES_EXCEPT
Definition: SDL_hints.h:483
SDL_ControllerMappingPriority
static int SDL_PrivateGameControllerButton(SDL_GameController *gamecontroller, SDL_GameControllerButton button, Uint8 state)
#define SDL_JoystickGetAttached
#define SDL_strtol
#define SDL_zero(x)
Definition: SDL_stdinc.h:416
#define SDL_GetPlatform
#define SDL_RWsize
SDL_bool SDL_IsJoystickHIDAPI(SDL_JoystickGUID guid)
#define SDL_JoystickRumble
static const char * map_StringForControllerButton[]
int SDL_GameControllerRumble(SDL_GameController *gamecontroller, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble, Uint32 duration_ms)
void SDL_GameControllerUpdate(void)
GLenum GLuint GLenum GLsizei const GLchar * buf
static ControllerMapping_t * SDL_PrivateGetControllerMapping(int device_index)
#define SDL_atoi
GLsizeiptr size
static char * SDL_PrivateGetControllerMappingFromMappingString(const char *pMapping)
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
SDL_bool SDL_IsGameControllerNameAndGUID(const char *name, SDL_JoystickGUID guid)
static void SDL_PrivateGameControllerParseElement(SDL_GameController *gamecontroller, const char *szGameButton, const char *szJoystickButton)
SDL_GameController * SDL_GameControllerOpen(int device_index)
static char * SDL_PrivateGetControllerGUIDFromMappingString(const char *pMapping)
static void HandleJoystickButton(SDL_GameController *gamecontroller, int button, Uint8 state)
static void SDL_PrivateGameControllerRefreshMapping(ControllerMapping_t *pControllerMapping)
SDL_bool SDL_IsGameController(int device_index)
#define NULL
Definition: begin_code.h:167
#define SDL_OutOfMemory()
Definition: SDL_error.h:52
SDL_bool
Definition: SDL_stdinc.h:161
static char * SDL_PrivateGetControllerNameFromMappingString(const char *pMapping)
static void SDL_GameControllerIgnoreDevicesExceptChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
static const char * s_ControllerMappings[]
#define SDL_JoystickUpdate
static SDL_JoystickGUID s_zeroGUID
#define SDL_SetError
SDL_GameControllerButtonBind SDL_GameControllerGetBindForAxis(SDL_GameController *gamecontroller, SDL_GameControllerAxis axis)
static SDL_vidpid_list SDL_allowed_controllers
#define SDL_JoystickGetAxis
#define SDL_calloc
static void SDL_PrivateLoadButtonMapping(SDL_GameController *gamecontroller, const char *pchName, const char *pchMapping)
void SDL_GetJoystickGUIDInfo(SDL_JoystickGUID guid, Uint16 *vendor, Uint16 *product, Uint16 *version)
union SDL_GameControllerButtonBind::@0 value
#define SDL_AddEventWatch
#define SDL_strlen
#define SDL_strdup
SDL_Joystick * SDL_GameControllerGetJoystick(SDL_GameController *gamecontroller)
#define SDL_EventState
uint32_t Uint32
Definition: SDL_stdinc.h:203
#define SDL_AddHintCallback
#define SDL_small_free(ptr, isstack)
Definition: SDL_internal.h:40
static ControllerMapping_t * s_pXInputMapping
#define SDL_DelHintCallback
#define SDL_RWclose
int SDL_GameControllerNumMappings(void)
#define SDL_snprintf
#define SDL_arraysize(array)
Definition: SDL_stdinc.h:115
GLenum GLenum GLenum GLenum mapping
#define SDL_HINT_GAMECONTROLLERCONFIG
A variable that lets you manually hint extra gamecontroller db entries.
Definition: SDL_hints.h:447
General event structure.
Definition: SDL_events.h:557
#define SDL_malloc
GLsizei const GLchar *const * path
#define SDL_MINIMUM_GUIDE_BUTTON_DELAY_MS
SDL_GameControllerButton button
#define SDL_GameControllerAddMappingsFromFile(file)
#define SDL_strcmp
#define SDL_PRESSED
Definition: SDL_events.h:50
#define SDL_QUERY
Definition: SDL_events.h:756
SDL_JoyHatEvent jhat
Definition: SDL_events.h:571
#define SDL_JoystickGetProductVersion
GLboolean GLboolean GLboolean GLboolean a
static void SDL_LoadVIDPIDListFromHint(const char *hint, SDL_vidpid_list *list)
int SDL_GameControllerAddMappingsFromRW(SDL_RWops *rw, int freerw)
int SDL_GameControllerInit(void)
#define SDL_SwapLE16(X)
Definition: SDL_endian.h:232
#define SDL_TICKS_PASSED(A, B)
Compare SDL ticks values, and return true if A has passed B.
Definition: SDL_timer.h:56
#define SDL_RELEASED
Definition: SDL_events.h:49
const char * SDL_GameControllerGetStringForButton(SDL_GameControllerButton axis)
char * SDL_GameControllerMappingForGUID(SDL_JoystickGUID guid)
#define SDL_LockJoysticks
static ControllerMapping_t * SDL_PrivateAddMappingForGUID(SDL_JoystickGUID jGUID, const char *mappingString, SDL_bool *existing, SDL_ControllerMappingPriority priority)
#define SDLCALL
Definition: SDL_internal.h:49
Uint8 SDL_GameControllerGetButton(SDL_GameController *gamecontroller, SDL_GameControllerButton button)
GLboolean GLboolean GLboolean b
#define SDL_HINT_GAMECONTROLLER_IGNORE_DEVICES
Definition: SDL_hints.h:470
#define SDL_AndroidGetInternalStoragePath
SDL_JoystickID which
Definition: SDL_events.h:336
SDL_GameControllerAxis
char * SDL_GameControllerMappingForDeviceIndex(int joystick_index)
static int SDL_PrivateGameControllerAxis(SDL_GameController *gamecontroller, SDL_GameControllerAxis axis, Sint16 value)
static void HandleJoystickAxis(SDL_GameController *gamecontroller, int axis, int value)
#define SDL_memset
SDL_bool SDL_GameControllerGetAttached(SDL_GameController *gamecontroller)
#define SDL_JoystickGetGUIDFromString
static void SDL_GameControllerIgnoreDevicesChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
int16_t Sint16
Definition: SDL_stdinc.h:185
#define SDL_strstr
Uint32 type
Definition: SDL_events.h:559
#define SDL_IGNORE
Definition: SDL_events.h:757
const char * SDL_GameControllerNameForIndex(int device_index)
#define SDL_LoadFile