SDL  2.0
SDL_joystick.c File Reference
#include "../SDL_internal.h"
#include "SDL.h"
#include "SDL_atomic.h"
#include "SDL_events.h"
#include "SDL_sysjoystick.h"
#include "SDL_assert.h"
#include "SDL_hints.h"
#include "../events/SDL_events_c.h"
#include "../video/SDL_sysvideo.h"
#include "controller_type.h"
#include "../core/windows/SDL_windows.h"
#include <tlhelp32.h>
+ Include dependency graph for SDL_joystick.c:

Go to the source code of this file.

Functions

void SDL_LockJoysticks (void)
 
void SDL_UnlockJoysticks (void)
 
static void SDL_JoystickAllowBackgroundEventsChanged (void *userdata, const char *name, const char *oldValue, const char *hint)
 
int SDL_JoystickInit (void)
 
int SDL_NumJoysticks (void)
 
SDL_JoystickID SDL_GetNextJoystickInstanceID ()
 
SDL_bool SDL_GetDriverAndJoystickIndex (int device_index, SDL_JoystickDriver **driver, int *driver_index)
 
static const char * SDL_FixupJoystickName (const char *name)
 
const char * SDL_JoystickNameForIndex (int device_index)
 
int SDL_JoystickGetDevicePlayerIndex (int device_index)
 
static SDL_bool SDL_JoystickAxesCenteredAtZero (SDL_Joystick *joystick)
 
SDL_Joystick * SDL_JoystickOpen (int device_index)
 
int SDL_PrivateJoystickValid (SDL_Joystick *joystick)
 
int SDL_JoystickNumAxes (SDL_Joystick *joystick)
 
int SDL_JoystickNumHats (SDL_Joystick *joystick)
 
int SDL_JoystickNumBalls (SDL_Joystick *joystick)
 
int SDL_JoystickNumButtons (SDL_Joystick *joystick)
 
Sint16 SDL_JoystickGetAxis (SDL_Joystick *joystick, int axis)
 
SDL_bool SDL_JoystickGetAxisInitialState (SDL_Joystick *joystick, int axis, Sint16 *state)
 
Uint8 SDL_JoystickGetHat (SDL_Joystick *joystick, int hat)
 
int SDL_JoystickGetBall (SDL_Joystick *joystick, int ball, int *dx, int *dy)
 
Uint8 SDL_JoystickGetButton (SDL_Joystick *joystick, int button)
 
SDL_bool SDL_JoystickGetAttached (SDL_Joystick *joystick)
 
SDL_JoystickID SDL_JoystickInstanceID (SDL_Joystick *joystick)
 
SDL_Joystick * SDL_JoystickFromInstanceID (SDL_JoystickID joyid)
 
const char * SDL_JoystickName (SDL_Joystick *joystick)
 
int SDL_JoystickGetPlayerIndex (SDL_Joystick *joystick)
 
int SDL_JoystickRumble (SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble, Uint32 duration_ms)
 
void SDL_JoystickClose (SDL_Joystick *joystick)
 
void SDL_JoystickQuit (void)
 
static SDL_bool SDL_PrivateJoystickShouldIgnoreEvent ()
 
void SDL_PrivateJoystickAdded (SDL_JoystickID device_instance)
 
static void UpdateEventsForDeviceRemoval ()
 
void SDL_PrivateJoystickRemoved (SDL_JoystickID device_instance)
 
int SDL_PrivateJoystickAxis (SDL_Joystick *joystick, Uint8 axis, Sint16 value)
 
int SDL_PrivateJoystickHat (SDL_Joystick *joystick, Uint8 hat, Uint8 value)
 
int SDL_PrivateJoystickBall (SDL_Joystick *joystick, Uint8 ball, Sint16 xrel, Sint16 yrel)
 
int SDL_PrivateJoystickButton (SDL_Joystick *joystick, Uint8 button, Uint8 state)
 
void SDL_JoystickUpdate (void)
 
int SDL_JoystickEventState (int state)
 
void SDL_GetJoystickGUIDInfo (SDL_JoystickGUID guid, Uint16 *vendor, Uint16 *product, Uint16 *version)
 
SDL_bool SDL_IsJoystickPS4 (Uint16 vendor, Uint16 product)
 
SDL_bool SDL_IsJoystickNintendoSwitchPro (Uint16 vendor, Uint16 product)
 
SDL_bool SDL_IsJoystickSteamController (Uint16 vendor, Uint16 product)
 
SDL_bool SDL_IsJoystickXbox360 (Uint16 vendor, Uint16 product)
 
SDL_bool SDL_IsJoystickXboxOne (Uint16 vendor, Uint16 product)
 
SDL_bool SDL_IsJoystickXInput (SDL_JoystickGUID guid)
 
SDL_bool SDL_IsJoystickHIDAPI (SDL_JoystickGUID guid)
 
static SDL_bool SDL_IsJoystickProductWheel (Uint32 vidpid)
 
static SDL_bool SDL_IsJoystickProductFlightStick (Uint32 vidpid)
 
static SDL_bool SDL_IsJoystickProductThrottle (Uint32 vidpid)
 
static SDL_JoystickType SDL_GetJoystickGUIDType (SDL_JoystickGUID guid)
 
static SDL_bool SDL_IsPS4RemapperRunning (void)
 
SDL_bool SDL_ShouldIgnoreJoystick (const char *name, SDL_JoystickGUID guid)
 
SDL_JoystickGUID SDL_JoystickGetDeviceGUID (int device_index)
 
Uint16 SDL_JoystickGetDeviceVendor (int device_index)
 
Uint16 SDL_JoystickGetDeviceProduct (int device_index)
 
Uint16 SDL_JoystickGetDeviceProductVersion (int device_index)
 
SDL_JoystickType SDL_JoystickGetDeviceType (int device_index)
 
SDL_JoystickID SDL_JoystickGetDeviceInstanceID (int device_index)
 
int SDL_JoystickGetDeviceIndexFromInstanceID (SDL_JoystickID instance_id)
 
SDL_JoystickGUID SDL_JoystickGetGUID (SDL_Joystick *joystick)
 
Uint16 SDL_JoystickGetVendor (SDL_Joystick *joystick)
 
Uint16 SDL_JoystickGetProduct (SDL_Joystick *joystick)
 
Uint16 SDL_JoystickGetProductVersion (SDL_Joystick *joystick)
 
SDL_JoystickType SDL_JoystickGetType (SDL_Joystick *joystick)
 
void SDL_JoystickGetGUIDString (SDL_JoystickGUID guid, char *pszGUID, int cbGUID)
 
static unsigned char nibble (char c)
 
SDL_JoystickGUID SDL_JoystickGetGUIDFromString (const char *pchGUID)
 
void SDL_PrivateJoystickBatteryLevel (SDL_Joystick *joystick, SDL_JoystickPowerLevel ePowerLevel)
 
SDL_JoystickPowerLevel SDL_JoystickCurrentPowerLevel (SDL_Joystick *joystick)
 

Variables

static SDL_JoystickDriverSDL_joystick_drivers []
 
static SDL_bool SDL_joystick_allows_background_events = SDL_FALSE
 
static SDL_Joystick * SDL_joysticks = NULL
 
static SDL_bool SDL_updating_joystick = SDL_FALSE
 
static SDL_mutexSDL_joystick_lock = NULL
 
static SDL_atomic_t SDL_next_joystick_instance_id
 

Function Documentation

◆ nibble()

static unsigned char nibble ( char  c)
static

Definition at line 1528 of file SDL_joystick.c.

1529 {
1530  if ((c >= '0') && (c <= '9')) {
1531  return (unsigned char)(c - '0');
1532  }
1533 
1534  if ((c >= 'A') && (c <= 'F')) {
1535  return (unsigned char)(c - 'A' + 0x0a);
1536  }
1537 
1538  if ((c >= 'a') && (c <= 'f')) {
1539  return (unsigned char)(c - 'a' + 0x0a);
1540  }
1541 
1542  /* received an invalid character, and no real way to return an error */
1543  /* AssertMsg1(false, "Q_nibble invalid hex character '%c' ", c); */
1544  return 0;
1545 }

Referenced by SDL_JoystickGetGUIDFromString().

◆ SDL_FixupJoystickName()

static const char* SDL_FixupJoystickName ( const char *  name)
static

Definition at line 198 of file SDL_joystick.c.

199 {
200  if (name) {
201  const char *skip_prefix = "NVIDIA Corporation ";
202 
203  if (SDL_strncmp(name, skip_prefix, SDL_strlen(skip_prefix)) == 0) {
204  name += SDL_strlen(skip_prefix);
205  }
206  }
207  return name;
208 }

References SDL_strlen, and SDL_strncmp.

Referenced by SDL_JoystickName(), and SDL_JoystickNameForIndex().

◆ SDL_GetDriverAndJoystickIndex()

SDL_bool SDL_GetDriverAndJoystickIndex ( int  device_index,
SDL_JoystickDriver **  driver,
int *  driver_index 
)

Definition at line 173 of file SDL_joystick.c.

174 {
175  int i, num_joysticks, total_joysticks = 0;
176 
177  if (device_index >= 0) {
178  for (i = 0; i < SDL_arraysize(SDL_joystick_drivers); ++i) {
179  num_joysticks = SDL_joystick_drivers[i]->GetCount();
180  if (device_index < num_joysticks) {
181  *driver = SDL_joystick_drivers[i];
182  *driver_index = device_index;
183  return SDL_TRUE;
184  }
185  device_index -= num_joysticks;
186  total_joysticks += num_joysticks;
187  }
188  }
189 
190  SDL_SetError("There are %d joysticks available", total_joysticks);
191  return SDL_FALSE;
192 }

References SDL_JoystickDriver::GetCount, i, SDL_arraysize, SDL_FALSE, SDL_joystick_drivers, SDL_SetError, and SDL_TRUE.

Referenced by SDL_JoystickGetDeviceGUID(), SDL_JoystickGetDeviceInstanceID(), SDL_JoystickGetDevicePlayerIndex(), SDL_JoystickNameForIndex(), and SDL_JoystickOpen().

◆ SDL_GetJoystickGUIDInfo()

void SDL_GetJoystickGUIDInfo ( SDL_JoystickGUID  guid,
Uint16 vendor,
Uint16 product,
Uint16 version 
)

Definition at line 1113 of file SDL_joystick.c.

1114 {
1115  Uint16 *guid16 = (Uint16 *)guid.data;
1116 
1117  /* If the GUID fits the form of BUS 0000 VENDOR 0000 PRODUCT 0000, return the data */
1118  if (/* guid16[0] is device bus type */
1119  guid16[1] == 0x0000 &&
1120  /* guid16[2] is vendor ID */
1121  guid16[3] == 0x0000 &&
1122  /* guid16[4] is product ID */
1123  guid16[5] == 0x0000
1124  /* guid16[6] is product version */
1125  ) {
1126  if (vendor) {
1127  *vendor = guid16[2];
1128  }
1129  if (product) {
1130  *product = guid16[4];
1131  }
1132  if (version) {
1133  *version = guid16[6];
1134  }
1135  } else {
1136  if (vendor) {
1137  *vendor = 0;
1138  }
1139  if (product) {
1140  *product = 0;
1141  }
1142  if (version) {
1143  *version = 0;
1144  }
1145  }
1146 }

References SDL_JoystickGUID::data.

Referenced by SDL_GetJoystickGUIDType(), SDL_JoystickGetDeviceProduct(), SDL_JoystickGetDeviceProductVersion(), SDL_JoystickGetDeviceVendor(), SDL_JoystickGetProduct(), SDL_JoystickGetProductVersion(), SDL_JoystickGetVendor(), SDL_ShouldIgnoreGameController(), and SDL_ShouldIgnoreJoystick().

◆ SDL_GetJoystickGUIDType()

static SDL_JoystickType SDL_GetJoystickGUIDType ( SDL_JoystickGUID  guid)
static

Definition at line 1256 of file SDL_joystick.c.

1257 {
1258  Uint16 vendor;
1259  Uint16 product;
1260  Uint32 vidpid;
1261 
1262  if (SDL_IsJoystickXInput(guid)) {
1263  /* XInput GUID, get the type based on the XInput device subtype */
1264  switch (guid.data[15]) {
1265  case 0x01: /* XINPUT_DEVSUBTYPE_GAMEPAD */
1267  case 0x02: /* XINPUT_DEVSUBTYPE_WHEEL */
1268  return SDL_JOYSTICK_TYPE_WHEEL;
1269  case 0x03: /* XINPUT_DEVSUBTYPE_ARCADE_STICK */
1271  case 0x04: /* XINPUT_DEVSUBTYPE_FLIGHT_STICK */
1273  case 0x05: /* XINPUT_DEVSUBTYPE_DANCE_PAD */
1275  case 0x06: /* XINPUT_DEVSUBTYPE_GUITAR */
1276  case 0x07: /* XINPUT_DEVSUBTYPE_GUITAR_ALTERNATE */
1277  case 0x0B: /* XINPUT_DEVSUBTYPE_GUITAR_BASS */
1278  return SDL_JOYSTICK_TYPE_GUITAR;
1279  case 0x08: /* XINPUT_DEVSUBTYPE_DRUM_KIT */
1281  case 0x13: /* XINPUT_DEVSUBTYPE_ARCADE_PAD */
1283  default:
1285  }
1286  }
1287 
1288  SDL_GetJoystickGUIDInfo(guid, &vendor, &product, NULL);
1289  vidpid = MAKE_VIDPID(vendor, product);
1290 
1291  if (SDL_IsJoystickProductWheel(vidpid)) {
1292  return SDL_JOYSTICK_TYPE_WHEEL;
1293  }
1294 
1295  if (SDL_IsJoystickProductFlightStick(vidpid)) {
1297  }
1298 
1299  if (SDL_IsJoystickProductThrottle(vidpid)) {
1301  }
1302 
1305  }
1306 
1308 }

References SDL_JoystickGUID::data, GuessControllerType(), k_eControllerType_UnknownNonSteamController, MAKE_VIDPID, NULL, SDL_GetJoystickGUIDInfo(), SDL_IsJoystickProductFlightStick(), SDL_IsJoystickProductThrottle(), SDL_IsJoystickProductWheel(), SDL_IsJoystickXInput(), SDL_JOYSTICK_TYPE_ARCADE_PAD, SDL_JOYSTICK_TYPE_ARCADE_STICK, SDL_JOYSTICK_TYPE_DANCE_PAD, SDL_JOYSTICK_TYPE_DRUM_KIT, SDL_JOYSTICK_TYPE_FLIGHT_STICK, SDL_JOYSTICK_TYPE_GAMECONTROLLER, SDL_JOYSTICK_TYPE_GUITAR, SDL_JOYSTICK_TYPE_THROTTLE, SDL_JOYSTICK_TYPE_UNKNOWN, and SDL_JOYSTICK_TYPE_WHEEL.

Referenced by SDL_JoystickGetDeviceType(), and SDL_JoystickGetType().

◆ SDL_GetNextJoystickInstanceID()

SDL_JoystickID SDL_GetNextJoystickInstanceID ( void  )

Definition at line 163 of file SDL_joystick.c.

164 {
166 }

References SDL_AtomicIncRef, and SDL_next_joystick_instance_id.

Referenced by IOS_AddJoystickDevice().

◆ SDL_IsJoystickHIDAPI()

SDL_bool SDL_IsJoystickHIDAPI ( SDL_JoystickGUID  guid)

Definition at line 1192 of file SDL_joystick.c.

1193 {
1194  return (guid.data[14] == 'h') ? SDL_TRUE : SDL_FALSE;
1195 }

References SDL_JoystickGUID::data, SDL_FALSE, and SDL_TRUE.

Referenced by SDL_PrivateGetControllerMappingForGUID(), and SDL_PrivateGetControllerMappingForNameAndGUID().

◆ SDL_IsJoystickNintendoSwitchPro()

SDL_bool SDL_IsJoystickNintendoSwitchPro ( Uint16  vendor,
Uint16  product 
)

Definition at line 1155 of file SDL_joystick.c.

1156 {
1157  return (GuessControllerType(vendor, product) == k_eControllerType_SwitchProController);
1158 }

References GuessControllerType(), and k_eControllerType_SwitchProController.

◆ SDL_IsJoystickProductFlightStick()

static SDL_bool SDL_IsJoystickProductFlightStick ( Uint32  vidpid)
static

Definition at line 1224 of file SDL_joystick.c.

1225 {
1226  static Uint32 flightstick_joysticks[] = {
1227  MAKE_VIDPID(0x044f, 0x0402), /* HOTAS Warthog Joystick */
1228  MAKE_VIDPID(0x0738, 0x2221), /* Saitek Pro Flight X-56 Rhino Stick */
1229  };
1230  int i;
1231 
1232  for (i = 0; i < SDL_arraysize(flightstick_joysticks); ++i) {
1233  if (vidpid == flightstick_joysticks[i]) {
1234  return SDL_TRUE;
1235  }
1236  }
1237  return SDL_FALSE;
1238 }

References i, MAKE_VIDPID, SDL_arraysize, SDL_FALSE, and SDL_TRUE.

Referenced by SDL_GetJoystickGUIDType().

◆ SDL_IsJoystickProductThrottle()

static SDL_bool SDL_IsJoystickProductThrottle ( Uint32  vidpid)
static

Definition at line 1240 of file SDL_joystick.c.

1241 {
1242  static Uint32 throttle_joysticks[] = {
1243  MAKE_VIDPID(0x044f, 0x0404), /* HOTAS Warthog Throttle */
1244  MAKE_VIDPID(0x0738, 0xa221), /* Saitek Pro Flight X-56 Rhino Throttle */
1245  };
1246  int i;
1247 
1248  for (i = 0; i < SDL_arraysize(throttle_joysticks); ++i) {
1249  if (vidpid == throttle_joysticks[i]) {
1250  return SDL_TRUE;
1251  }
1252  }
1253  return SDL_FALSE;
1254 }

References i, MAKE_VIDPID, SDL_arraysize, SDL_FALSE, and SDL_TRUE.

Referenced by SDL_GetJoystickGUIDType().

◆ SDL_IsJoystickProductWheel()

static SDL_bool SDL_IsJoystickProductWheel ( Uint32  vidpid)
static

Definition at line 1197 of file SDL_joystick.c.

1198 {
1199  static Uint32 wheel_joysticks[] = {
1200  MAKE_VIDPID(0x046d, 0xc294), /* Logitech generic wheel */
1201  MAKE_VIDPID(0x046d, 0xc295), /* Logitech Momo Force */
1202  MAKE_VIDPID(0x046d, 0xc298), /* Logitech Driving Force Pro */
1203  MAKE_VIDPID(0x046d, 0xc299), /* Logitech G25 */
1204  MAKE_VIDPID(0x046d, 0xc29a), /* Logitech Driving Force GT */
1205  MAKE_VIDPID(0x046d, 0xc29b), /* Logitech G27 */
1206  MAKE_VIDPID(0x046d, 0xc261), /* Logitech G920 (initial mode) */
1207  MAKE_VIDPID(0x046d, 0xc262), /* Logitech G920 (active mode) */
1208  MAKE_VIDPID(0x044f, 0xb65d), /* Thrustmaster Wheel FFB */
1209  MAKE_VIDPID(0x044f, 0xb66d), /* Thrustmaster Wheel FFB */
1210  MAKE_VIDPID(0x044f, 0xb677), /* Thrustmaster T150 */
1211  MAKE_VIDPID(0x044f, 0xb664), /* Thrustmaster TX (initial mode) */
1212  MAKE_VIDPID(0x044f, 0xb669), /* Thrustmaster TX (active mode) */
1213  };
1214  int i;
1215 
1216  for (i = 0; i < SDL_arraysize(wheel_joysticks); ++i) {
1217  if (vidpid == wheel_joysticks[i]) {
1218  return SDL_TRUE;
1219  }
1220  }
1221  return SDL_FALSE;
1222 }

References i, MAKE_VIDPID, SDL_arraysize, SDL_FALSE, and SDL_TRUE.

Referenced by SDL_GetJoystickGUIDType().

◆ SDL_IsJoystickPS4()

SDL_bool SDL_IsJoystickPS4 ( Uint16  vendor,
Uint16  product 
)

Definition at line 1149 of file SDL_joystick.c.

1150 {
1151  return (GuessControllerType(vendor, product) == k_eControllerType_PS4Controller);
1152 }

References GuessControllerType(), and k_eControllerType_PS4Controller.

Referenced by SDL_ShouldIgnoreJoystick().

◆ SDL_IsJoystickSteamController()

SDL_bool SDL_IsJoystickSteamController ( Uint16  vendor,
Uint16  product 
)

Definition at line 1161 of file SDL_joystick.c.

1162 {
1163  return BIsSteamController(GuessControllerType(vendor, product));
1164 }

References BIsSteamController(), and GuessControllerType().

◆ SDL_IsJoystickXbox360()

SDL_bool SDL_IsJoystickXbox360 ( Uint16  vendor,
Uint16  product 
)

Definition at line 1167 of file SDL_joystick.c.

1168 {
1169  /* Filter out some bogus values here */
1170  if (vendor == 0x0000 && product == 0x0000) {
1171  return SDL_FALSE;
1172  }
1173  if (vendor == 0x0001 && product == 0x0001) {
1174  return SDL_FALSE;
1175  }
1176  return (GuessControllerType(vendor, product) == k_eControllerType_XBox360Controller);
1177 }

References GuessControllerType(), k_eControllerType_XBox360Controller, and SDL_FALSE.

◆ SDL_IsJoystickXboxOne()

SDL_bool SDL_IsJoystickXboxOne ( Uint16  vendor,
Uint16  product 
)

Definition at line 1180 of file SDL_joystick.c.

1181 {
1182  return (GuessControllerType(vendor, product) == k_eControllerType_XBoxOneController);
1183 }

References GuessControllerType(), and k_eControllerType_XBoxOneController.

◆ SDL_IsJoystickXInput()

SDL_bool SDL_IsJoystickXInput ( SDL_JoystickGUID  guid)

Definition at line 1186 of file SDL_joystick.c.

1187 {
1188  return (guid.data[14] == 'x') ? SDL_TRUE : SDL_FALSE;
1189 }

References SDL_JoystickGUID::data, SDL_FALSE, and SDL_TRUE.

Referenced by SDL_GetJoystickGUIDType(), and SDL_PrivateGetControllerMappingForGUID().

◆ SDL_IsPS4RemapperRunning()

static SDL_bool SDL_IsPS4RemapperRunning ( void  )
static

Definition at line 1310 of file SDL_joystick.c.

1311 {
1312 #ifdef __WIN32__
1313  const char *mapper_processes[] = {
1314  "DS4Windows.exe",
1315  "InputMapper.exe",
1316  };
1317  int i;
1318  PROCESSENTRY32 pe32;
1319  SDL_bool found = SDL_FALSE;
1320 
1321  /* Take a snapshot of all processes in the system */
1322  HANDLE hProcessSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
1323  if (hProcessSnap != INVALID_HANDLE_VALUE) {
1324  pe32.dwSize = sizeof(PROCESSENTRY32);
1325  if (Process32First(hProcessSnap, &pe32)) {
1326  do
1327  {
1328  for (i = 0; i < SDL_arraysize(mapper_processes); ++i) {
1329  if (SDL_strcasecmp(pe32.szExeFile, mapper_processes[i]) == 0) {
1330  found = SDL_TRUE;
1331  }
1332  }
1333  } while (Process32Next(hProcessSnap, &pe32) && !found);
1334  }
1335  CloseHandle(hProcessSnap);
1336  }
1337  return found;
1338 #else
1339  return SDL_FALSE;
1340 #endif
1341 }

References i, SDL_arraysize, SDL_FALSE, SDL_strcasecmp, and SDL_TRUE.

Referenced by SDL_ShouldIgnoreJoystick().

◆ SDL_JoystickAllowBackgroundEventsChanged()

static void SDL_JoystickAllowBackgroundEventsChanged ( void userdata,
const char *  name,
const char *  oldValue,
const char *  hint 
)
static

Definition at line 104 of file SDL_joystick.c.

105 {
106  if (hint && *hint == '1') {
108  } else {
110  }
111 }

References SDL_FALSE, SDL_joystick_allows_background_events, and SDL_TRUE.

Referenced by SDL_JoystickInit(), and SDL_JoystickQuit().

◆ SDL_JoystickAxesCenteredAtZero()

static SDL_bool SDL_JoystickAxesCenteredAtZero ( SDL_Joystick *  joystick)
static

Definition at line 251 of file SDL_joystick.c.

252 {
253  static Uint32 zero_centered_joysticks[] = {
254  MAKE_VIDPID(0x0e8f, 0x3013), /* HuiJia SNES USB adapter */
255  MAKE_VIDPID(0x05a0, 0x3232), /* 8Bitdo Zero Gamepad */
256  };
257 
258  int i;
260  SDL_JoystickGetProduct(joystick));
261 
262 /*printf("JOYSTICK '%s' VID/PID 0x%.4x/0x%.4x AXES: %d\n", joystick->name, vendor, product, joystick->naxes);*/
263 
264  if (joystick->naxes == 2) {
265  /* Assume D-pad or thumbstick style axes are centered at 0 */
266  return SDL_TRUE;
267  }
268 
269  for (i = 0; i < SDL_arraysize(zero_centered_joysticks); ++i) {
270  if (id == zero_centered_joysticks[i]) {
271  return SDL_TRUE;
272  }
273  }
274  return SDL_FALSE;
275 }

References i, SDL_GameController::joystick, MAKE_VIDPID, SDL_arraysize, SDL_FALSE, SDL_JoystickGetProduct(), SDL_JoystickGetVendor(), and SDL_TRUE.

Referenced by SDL_JoystickOpen().

◆ SDL_JoystickClose()

void SDL_JoystickClose ( SDL_Joystick *  joystick)

Close a joystick previously opened with SDL_JoystickOpen().

Definition at line 643 of file SDL_joystick.c.

644 {
645  SDL_Joystick *joysticklist;
646  SDL_Joystick *joysticklistprev;
647 
648  if (!SDL_PrivateJoystickValid(joystick)) {
649  return;
650  }
651 
653 
654  /* First decrement ref count */
655  if (--joystick->ref_count > 0) {
657  return;
658  }
659 
660  if (SDL_updating_joystick) {
662  return;
663  }
664 
665  joystick->driver->Close(joystick);
666  joystick->hwdata = NULL;
667 
668  joysticklist = SDL_joysticks;
669  joysticklistprev = NULL;
670  while (joysticklist) {
671  if (joystick == joysticklist) {
672  if (joysticklistprev) {
673  /* unlink this entry */
674  joysticklistprev->next = joysticklist->next;
675  } else {
676  SDL_joysticks = joystick->next;
677  }
678  break;
679  }
680  joysticklistprev = joysticklist;
681  joysticklist = joysticklist->next;
682  }
683 
684  SDL_free(joystick->name);
685 
686  /* Free the data associated with this joystick */
687  SDL_free(joystick->axes);
688  SDL_free(joystick->hats);
689  SDL_free(joystick->balls);
690  SDL_free(joystick->buttons);
691  SDL_free(joystick);
692 
694 }

References NULL, SDL_free, SDL_joysticks, SDL_LockJoysticks(), SDL_PrivateJoystickValid(), SDL_UnlockJoysticks(), and SDL_updating_joystick.

Referenced by SDL_JoystickOpen(), SDL_JoystickQuit(), and SDL_JoystickUpdate().

◆ SDL_JoystickCurrentPowerLevel()

SDL_JoystickPowerLevel SDL_JoystickCurrentPowerLevel ( SDL_Joystick *  joystick)

Return the battery level of this joystick

Definition at line 1576 of file SDL_joystick.c.

1577 {
1578  if (!SDL_PrivateJoystickValid(joystick)) {
1580  }
1581  return joystick->epowerlevel;
1582 }

References SDL_JOYSTICK_POWER_UNKNOWN, and SDL_PrivateJoystickValid().

◆ SDL_JoystickEventState()

int SDL_JoystickEventState ( int  state)

Enable/disable joystick event polling.

If joystick events are disabled, you must call SDL_JoystickUpdate() yourself and check the state of the joystick when you want joystick information.

The state can be one of SDL_QUERY, SDL_ENABLE or SDL_IGNORE.

Definition at line 1082 of file SDL_joystick.c.

1083 {
1084 #if SDL_EVENTS_DISABLED
1085  return SDL_DISABLE;
1086 #else
1087  const Uint32 event_list[] = {
1090  };
1091  unsigned int i;
1092 
1093  switch (state) {
1094  case SDL_QUERY:
1095  state = SDL_DISABLE;
1096  for (i = 0; i < SDL_arraysize(event_list); ++i) {
1097  state = SDL_EventState(event_list[i], SDL_QUERY);
1098  if (state == SDL_ENABLE) {
1099  break;
1100  }
1101  }
1102  break;
1103  default:
1104  for (i = 0; i < SDL_arraysize(event_list); ++i) {
1105  SDL_EventState(event_list[i], state);
1106  }
1107  break;
1108  }
1109  return state;
1110 #endif /* SDL_EVENTS_DISABLED */
1111 }

References i, SDL_arraysize, SDL_DISABLE, SDL_ENABLE, SDL_EventState, SDL_JOYAXISMOTION, SDL_JOYBALLMOTION, SDL_JOYBUTTONDOWN, SDL_JOYBUTTONUP, SDL_JOYDEVICEADDED, SDL_JOYDEVICEREMOVED, SDL_JOYHATMOTION, SDL_QUERY, and state.

◆ SDL_JoystickFromInstanceID()

SDL_Joystick* SDL_JoystickFromInstanceID ( SDL_JoystickID  joyid)

Return the SDL_Joystick associated with an instance id.

Definition at line 594 of file SDL_joystick.c.

595 {
596  SDL_Joystick *joystick;
597 
599  for (joystick = SDL_joysticks; joystick; joystick = joystick->next) {
600  if (joystick->instance_id == joyid) {
601  break;
602  }
603  }
605  return joystick;
606 }

References SDL_joysticks, SDL_LockJoysticks(), and SDL_UnlockJoysticks().

◆ SDL_JoystickGetAttached()

SDL_bool SDL_JoystickGetAttached ( SDL_Joystick *  joystick)

Returns SDL_TRUE if the joystick has been opened and currently connected, or SDL_FALSE if it has not.

Definition at line 568 of file SDL_joystick.c.

569 {
570  if (!SDL_PrivateJoystickValid(joystick)) {
571  return SDL_FALSE;
572  }
573 
574  return joystick->attached;
575 }

References SDL_FALSE, and SDL_PrivateJoystickValid().

◆ SDL_JoystickGetAxis()

Sint16 SDL_JoystickGetAxis ( SDL_Joystick *  joystick,
int  axis 
)

Get the current state of an axis control on a joystick.

The state is a value ranging from -32768 to 32767.

The axis indices start at index 0.

Definition at line 460 of file SDL_joystick.c.

461 {
462  Sint16 state;
463 
464  if (!SDL_PrivateJoystickValid(joystick)) {
465  return 0;
466  }
467  if (axis < joystick->naxes) {
468  state = joystick->axes[axis].value;
469  } else {
470  SDL_SetError("Joystick only has %d axes", joystick->naxes);
471  state = 0;
472  }
473  return state;
474 }

References axis, SDL_PrivateJoystickValid(), SDL_SetError, and state.

◆ SDL_JoystickGetAxisInitialState()

SDL_bool SDL_JoystickGetAxisInitialState ( SDL_Joystick *  joystick,
int  axis,
Sint16 state 
)

Get the initial state of an axis control on a joystick.

The state is a value ranging from -32768 to 32767.

The axis indices start at index 0.

Returns
SDL_TRUE if this axis has any initial value, or SDL_FALSE if not.

Definition at line 480 of file SDL_joystick.c.

481 {
482  if (!SDL_PrivateJoystickValid(joystick)) {
483  return SDL_FALSE;
484  }
485  if (axis >= joystick->naxes) {
486  SDL_SetError("Joystick only has %d axes", joystick->naxes);
487  return SDL_FALSE;
488  }
489  if (state) {
490  *state = joystick->axes[axis].initial_value;
491  }
492  return joystick->axes[axis].has_initial_value;
493 }

References axis, SDL_FALSE, SDL_PrivateJoystickValid(), SDL_SetError, and state.

◆ SDL_JoystickGetBall()

int SDL_JoystickGetBall ( SDL_Joystick *  joystick,
int  ball,
int *  dx,
int *  dy 
)

Get the ball axis change since the last poll.

Returns
0, or -1 if you passed it invalid parameters.

The ball indices start at index 0.

Definition at line 519 of file SDL_joystick.c.

520 {
521  int retval;
522 
523  if (!SDL_PrivateJoystickValid(joystick)) {
524  return -1;
525  }
526 
527  retval = 0;
528  if (ball < joystick->nballs) {
529  if (dx) {
530  *dx = joystick->balls[ball].dx;
531  }
532  if (dy) {
533  *dy = joystick->balls[ball].dy;
534  }
535  joystick->balls[ball].dx = 0;
536  joystick->balls[ball].dy = 0;
537  } else {
538  return SDL_SetError("Joystick only has %d balls", joystick->nballs);
539  }
540  return retval;
541 }

References retval, SDL_PrivateJoystickValid(), and SDL_SetError.

◆ SDL_JoystickGetButton()

Uint8 SDL_JoystickGetButton ( SDL_Joystick *  joystick,
int  button 
)

Get the current state of a button on a joystick.

The button indices start at index 0.

Definition at line 547 of file SDL_joystick.c.

548 {
549  Uint8 state;
550 
551  if (!SDL_PrivateJoystickValid(joystick)) {
552  return 0;
553  }
554  if (button < joystick->nbuttons) {
555  state = joystick->buttons[button];
556  } else {
557  SDL_SetError("Joystick only has %d buttons", joystick->nbuttons);
558  state = 0;
559  }
560  return state;
561 }

References button, SDL_PrivateJoystickValid(), SDL_SetError, and state.

◆ SDL_JoystickGetDeviceGUID()

SDL_JoystickGUID SDL_JoystickGetDeviceGUID ( int  device_index)

Return the GUID for the joystick at this index This can be called before any joysticks are opened.

Definition at line 1363 of file SDL_joystick.c.

1364 {
1365  SDL_JoystickDriver *driver;
1366  SDL_JoystickGUID guid;
1367 
1369  if (SDL_GetDriverAndJoystickIndex(device_index, &driver, &device_index)) {
1370  guid = driver->GetDeviceGUID(device_index);
1371  } else {
1372  SDL_zero(guid);
1373  }
1375 
1376  return guid;
1377 }

References SDL_JoystickDriver::GetDeviceGUID, SDL_GetDriverAndJoystickIndex(), SDL_LockJoysticks(), SDL_UnlockJoysticks(), and SDL_zero.

Referenced by SDL_JoystickGetDeviceProduct(), SDL_JoystickGetDeviceProductVersion(), SDL_JoystickGetDeviceType(), and SDL_JoystickGetDeviceVendor().

◆ SDL_JoystickGetDeviceIndexFromInstanceID()

int SDL_JoystickGetDeviceIndexFromInstanceID ( SDL_JoystickID  instance_id)

Definition at line 1434 of file SDL_joystick.c.

1435 {
1436  int i, num_joysticks, device_index = -1;
1437 
1439  num_joysticks = SDL_NumJoysticks();
1440  for (i = 0; i < num_joysticks; ++i) {
1441  if (SDL_JoystickGetDeviceInstanceID(i) == instance_id) {
1442  device_index = i;
1443  break;
1444  }
1445  }
1447 
1448  return device_index;
1449 }

References i, SDL_JoystickGetDeviceInstanceID(), SDL_LockJoysticks(), SDL_NumJoysticks(), and SDL_UnlockJoysticks().

Referenced by SDL_PrivateJoystickAdded().

◆ SDL_JoystickGetDeviceInstanceID()

SDL_JoystickID SDL_JoystickGetDeviceInstanceID ( int  device_index)

Get the instance ID of a joystick. This can be called before any joysticks are opened. If the index is out of range, this function will return -1.

Definition at line 1420 of file SDL_joystick.c.

1421 {
1422  SDL_JoystickDriver *driver;
1423  SDL_JoystickID instance_id = -1;
1424 
1426  if (SDL_GetDriverAndJoystickIndex(device_index, &driver, &device_index)) {
1427  instance_id = driver->GetDeviceInstanceID(device_index);
1428  }
1430 
1431  return instance_id;
1432 }

References SDL_JoystickDriver::GetDeviceInstanceID, SDL_GetDriverAndJoystickIndex(), SDL_LockJoysticks(), and SDL_UnlockJoysticks().

Referenced by SDL_JoystickGetDeviceIndexFromInstanceID().

◆ SDL_JoystickGetDevicePlayerIndex()

int SDL_JoystickGetDevicePlayerIndex ( int  device_index)

Get the player index of a joystick, or -1 if it's not available This can be called before any joysticks are opened.

Definition at line 231 of file SDL_joystick.c.

232 {
233  SDL_JoystickDriver *driver;
234  int player_index = -1;
235 
237  if (SDL_GetDriverAndJoystickIndex(device_index, &driver, &device_index)) {
238  player_index = driver->GetDevicePlayerIndex(device_index);
239  }
241 
242  return player_index;
243 }

References SDL_JoystickDriver::GetDevicePlayerIndex, SDL_GetDriverAndJoystickIndex(), SDL_LockJoysticks(), and SDL_UnlockJoysticks().

◆ SDL_JoystickGetDeviceProduct()

Uint16 SDL_JoystickGetDeviceProduct ( int  device_index)

Get the USB product ID of a joystick, if available. This can be called before any joysticks are opened. If the product ID isn't available this function returns 0.

Definition at line 1388 of file SDL_joystick.c.

1389 {
1390  Uint16 product;
1391  SDL_JoystickGUID guid = SDL_JoystickGetDeviceGUID(device_index);
1392 
1393  SDL_GetJoystickGUIDInfo(guid, NULL, &product, NULL);
1394  return product;
1395 }

References NULL, SDL_GetJoystickGUIDInfo(), and SDL_JoystickGetDeviceGUID().

◆ SDL_JoystickGetDeviceProductVersion()

Uint16 SDL_JoystickGetDeviceProductVersion ( int  device_index)

Get the product version of a joystick, if available. This can be called before any joysticks are opened. If the product version isn't available this function returns 0.

Definition at line 1397 of file SDL_joystick.c.

1398 {
1399  Uint16 version;
1400  SDL_JoystickGUID guid = SDL_JoystickGetDeviceGUID(device_index);
1401 
1402  SDL_GetJoystickGUIDInfo(guid, NULL, NULL, &version);
1403  return version;
1404 }

References NULL, SDL_GetJoystickGUIDInfo(), and SDL_JoystickGetDeviceGUID().

◆ SDL_JoystickGetDeviceType()

SDL_JoystickType SDL_JoystickGetDeviceType ( int  device_index)

Get the type of a joystick, if available. This can be called before any joysticks are opened.

Definition at line 1406 of file SDL_joystick.c.

1407 {
1409  SDL_JoystickGUID guid = SDL_JoystickGetDeviceGUID(device_index);
1410 
1411  type = SDL_GetJoystickGUIDType(guid);
1413  if (SDL_IsGameController(device_index)) {
1415  }
1416  }
1417  return type;
1418 }

References SDL_GetJoystickGUIDType(), SDL_IsGameController, SDL_JOYSTICK_TYPE_GAMECONTROLLER, SDL_JOYSTICK_TYPE_UNKNOWN, and SDL_JoystickGetDeviceGUID().

◆ SDL_JoystickGetDeviceVendor()

Uint16 SDL_JoystickGetDeviceVendor ( int  device_index)

Get the USB vendor ID of a joystick, if available. This can be called before any joysticks are opened. If the vendor ID isn't available this function returns 0.

Definition at line 1379 of file SDL_joystick.c.

1380 {
1381  Uint16 vendor;
1382  SDL_JoystickGUID guid = SDL_JoystickGetDeviceGUID(device_index);
1383 
1384  SDL_GetJoystickGUIDInfo(guid, &vendor, NULL, NULL);
1385  return vendor;
1386 }

References NULL, SDL_GetJoystickGUIDInfo(), and SDL_JoystickGetDeviceGUID().

◆ SDL_JoystickGetGUID()

SDL_JoystickGUID SDL_JoystickGetGUID ( SDL_Joystick *  joystick)

Return the GUID for this opened joystick

Definition at line 1451 of file SDL_joystick.c.

1452 {
1453  if (!SDL_PrivateJoystickValid(joystick)) {
1454  SDL_JoystickGUID emptyGUID;
1455  SDL_zero(emptyGUID);
1456  return emptyGUID;
1457  }
1458  return joystick->guid;
1459 }

References SDL_PrivateJoystickValid(), and SDL_zero.

Referenced by SDL_JoystickGetProduct(), SDL_JoystickGetProductVersion(), SDL_JoystickGetType(), and SDL_JoystickGetVendor().

◆ SDL_JoystickGetGUIDFromString()

SDL_JoystickGUID SDL_JoystickGetGUIDFromString ( const char *  pchGUID)

Convert a string into a joystick guid

Definition at line 1548 of file SDL_joystick.c.

1549 {
1550  SDL_JoystickGUID guid;
1551  int maxoutputbytes= sizeof(guid);
1552  size_t len = SDL_strlen(pchGUID);
1553  Uint8 *p;
1554  size_t i;
1555 
1556  /* Make sure it's even */
1557  len = (len) & ~0x1;
1558 
1559  SDL_memset(&guid, 0x00, sizeof(guid));
1560 
1561  p = (Uint8 *)&guid;
1562  for (i = 0; (i < len) && ((p - (Uint8 *)&guid) < maxoutputbytes); i+=2, p++) {
1563  *p = (nibble(pchGUID[i]) << 4) | nibble(pchGUID[i+1]);
1564  }
1565 
1566  return guid;
1567 }

References i, nibble(), SDL_memset, and SDL_strlen.

◆ SDL_JoystickGetGUIDString()

void SDL_JoystickGetGUIDString ( SDL_JoystickGUID  guid,
char *  pszGUID,
int  cbGUID 
)

Return a string representation for this guid. pszGUID must point to at least 33 bytes (32 for the string plus a NULL terminator).

Definition at line 1503 of file SDL_joystick.c.

1504 {
1505  static const char k_rgchHexToASCII[] = "0123456789abcdef";
1506  int i;
1507 
1508  if ((pszGUID == NULL) || (cbGUID <= 0)) {
1509  return;
1510  }
1511 
1512  for (i = 0; i < sizeof(guid.data) && i < (cbGUID-1)/2; i++) {
1513  /* each input byte writes 2 ascii chars, and might write a null byte. */
1514  /* If we don't have room for next input byte, stop */
1515  unsigned char c = guid.data[i];
1516 
1517  *pszGUID++ = k_rgchHexToASCII[c >> 4];
1518  *pszGUID++ = k_rgchHexToASCII[c & 0x0F];
1519  }
1520  *pszGUID = '\0';
1521 }

References SDL_JoystickGUID::data, i, and NULL.

◆ SDL_JoystickGetHat()

Uint8 SDL_JoystickGetHat ( SDL_Joystick *  joystick,
int  hat 
)

Get the current state of a POV hat on a joystick.

The hat indices start at index 0.

Returns
The return value is one of the following positions:

Definition at line 499 of file SDL_joystick.c.

500 {
501  Uint8 state;
502 
503  if (!SDL_PrivateJoystickValid(joystick)) {
504  return 0;
505  }
506  if (hat < joystick->nhats) {
507  state = joystick->hats[hat];
508  } else {
509  SDL_SetError("Joystick only has %d hats", joystick->nhats);
510  state = 0;
511  }
512  return state;
513 }

References SDL_PrivateJoystickValid(), SDL_SetError, and state.

◆ SDL_JoystickGetPlayerIndex()

int SDL_JoystickGetPlayerIndex ( SDL_Joystick *  joystick)

Get the player index of an opened joystick, or -1 if it's not available

For XInput controllers this returns the XInput user index.

Definition at line 622 of file SDL_joystick.c.

623 {
624  if (!SDL_PrivateJoystickValid(joystick)) {
625  return -1;
626  }
627  return joystick->player_index;
628 }

References SDL_PrivateJoystickValid().

◆ SDL_JoystickGetProduct()

Uint16 SDL_JoystickGetProduct ( SDL_Joystick *  joystick)

Get the USB product ID of an opened joystick, if available. If the product ID isn't available this function returns 0.

Definition at line 1470 of file SDL_joystick.c.

1471 {
1472  Uint16 product;
1473  SDL_JoystickGUID guid = SDL_JoystickGetGUID(joystick);
1474 
1475  SDL_GetJoystickGUIDInfo(guid, NULL, &product, NULL);
1476  return product;
1477 }

References NULL, SDL_GetJoystickGUIDInfo(), and SDL_JoystickGetGUID().

Referenced by SDL_JoystickAxesCenteredAtZero().

◆ SDL_JoystickGetProductVersion()

Uint16 SDL_JoystickGetProductVersion ( SDL_Joystick *  joystick)

Get the product version of an opened joystick, if available. If the product version isn't available this function returns 0.

Definition at line 1479 of file SDL_joystick.c.

1480 {
1481  Uint16 version;
1482  SDL_JoystickGUID guid = SDL_JoystickGetGUID(joystick);
1483 
1484  SDL_GetJoystickGUIDInfo(guid, NULL, NULL, &version);
1485  return version;
1486 }

References NULL, SDL_GetJoystickGUIDInfo(), and SDL_JoystickGetGUID().

◆ SDL_JoystickGetType()

SDL_JoystickType SDL_JoystickGetType ( SDL_Joystick *  joystick)

Get the type of an opened joystick.

Definition at line 1488 of file SDL_joystick.c.

1489 {
1491  SDL_JoystickGUID guid = SDL_JoystickGetGUID(joystick);
1492 
1493  type = SDL_GetJoystickGUIDType(guid);
1495  if (joystick && joystick->is_game_controller) {
1497  }
1498  }
1499  return type;
1500 }

References SDL_GetJoystickGUIDType(), SDL_JOYSTICK_TYPE_GAMECONTROLLER, SDL_JOYSTICK_TYPE_UNKNOWN, and SDL_JoystickGetGUID().

◆ SDL_JoystickGetVendor()

Uint16 SDL_JoystickGetVendor ( SDL_Joystick *  joystick)

Get the USB vendor ID of an opened joystick, if available. If the vendor ID isn't available this function returns 0.

Definition at line 1461 of file SDL_joystick.c.

1462 {
1463  Uint16 vendor;
1464  SDL_JoystickGUID guid = SDL_JoystickGetGUID(joystick);
1465 
1466  SDL_GetJoystickGUIDInfo(guid, &vendor, NULL, NULL);
1467  return vendor;
1468 }

References NULL, SDL_GetJoystickGUIDInfo(), and SDL_JoystickGetGUID().

Referenced by SDL_JoystickAxesCenteredAtZero().

◆ SDL_JoystickInit()

int SDL_JoystickInit ( void  )

Definition at line 114 of file SDL_joystick.c.

115 {
116  int i, status;
117 
119 
120  /* Create the joystick list lock */
121  if (!SDL_joystick_lock) {
123  }
124 
125  /* See if we should allow joystick events while in the background */
128 
129 #if !SDL_EVENTS_DISABLED
131  return -1;
132  }
133 #endif /* !SDL_EVENTS_DISABLED */
134 
135  status = -1;
136  for (i = 0; i < SDL_arraysize(SDL_joystick_drivers); ++i) {
137  if (SDL_joystick_drivers[i]->Init() >= 0) {
138  status = 0;
139  }
140  }
141  return status;
142 }

References i, NULL, SDL_AddHintCallback, SDL_arraysize, SDL_CreateMutex, SDL_GameControllerInitMappings(), SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS, SDL_INIT_EVENTS, SDL_InitSubSystem, SDL_joystick_drivers, SDL_joystick_lock, and SDL_JoystickAllowBackgroundEventsChanged().

Referenced by SDL_InitSubSystem().

◆ SDL_JoystickInstanceID()

SDL_JoystickID SDL_JoystickInstanceID ( SDL_Joystick *  joystick)

Get the instance ID of an opened joystick or -1 if the joystick is invalid.

Definition at line 581 of file SDL_joystick.c.

582 {
583  if (!SDL_PrivateJoystickValid(joystick)) {
584  return -1;
585  }
586 
587  return joystick->instance_id;
588 }

References SDL_PrivateJoystickValid().

◆ SDL_JoystickName()

const char* SDL_JoystickName ( SDL_Joystick *  joystick)

Return the name for this currently opened joystick. If no name can be found, this function returns NULL.

Definition at line 612 of file SDL_joystick.c.

613 {
614  if (!SDL_PrivateJoystickValid(joystick)) {
615  return NULL;
616  }
617 
618  return SDL_FixupJoystickName(joystick->name);
619 }

References NULL, SDL_FixupJoystickName(), and SDL_PrivateJoystickValid().

◆ SDL_JoystickNameForIndex()

const char* SDL_JoystickNameForIndex ( int  device_index)

Get the implementation dependent name of a joystick. This can be called before any joysticks are opened. If no name can be found, this function returns NULL.

Definition at line 215 of file SDL_joystick.c.

216 {
217  SDL_JoystickDriver *driver;
218  const char *name = NULL;
219 
221  if (SDL_GetDriverAndJoystickIndex(device_index, &driver, &device_index)) {
222  name = SDL_FixupJoystickName(driver->GetDeviceName(device_index));
223  }
225 
226  /* FIXME: Really we should reference count this name so it doesn't go away after unlock */
227  return name;
228 }

References SDL_JoystickDriver::GetDeviceName, NULL, SDL_FixupJoystickName(), SDL_GetDriverAndJoystickIndex(), SDL_LockJoysticks(), and SDL_UnlockJoysticks().

◆ SDL_JoystickNumAxes()

int SDL_JoystickNumAxes ( SDL_Joystick *  joystick)

Get the number of general axis controls on a joystick.

Definition at line 412 of file SDL_joystick.c.

413 {
414  if (!SDL_PrivateJoystickValid(joystick)) {
415  return -1;
416  }
417  return joystick->naxes;
418 }

References SDL_PrivateJoystickValid().

◆ SDL_JoystickNumBalls()

int SDL_JoystickNumBalls ( SDL_Joystick *  joystick)

Get the number of trackballs on a joystick.

Joystick trackballs have only relative motion events associated with them and their state cannot be polled.

Definition at line 436 of file SDL_joystick.c.

437 {
438  if (!SDL_PrivateJoystickValid(joystick)) {
439  return -1;
440  }
441  return joystick->nballs;
442 }

References SDL_PrivateJoystickValid().

◆ SDL_JoystickNumButtons()

int SDL_JoystickNumButtons ( SDL_Joystick *  joystick)

Get the number of buttons on a joystick.

Definition at line 448 of file SDL_joystick.c.

449 {
450  if (!SDL_PrivateJoystickValid(joystick)) {
451  return -1;
452  }
453  return joystick->nbuttons;
454 }

References SDL_PrivateJoystickValid().

◆ SDL_JoystickNumHats()

int SDL_JoystickNumHats ( SDL_Joystick *  joystick)

Get the number of POV hats on a joystick.

Definition at line 424 of file SDL_joystick.c.

425 {
426  if (!SDL_PrivateJoystickValid(joystick)) {
427  return -1;
428  }
429  return joystick->nhats;
430 }

References SDL_PrivateJoystickValid().

◆ SDL_JoystickOpen()

SDL_Joystick* SDL_JoystickOpen ( int  device_index)

Open a joystick for use. The index passed as an argument refers to the N'th joystick on the system. This index is not the value which will identify this joystick in future joystick events. The joystick's instance id (SDL_JoystickID) will be used there instead.

Returns
A joystick identifier, or NULL if an error occurred.

Definition at line 285 of file SDL_joystick.c.

286 {
287  SDL_JoystickDriver *driver;
288  SDL_JoystickID instance_id;
289  SDL_Joystick *joystick;
290  SDL_Joystick *joysticklist;
291  const char *joystickname = NULL;
292 
294 
295  if (!SDL_GetDriverAndJoystickIndex(device_index, &driver, &device_index)) {
297  return NULL;
298  }
299 
300  joysticklist = SDL_joysticks;
301  /* If the joystick is already open, return it
302  * it is important that we have a single joystick * for each instance id
303  */
304  instance_id = driver->GetDeviceInstanceID(device_index);
305  while (joysticklist) {
306  if (instance_id == joysticklist->instance_id) {
307  joystick = joysticklist;
308  ++joystick->ref_count;
310  return joystick;
311  }
312  joysticklist = joysticklist->next;
313  }
314 
315  /* Create and initialize the joystick */
316  joystick = (SDL_Joystick *) SDL_calloc(sizeof(*joystick), 1);
317  if (joystick == NULL) {
318  SDL_OutOfMemory();
320  return NULL;
321  }
322  joystick->driver = driver;
323  joystick->instance_id = instance_id;
324  joystick->attached = SDL_TRUE;
325  joystick->player_index = -1;
326 
327  if (driver->Open(joystick, device_index) < 0) {
328  SDL_free(joystick);
330  return NULL;
331  }
332 
333  joystickname = driver->GetDeviceName(device_index);
334  if (joystickname) {
335  joystick->name = SDL_strdup(joystickname);
336  } else {
337  joystick->name = NULL;
338  }
339 
340  joystick->guid = driver->GetDeviceGUID(device_index);
341 
342  if (joystick->naxes > 0) {
343  joystick->axes = (SDL_JoystickAxisInfo *) SDL_calloc(joystick->naxes, sizeof(SDL_JoystickAxisInfo));
344  }
345  if (joystick->nhats > 0) {
346  joystick->hats = (Uint8 *) SDL_calloc(joystick->nhats, sizeof(Uint8));
347  }
348  if (joystick->nballs > 0) {
349  joystick->balls = (struct balldelta *) SDL_calloc(joystick->nballs, sizeof(*joystick->balls));
350  }
351  if (joystick->nbuttons > 0) {
352  joystick->buttons = (Uint8 *) SDL_calloc(joystick->nbuttons, sizeof(Uint8));
353  }
354  if (((joystick->naxes > 0) && !joystick->axes)
355  || ((joystick->nhats > 0) && !joystick->hats)
356  || ((joystick->nballs > 0) && !joystick->balls)
357  || ((joystick->nbuttons > 0) && !joystick->buttons)) {
358  SDL_OutOfMemory();
359  SDL_JoystickClose(joystick);
361  return NULL;
362  }
363  joystick->epowerlevel = SDL_JOYSTICK_POWER_UNKNOWN;
364 
365  /* If this joystick is known to have all zero centered axes, skip the auto-centering code */
366  if (SDL_JoystickAxesCenteredAtZero(joystick)) {
367  int i;
368 
369  for (i = 0; i < joystick->naxes; ++i) {
370  joystick->axes[i].has_initial_value = SDL_TRUE;
371  }
372  }
373 
374  joystick->is_game_controller = SDL_IsGameController(device_index);
375 
376  /* Add joystick to list */
377  ++joystick->ref_count;
378  /* Link the joystick in the list */
379  joystick->next = SDL_joysticks;
380  SDL_joysticks = joystick;
381 
383 
384  driver->Update(joystick);
385 
386  return joystick;
387 }

References SDL_JoystickDriver::GetDeviceGUID, SDL_JoystickDriver::GetDeviceInstanceID, SDL_JoystickDriver::GetDeviceName, i, SDL_GameController::joystick, NULL, SDL_JoystickDriver::Open, SDL_calloc, SDL_free, SDL_GetDriverAndJoystickIndex(), SDL_IsGameController, SDL_JOYSTICK_POWER_UNKNOWN, SDL_JoystickAxesCenteredAtZero(), SDL_JoystickClose(), SDL_joysticks, SDL_LockJoysticks(), SDL_OutOfMemory, SDL_strdup, SDL_TRUE, SDL_UnlockJoysticks(), and SDL_JoystickDriver::Update.

◆ SDL_JoystickQuit()

void SDL_JoystickQuit ( void  )

Definition at line 697 of file SDL_joystick.c.

698 {
699  int i;
700 
701  /* Make sure we're not getting called in the middle of updating joysticks */
703 
705 
706  /* Stop the event polling */
707  while (SDL_joysticks) {
708  SDL_joysticks->ref_count = 1;
710  }
711 
712  /* Quit the joystick setup */
713  for (i = 0; i < SDL_arraysize(SDL_joystick_drivers); ++i) {
715  }
716 
718 
719 #if !SDL_EVENTS_DISABLED
721 #endif
722 
725 
726  if (SDL_joystick_lock) {
729  }
730 
732 }

References i, NULL, SDL_JoystickDriver::Quit, SDL_arraysize, SDL_assert, SDL_DelHintCallback, SDL_DestroyMutex, SDL_GameControllerQuitMappings(), SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS, SDL_INIT_EVENTS, SDL_joystick_drivers, SDL_joystick_lock, SDL_JoystickAllowBackgroundEventsChanged(), SDL_JoystickClose(), SDL_joysticks, SDL_LockJoysticks(), SDL_QuitSubSystem, SDL_UnlockJoysticks(), and SDL_updating_joystick.

Referenced by SDL_QuitSubSystem().

◆ SDL_JoystickRumble()

int SDL_JoystickRumble ( SDL_Joystick *  joystick,
Uint16  low_frequency_rumble,
Uint16  high_frequency_rumble,
Uint32  duration_ms 
)

Trigger a rumble effect Each call to this function cancels any previous rumble effect, and calling it with 0 intensity stops any rumbling.

Parameters
joystickThe joystick to vibrate
low_frequency_rumbleThe intensity of the low frequency (left) rumble motor, from 0 to 0xFFFF
high_frequency_rumbleThe intensity of the high frequency (right) rumble motor, from 0 to 0xFFFF
duration_msThe duration of the rumble effect, in milliseconds
Returns
0, or -1 if rumble isn't supported on this joystick

Definition at line 631 of file SDL_joystick.c.

632 {
633  if (!SDL_PrivateJoystickValid(joystick)) {
634  return -1;
635  }
636  return joystick->driver->Rumble(joystick, low_frequency_rumble, high_frequency_rumble, duration_ms);
637 }

References SDL_PrivateJoystickValid().

◆ SDL_JoystickUpdate()

void SDL_JoystickUpdate ( void  )

Update the current state of the open joysticks.

This is called automatically by the event loop if any joystick events are enabled.

Definition at line 1013 of file SDL_joystick.c.

1014 {
1015  int i;
1016  SDL_Joystick *joystick;
1017 
1019 
1020  if (SDL_updating_joystick) {
1021  /* The joysticks are already being updated */
1023  return;
1024  }
1025 
1027 
1028  /* Make sure the list is unlocked while dispatching events to prevent application deadlocks */
1030 
1031  for (joystick = SDL_joysticks; joystick; joystick = joystick->next) {
1032  if (joystick->attached) {
1033  joystick->driver->Update(joystick);
1034 
1035  if (joystick->delayed_guide_button) {
1037  }
1038  }
1039 
1040  if (joystick->force_recentering) {
1041  /* Tell the app that everything is centered/unpressed... */
1042  for (i = 0; i < joystick->naxes; i++) {
1043  if (joystick->axes[i].has_initial_value) {
1044  SDL_PrivateJoystickAxis(joystick, i, joystick->axes[i].zero);
1045  }
1046  }
1047 
1048  for (i = 0; i < joystick->nbuttons; i++) {
1049  SDL_PrivateJoystickButton(joystick, i, 0);
1050  }
1051 
1052  for (i = 0; i < joystick->nhats; i++) {
1054  }
1055 
1056  joystick->force_recentering = SDL_FALSE;
1057  }
1058  }
1059 
1061 
1063 
1064  /* If any joysticks were closed while updating, free them here */
1065  for (joystick = SDL_joysticks; joystick; joystick = joystick->next) {
1066  if (joystick->ref_count <= 0) {
1067  SDL_JoystickClose(joystick);
1068  }
1069  }
1070 
1071  /* this needs to happen AFTER walking the joystick list above, so that any
1072  dangling hardware data from removed devices can be free'd
1073  */
1074  for (i = 0; i < SDL_arraysize(SDL_joystick_drivers); ++i) {
1076  }
1077 
1079 }

References SDL_JoystickDriver::Detect, i, SDL_arraysize, SDL_FALSE, SDL_GameControllerHandleDelayedGuideButton(), SDL_HAT_CENTERED, SDL_joystick_drivers, SDL_JoystickClose(), SDL_joysticks, SDL_LockJoysticks(), SDL_PrivateJoystickAxis(), SDL_PrivateJoystickButton(), SDL_PrivateJoystickHat(), SDL_TRUE, SDL_UnlockJoysticks(), and SDL_updating_joystick.

◆ SDL_LockJoysticks()

void SDL_LockJoysticks ( void  )

Locking for multi-threaded access to the joystick API

If you are using the joystick API or handling events from multiple threads you should use these locking functions to protect access to the joysticks.

In particular, you are guaranteed that the joystick list won't change, so the API functions that take a joystick index will be valid, and joystick and game controller events will not be delivered.

Definition at line 87 of file SDL_joystick.c.

88 {
89  if (SDL_joystick_lock) {
91  }
92 }

References SDL_joystick_lock, and SDL_LockMutex.

Referenced by SDL_JoystickClose(), SDL_JoystickFromInstanceID(), SDL_JoystickGetDeviceGUID(), SDL_JoystickGetDeviceIndexFromInstanceID(), SDL_JoystickGetDeviceInstanceID(), SDL_JoystickGetDevicePlayerIndex(), SDL_JoystickNameForIndex(), SDL_JoystickOpen(), SDL_JoystickQuit(), SDL_JoystickUpdate(), and SDL_NumJoysticks().

◆ SDL_NumJoysticks()

int SDL_NumJoysticks ( void  )

Count the number of joysticks attached to the system right now

Definition at line 148 of file SDL_joystick.c.

149 {
150  int i, total_joysticks = 0;
152  for (i = 0; i < SDL_arraysize(SDL_joystick_drivers); ++i) {
153  total_joysticks += SDL_joystick_drivers[i]->GetCount();
154  }
156  return total_joysticks;
157 }

References SDL_JoystickDriver::GetCount, i, SDL_arraysize, SDL_joystick_drivers, SDL_LockJoysticks(), and SDL_UnlockJoysticks().

Referenced by SDL_JoystickGetDeviceIndexFromInstanceID().

◆ SDL_PrivateJoystickAdded()

void SDL_PrivateJoystickAdded ( SDL_JoystickID  device_instance)

Definition at line 751 of file SDL_joystick.c.

752 {
753 #if !SDL_EVENTS_DISABLED
755  int device_index;
756 
757  device_index = SDL_JoystickGetDeviceIndexFromInstanceID(device_instance);
758  if (device_index < 0) {
759  return;
760  }
761 
762  event.type = SDL_JOYDEVICEADDED;
763 
764  if (SDL_GetEventState(event.type) == SDL_ENABLE) {
765  event.jdevice.which = device_index;
767  }
768 #endif /* !SDL_EVENTS_DISABLED */
769 }

References SDL_ENABLE, SDL_GetEventState, SDL_JOYDEVICEADDED, SDL_JoystickGetDeviceIndexFromInstanceID(), and SDL_PushEvent.

Referenced by IOS_AddJoystickDevice().

◆ SDL_PrivateJoystickAxis()

int SDL_PrivateJoystickAxis ( SDL_Joystick *  joystick,
Uint8  axis,
Sint16  value 
)

Definition at line 828 of file SDL_joystick.c.

829 {
830  int posted;
831 
832  /* Make sure we're not getting garbage or duplicate events */
833  if (axis >= joystick->naxes) {
834  return 0;
835  }
836  if (!joystick->axes[axis].has_initial_value) {
837  joystick->axes[axis].initial_value = value;
838  joystick->axes[axis].value = value;
839  joystick->axes[axis].zero = value;
840  joystick->axes[axis].has_initial_value = SDL_TRUE;
841  }
842  if (value == joystick->axes[axis].value) {
843  return 0;
844  }
845  if (!joystick->axes[axis].sent_initial_value) {
846  /* Make sure we don't send motion until there's real activity on this axis */
847  const int MAX_ALLOWED_JITTER = SDL_JOYSTICK_AXIS_MAX / 80; /* ShanWan PS3 controller needed 96 */
848  if (SDL_abs(value - joystick->axes[axis].value) <= MAX_ALLOWED_JITTER) {
849  return 0;
850  }
851  joystick->axes[axis].sent_initial_value = SDL_TRUE;
852  joystick->axes[axis].value = value; /* Just so we pass the check above */
853  SDL_PrivateJoystickAxis(joystick, axis, joystick->axes[axis].initial_value);
854  }
855 
856  /* We ignore events if we don't have keyboard focus, except for centering
857  * events.
858  */
860  if ((value > joystick->axes[axis].zero && value >= joystick->axes[axis].value) ||
861  (value < joystick->axes[axis].zero && value <= joystick->axes[axis].value)) {
862  return 0;
863  }
864  }
865 
866  /* Update internal joystick state */
867  joystick->axes[axis].value = value;
868 
869  /* Post the event, if desired */
870  posted = 0;
871 #if !SDL_EVENTS_DISABLED
874  event.type = SDL_JOYAXISMOTION;
875  event.jaxis.which = joystick->instance_id;
876  event.jaxis.axis = axis;
877  event.jaxis.value = value;
878  posted = SDL_PushEvent(&event) == 1;
879  }
880 #endif /* !SDL_EVENTS_DISABLED */
881  return posted;
882 }

References axis, SDL_abs, SDL_ENABLE, SDL_GetEventState, SDL_JOYAXISMOTION, SDL_JOYSTICK_AXIS_MAX, SDL_PrivateJoystickAxis(), SDL_PrivateJoystickShouldIgnoreEvent(), SDL_PushEvent, and SDL_TRUE.

Referenced by IOS_AccelerometerUpdate(), IOS_MFIJoystickUpdate(), SDL_JoystickUpdate(), and SDL_PrivateJoystickAxis().

◆ SDL_PrivateJoystickBall()

int SDL_PrivateJoystickBall ( SDL_Joystick *  joystick,
Uint8  ball,
Sint16  xrel,
Sint16  yrel 
)

Definition at line 925 of file SDL_joystick.c.

927 {
928  int posted;
929 
930  /* Make sure we're not getting garbage events */
931  if (ball >= joystick->nballs) {
932  return 0;
933  }
934 
935  /* We ignore events if we don't have keyboard focus. */
937  return 0;
938  }
939 
940  /* Update internal mouse state */
941  joystick->balls[ball].dx += xrel;
942  joystick->balls[ball].dy += yrel;
943 
944  /* Post the event, if desired */
945  posted = 0;
946 #if !SDL_EVENTS_DISABLED
949  event.jball.type = SDL_JOYBALLMOTION;
950  event.jball.which = joystick->instance_id;
951  event.jball.ball = ball;
952  event.jball.xrel = xrel;
953  event.jball.yrel = yrel;
954  posted = SDL_PushEvent(&event) == 1;
955  }
956 #endif /* !SDL_EVENTS_DISABLED */
957  return posted;
958 }

References SDL_ENABLE, SDL_GetEventState, SDL_JOYBALLMOTION, SDL_PrivateJoystickShouldIgnoreEvent(), and SDL_PushEvent.

◆ SDL_PrivateJoystickBatteryLevel()

void SDL_PrivateJoystickBatteryLevel ( SDL_Joystick *  joystick,
SDL_JoystickPowerLevel  ePowerLevel 
)

Definition at line 1570 of file SDL_joystick.c.

1571 {
1572  joystick->epowerlevel = ePowerLevel;
1573 }

◆ SDL_PrivateJoystickButton()

int SDL_PrivateJoystickButton ( SDL_Joystick *  joystick,
Uint8  button,
Uint8  state 
)

Definition at line 961 of file SDL_joystick.c.

962 {
963  int posted;
964 #if !SDL_EVENTS_DISABLED
966 
967  switch (state) {
968  case SDL_PRESSED:
969  event.type = SDL_JOYBUTTONDOWN;
970  break;
971  case SDL_RELEASED:
972  event.type = SDL_JOYBUTTONUP;
973  break;
974  default:
975  /* Invalid state -- bail */
976  return 0;
977  }
978 #endif /* !SDL_EVENTS_DISABLED */
979 
980  /* Make sure we're not getting garbage or duplicate events */
981  if (button >= joystick->nbuttons) {
982  return 0;
983  }
984  if (state == joystick->buttons[button]) {
985  return 0;
986  }
987 
988  /* We ignore events if we don't have keyboard focus, except for button
989  * release. */
991  if (state == SDL_PRESSED) {
992  return 0;
993  }
994  }
995 
996  /* Update internal joystick state */
997  joystick->buttons[button] = state;
998 
999  /* Post the event, if desired */
1000  posted = 0;
1001 #if !SDL_EVENTS_DISABLED
1002  if (SDL_GetEventState(event.type) == SDL_ENABLE) {
1003  event.jbutton.which = joystick->instance_id;
1004  event.jbutton.button = button;
1005  event.jbutton.state = state;
1006  posted = SDL_PushEvent(&event) == 1;
1007  }
1008 #endif /* !SDL_EVENTS_DISABLED */
1009  return posted;
1010 }

References button, SDL_ENABLE, SDL_GetEventState, SDL_JOYBUTTONDOWN, SDL_JOYBUTTONUP, SDL_PRESSED, SDL_PrivateJoystickShouldIgnoreEvent(), SDL_PushEvent, SDL_RELEASED, and state.

Referenced by IOS_MFIJoystickUpdate(), and SDL_JoystickUpdate().

◆ SDL_PrivateJoystickHat()

int SDL_PrivateJoystickHat ( SDL_Joystick *  joystick,
Uint8  hat,
Uint8  value 
)

Definition at line 885 of file SDL_joystick.c.

886 {
887  int posted;
888 
889  /* Make sure we're not getting garbage or duplicate events */
890  if (hat >= joystick->nhats) {
891  return 0;
892  }
893  if (value == joystick->hats[hat]) {
894  return 0;
895  }
896 
897  /* We ignore events if we don't have keyboard focus, except for centering
898  * events.
899  */
901  if (value != SDL_HAT_CENTERED) {
902  return 0;
903  }
904  }
905 
906  /* Update internal joystick state */
907  joystick->hats[hat] = value;
908 
909  /* Post the event, if desired */
910  posted = 0;
911 #if !SDL_EVENTS_DISABLED
914  event.jhat.type = SDL_JOYHATMOTION;
915  event.jhat.which = joystick->instance_id;
916  event.jhat.hat = hat;
917  event.jhat.value = value;
918  posted = SDL_PushEvent(&event) == 1;
919  }
920 #endif /* !SDL_EVENTS_DISABLED */
921  return posted;
922 }

References SDL_ENABLE, SDL_GetEventState, SDL_HAT_CENTERED, SDL_JOYHATMOTION, SDL_PrivateJoystickShouldIgnoreEvent(), and SDL_PushEvent.

Referenced by IOS_MFIJoystickUpdate(), and SDL_JoystickUpdate().

◆ SDL_PrivateJoystickRemoved()

void SDL_PrivateJoystickRemoved ( SDL_JoystickID  device_instance)

Definition at line 800 of file SDL_joystick.c.

801 {
802  SDL_Joystick *joystick;
803 
804 #if !SDL_EVENTS_DISABLED
806 
807  event.type = SDL_JOYDEVICEREMOVED;
808 
809  if (SDL_GetEventState(event.type) == SDL_ENABLE) {
810  event.jdevice.which = device_instance;
812  }
813 
815 #endif /* !SDL_EVENTS_DISABLED */
816 
817  /* Mark this joystick as no longer attached */
818  for (joystick = SDL_joysticks; joystick; joystick = joystick->next) {
819  if (joystick->instance_id == device_instance) {
820  joystick->attached = SDL_FALSE;
821  joystick->force_recentering = SDL_TRUE;
822  break;
823  }
824  }
825 }

References SDL_ENABLE, SDL_FALSE, SDL_GetEventState, SDL_JOYDEVICEREMOVED, SDL_joysticks, SDL_PushEvent, SDL_TRUE, and UpdateEventsForDeviceRemoval().

Referenced by IOS_RemoveJoystickDevice().

◆ SDL_PrivateJoystickShouldIgnoreEvent()

static SDL_bool SDL_PrivateJoystickShouldIgnoreEvent ( )
static

Definition at line 736 of file SDL_joystick.c.

737 {
739  return SDL_FALSE;
740  }
741 
742  if (SDL_HasWindows() && SDL_GetKeyboardFocus() == NULL) {
743  /* We have windows but we don't have focus, ignore the event. */
744  return SDL_TRUE;
745  }
746  return SDL_FALSE;
747 }

References NULL, SDL_FALSE, SDL_GetKeyboardFocus, SDL_HasWindows(), SDL_joystick_allows_background_events, and SDL_TRUE.

Referenced by SDL_PrivateJoystickAxis(), SDL_PrivateJoystickBall(), SDL_PrivateJoystickButton(), and SDL_PrivateJoystickHat().

◆ SDL_PrivateJoystickValid()

int SDL_PrivateJoystickValid ( SDL_Joystick *  joystick)

◆ SDL_ShouldIgnoreJoystick()

SDL_bool SDL_ShouldIgnoreJoystick ( const char *  name,
SDL_JoystickGUID  guid 
)

Definition at line 1343 of file SDL_joystick.c.

1344 {
1345  Uint16 vendor;
1346  Uint16 product;
1347 
1348  SDL_GetJoystickGUIDInfo(guid, &vendor, &product, NULL);
1349 
1350  if (SDL_IsJoystickPS4(vendor, product) && SDL_IsPS4RemapperRunning()) {
1351  return SDL_TRUE;
1352  }
1353 
1356  return SDL_TRUE;
1357  }
1358 
1359  return SDL_FALSE;
1360 }

References NULL, SDL_FALSE, SDL_GetJoystickGUIDInfo(), SDL_IsGameControllerNameAndGUID(), SDL_IsJoystickPS4(), SDL_IsPS4RemapperRunning(), SDL_ShouldIgnoreGameController(), and SDL_TRUE.

◆ SDL_UnlockJoysticks()

◆ UpdateEventsForDeviceRemoval()

static void UpdateEventsForDeviceRemoval ( )
static

Definition at line 776 of file SDL_joystick.c.

777 {
778  int i, num_events;
779  SDL_Event *events;
780 
782  if (num_events <= 0) {
783  return;
784  }
785 
786  events = SDL_stack_alloc(SDL_Event, num_events);
787  if (!events) {
788  return;
789  }
790 
792  for (i = 0; i < num_events; ++i) {
793  --events[i].jdevice.which;
794  }
795  SDL_PeepEvents(events, num_events, SDL_ADDEVENT, 0, 0);
796 
798 }

References events, i, SDL_Event::jdevice, NULL, SDL_ADDEVENT, SDL_GETEVENT, SDL_JOYDEVICEADDED, SDL_PEEKEVENT, SDL_PeepEvents, SDL_stack_alloc, SDL_stack_free, and SDL_JoyDeviceEvent::which.

Referenced by SDL_PrivateJoystickRemoved().

Variable Documentation

◆ SDL_joystick_allows_background_events

SDL_bool SDL_joystick_allows_background_events = SDL_FALSE
static

◆ SDL_joystick_drivers

◆ SDL_joystick_lock

SDL_mutex* SDL_joystick_lock = NULL
static

◆ SDL_joysticks

◆ SDL_next_joystick_instance_id

SDL_atomic_t SDL_next_joystick_instance_id
static

Definition at line 84 of file SDL_joystick.c.

Referenced by SDL_GetNextJoystickInstanceID().

◆ SDL_updating_joystick

SDL_bool SDL_updating_joystick = SDL_FALSE
static

Definition at line 82 of file SDL_joystick.c.

Referenced by SDL_JoystickClose(), SDL_JoystickQuit(), and SDL_JoystickUpdate().

SDL_zero
#define SDL_zero(x)
Definition: SDL_stdinc.h:416
SDL_JOYSTICK_TYPE_GAMECONTROLLER
@ SDL_JOYSTICK_TYPE_GAMECONTROLLER
Definition: SDL_joystick.h:86
Uint8
uint8_t Uint8
Definition: SDL_stdinc.h:179
SDL_memset
#define SDL_memset
Definition: SDL_dynapi_overrides.h:386
c
const GLubyte * c
Definition: SDL_opengl_glext.h:11093
SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS
#define SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS
A variable that lets you enable joystick (and gamecontroller) events even when your app is in the bac...
Definition: SDL_hints.h:476
Uint16
uint16_t Uint16
Definition: SDL_stdinc.h:191
SDL_IsGameController
#define SDL_IsGameController
Definition: SDL_dynapi_overrides.h:138
SDL_abs
#define SDL_abs
Definition: SDL_dynapi_overrides.h:381
SDL_JoystickAxesCenteredAtZero
static SDL_bool SDL_JoystickAxesCenteredAtZero(SDL_Joystick *joystick)
Definition: SDL_joystick.c:251
SDL_LockMutex
#define SDL_LockMutex
Definition: SDL_dynapi_overrides.h:260
SDL_HAT_CENTERED
#define SDL_HAT_CENTERED
Definition: SDL_joystick.h:329
SDL_ADDEVENT
@ SDL_ADDEVENT
Definition: SDL_events.h:612
NULL
#define NULL
Definition: begin_code.h:164
k_eControllerType_SwitchProController
@ k_eControllerType_SwitchProController
Definition: controller_type.h:54
SDL_JoystickGetDeviceIndexFromInstanceID
int SDL_JoystickGetDeviceIndexFromInstanceID(SDL_JoystickID instance_id)
Definition: SDL_joystick.c:1434
SDL_JoystickID
Sint32 SDL_JoystickID
Definition: SDL_joystick.h:81
SDL_IsPS4RemapperRunning
static SDL_bool SDL_IsPS4RemapperRunning(void)
Definition: SDL_joystick.c:1310
SDL_FixupJoystickName
static const char * SDL_FixupJoystickName(const char *name)
Definition: SDL_joystick.c:198
SDL_INIT_EVENTS
#define SDL_INIT_EVENTS
Definition: SDL.h:83
SDL_IsJoystickPS4
SDL_bool SDL_IsJoystickPS4(Uint16 vendor, Uint16 product)
Definition: SDL_joystick.c:1149
SDL_joystick_allows_background_events
static SDL_bool SDL_joystick_allows_background_events
Definition: SDL_joystick.c:80
SDL_JoystickDriver::GetDeviceInstanceID
SDL_JoystickID(* GetDeviceInstanceID)(int device_index)
Definition: SDL_sysjoystick.h:116
SDL_AtomicIncRef
#define SDL_AtomicIncRef(a)
Increment an atomic variable used as a reference count.
Definition: SDL_atomic.h:234
SDL_QuitSubSystem
#define SDL_QuitSubSystem
Definition: SDL_dynapi_overrides.h:56
SDL_Event::jdevice
SDL_JoyDeviceEvent jdevice
Definition: SDL_events.h:573
SDL_CreateMutex
#define SDL_CreateMutex
Definition: SDL_dynapi_overrides.h:259
SDL_JoystickDriver::Detect
void(* Detect)(void)
Definition: SDL_sysjoystick.h:104
SDL_JoystickDriver::Open
int(* Open)(SDL_Joystick *joystick, int device_index)
Definition: SDL_sysjoystick.h:123
Uint32
uint32_t Uint32
Definition: SDL_stdinc.h:203
SDL_ENABLE
#define SDL_ENABLE
Definition: SDL_events.h:756
SDL_NumJoysticks
int SDL_NumJoysticks(void)
Definition: SDL_joystick.c:148
BIsSteamController
static SDL_bool BIsSteamController(EControllerType eType)
Definition: controller_type.h:67
SDL_JOYSTICK_TYPE_GUITAR
@ SDL_JOYSTICK_TYPE_GUITAR
Definition: SDL_joystick.h:91
SDL_UnlockJoysticks
void SDL_UnlockJoysticks(void)
Definition: SDL_joystick.c:95
SDL_JoystickGUID::data
Uint8 data[16]
Definition: SDL_joystick.h:71
SDL_JOYDEVICEREMOVED
@ SDL_JOYDEVICEREMOVED
Definition: SDL_events.h:117
SDL_strncmp
#define SDL_strncmp
Definition: SDL_dynapi_overrides.h:418
x1
GLuint GLfloat GLfloat GLfloat x1
Definition: SDL_opengl_glext.h:8583
SDL_RELEASED
#define SDL_RELEASED
Definition: SDL_events.h:49
SDL_JoystickGetDeviceInstanceID
SDL_JoystickID SDL_JoystickGetDeviceInstanceID(int device_index)
Definition: SDL_joystick.c:1420
SDL_InitSubSystem
#define SDL_InitSubSystem
Definition: SDL_dynapi_overrides.h:55
SDL_ShouldIgnoreGameController
SDL_bool SDL_ShouldIgnoreGameController(const char *name, SDL_JoystickGUID guid)
Definition: SDL_gamecontroller.c:1460
SDL_JOYSTICK_TYPE_DANCE_PAD
@ SDL_JOYSTICK_TYPE_DANCE_PAD
Definition: SDL_joystick.h:90
SDL_JoystickGetVendor
Uint16 SDL_JoystickGetVendor(SDL_Joystick *joystick)
Definition: SDL_joystick.c:1461
SDL_stack_alloc
#define SDL_stack_alloc(type, count)
Definition: SDL_stdinc.h:354
SDL_GetKeyboardFocus
#define SDL_GetKeyboardFocus
Definition: SDL_dynapi_overrides.h:216
SDL_strcasecmp
#define SDL_strcasecmp
Definition: SDL_dynapi_overrides.h:419
SDL_PrivateJoystickAxis
int SDL_PrivateJoystickAxis(SDL_Joystick *joystick, Uint8 axis, Sint16 value)
Definition: SDL_joystick.c:828
k_eControllerType_PS4Controller
@ k_eControllerType_PS4Controller
Definition: controller_type.h:50
SDL_JoystickGetGUID
SDL_JoystickGUID SDL_JoystickGetGUID(SDL_Joystick *joystick)
Definition: SDL_joystick.c:1451
SDL_JoystickDriver::GetCount
int(* GetCount)(void)
Definition: SDL_sysjoystick.h:101
SDL_JOYSTICK_TYPE_DRUM_KIT
@ SDL_JOYSTICK_TYPE_DRUM_KIT
Definition: SDL_joystick.h:92
SDL_QUERY
#define SDL_QUERY
Definition: SDL_events.h:753
SDL_PRESSED
#define SDL_PRESSED
Definition: SDL_events.h:50
Sint16
int16_t Sint16
Definition: SDL_stdinc.h:185
len
GLenum GLsizei len
Definition: SDL_opengl_glext.h:2926
event
struct _cl_event * event
Definition: SDL_opengl_glext.h:2649
SDL_GameControllerHandleDelayedGuideButton
void SDL_GameControllerHandleDelayedGuideButton(SDL_Joystick *joystick)
Definition: SDL_gamecontroller.c:2063
p
GLfloat GLfloat p
Definition: SDL_opengl_glext.h:11090
retval
SDL_bool retval
Definition: testgamecontroller.c:65
SDL_IsJoystickXInput
SDL_bool SDL_IsJoystickXInput(SDL_JoystickGUID guid)
Definition: SDL_joystick.c:1186
SDL_JoystickDriver::Update
void(* Update)(SDL_Joystick *joystick)
Definition: SDL_sysjoystick.h:133
SDL_GetEventState
#define SDL_GetEventState(type)
Definition: SDL_events.h:769
k_eControllerType_XBox360Controller
@ k_eControllerType_XBox360Controller
Definition: controller_type.h:47
SDL_JOYSTICK_POWER_UNKNOWN
@ SDL_JOYSTICK_POWER_UNKNOWN
Definition: SDL_joystick.h:99
SDL_PrivateJoystickValid
int SDL_PrivateJoystickValid(SDL_Joystick *joystick)
Definition: SDL_joystick.c:394
SDL_GetJoystickGUIDInfo
void SDL_GetJoystickGUIDInfo(SDL_JoystickGUID guid, Uint16 *vendor, Uint16 *product, Uint16 *version)
Definition: SDL_joystick.c:1113
SDL_GetJoystickGUIDType
static SDL_JoystickType SDL_GetJoystickGUIDType(SDL_JoystickGUID guid)
Definition: SDL_joystick.c:1256
SDL_free
#define SDL_free
Definition: SDL_dynapi_overrides.h:377
SDL_updating_joystick
static SDL_bool SDL_updating_joystick
Definition: SDL_joystick.c:82
SDL_JOYSTICK_TYPE_FLIGHT_STICK
@ SDL_JOYSTICK_TYPE_FLIGHT_STICK
Definition: SDL_joystick.h:89
UpdateEventsForDeviceRemoval
static void UpdateEventsForDeviceRemoval()
Definition: SDL_joystick.c:776
SDL_PushEvent
#define SDL_PushEvent
Definition: SDL_dynapi_overrides.h:125
SDL_PrivateJoystickShouldIgnoreEvent
static SDL_bool SDL_PrivateJoystickShouldIgnoreEvent()
Definition: SDL_joystick.c:736
SDL_JoystickDriver::Quit
void(* Quit)(void)
Definition: SDL_sysjoystick.h:139
name
GLuint const GLchar * name
Definition: SDL_opengl_glext.h:660
SDL_JoystickAxisInfo
Definition: SDL_sysjoystick.h:33
SDL_PrivateJoystickButton
int SDL_PrivateJoystickButton(SDL_Joystick *joystick, Uint8 button, Uint8 state)
Definition: SDL_joystick.c:961
SDL_JOYSTICK_TYPE_THROTTLE
@ SDL_JOYSTICK_TYPE_THROTTLE
Definition: SDL_joystick.h:94
SDL_GameControllerInitMappings
int SDL_GameControllerInitMappings(void)
Definition: SDL_gamecontroller.c:1329
SDL_PeepEvents
#define SDL_PeepEvents
Definition: SDL_dynapi_overrides.h:117
nibble
static unsigned char nibble(char c)
Definition: SDL_joystick.c:1528
SDL_GetDriverAndJoystickIndex
SDL_bool SDL_GetDriverAndJoystickIndex(int device_index, SDL_JoystickDriver **driver, int *driver_index)
Definition: SDL_joystick.c:173
GuessControllerType
static EControllerType GuessControllerType(int nVID, int nPID)
Definition: controller_type.h:410
MAKE_VIDPID
#define MAKE_VIDPID(VID, PID)
Definition: SDL_sysjoystick.h:90
SDL_JOYAXISMOTION
@ SDL_JOYAXISMOTION
Definition: SDL_events.h:111
SDL_next_joystick_instance_id
static SDL_atomic_t SDL_next_joystick_instance_id
Definition: SDL_joystick.c:84
SDL_JoystickAllowBackgroundEventsChanged
static void SDL_JoystickAllowBackgroundEventsChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
Definition: SDL_joystick.c:104
SDL_JoyDeviceEvent::which
Sint32 which
Definition: SDL_events.h:370
SDL_JoystickGetProduct
Uint16 SDL_JoystickGetProduct(SDL_Joystick *joystick)
Definition: SDL_joystick.c:1470
SDL_TRUE
@ SDL_TRUE
Definition: SDL_stdinc.h:164
SDL_joystick_lock
static SDL_mutex * SDL_joystick_lock
Definition: SDL_joystick.c:83
SDL_JOYSTICK_AXIS_MAX
#define SDL_JOYSTICK_AXIS_MAX
Definition: SDL_joystick.h:301
k_eControllerType_UnknownNonSteamController
@ k_eControllerType_UnknownNonSteamController
Definition: controller_type.h:46
SDL_LockJoysticks
void SDL_LockJoysticks(void)
Definition: SDL_joystick.c:87
SDL_assert
#define SDL_assert(condition)
Definition: SDL_assert.h:169
SDL_joystick_drivers
static SDL_JoystickDriver * SDL_joystick_drivers[]
Definition: SDL_joystick.c:48
SDL_DISABLE
#define SDL_DISABLE
Definition: SDL_events.h:755
axis
SDL_Texture * axis
Definition: testgamecontroller.c:67
SDL_JoystickDriver
Definition: SDL_sysjoystick.h:93
SDL_OutOfMemory
#define SDL_OutOfMemory()
Definition: SDL_error.h:52
SDL_PrivateJoystickHat
int SDL_PrivateJoystickHat(SDL_Joystick *joystick, Uint8 hat, Uint8 value)
Definition: SDL_joystick.c:885
SDL_IsJoystickProductWheel
static SDL_bool SDL_IsJoystickProductWheel(Uint32 vidpid)
Definition: SDL_joystick.c:1197
SDL_arraysize
#define SDL_arraysize(array)
Definition: SDL_stdinc.h:115
SDL_calloc
#define SDL_calloc
Definition: SDL_dynapi_overrides.h:375
SDL_GameControllerQuitMappings
void SDL_GameControllerQuitMappings(void)
Definition: SDL_gamecontroller.c:1917
events
static SDL_Event events[EVENT_BUF_SIZE]
Definition: testgesture.c:35
SDL_IsJoystickProductFlightStick
static SDL_bool SDL_IsJoystickProductFlightStick(Uint32 vidpid)
Definition: SDL_joystick.c:1224
SDL_AddHintCallback
#define SDL_AddHintCallback
Definition: SDL_dynapi_overrides.h:192
SDL_JoystickDriver::GetDeviceName
const char *(* GetDeviceName)(int device_index)
Definition: SDL_sysjoystick.h:107
SDL_stack_free
#define SDL_stack_free(data)
Definition: SDL_stdinc.h:355
SDL_JoystickClose
void SDL_JoystickClose(SDL_Joystick *joystick)
Definition: SDL_joystick.c:643
value
GLsizei const GLfloat * value
Definition: SDL_opengl_glext.h:698
SDL_SetError
#define SDL_SetError
Definition: SDL_dynapi_overrides.h:30
SDL_IsGameControllerNameAndGUID
SDL_bool SDL_IsGameControllerNameAndGUID(const char *name, SDL_JoystickGUID guid)
Definition: SDL_gamecontroller.c:1435
SDL_JOYBUTTONUP
@ SDL_JOYBUTTONUP
Definition: SDL_events.h:115
SDL_DestroyMutex
#define SDL_DestroyMutex
Definition: SDL_dynapi_overrides.h:263
SDL_HasWindows
SDL_bool SDL_HasWindows(void)
Definition: SDL_video.c:1707
SDL_JOYSTICK_TYPE_ARCADE_PAD
@ SDL_JOYSTICK_TYPE_ARCADE_PAD
Definition: SDL_joystick.h:93
SDL_GETEVENT
@ SDL_GETEVENT
Definition: SDL_events.h:614
SDL_EventState
#define SDL_EventState
Definition: SDL_dynapi_overrides.h:131
SDL_strdup
#define SDL_strdup
Definition: SDL_dynapi_overrides.h:397
SDL_joysticks
static SDL_Joystick * SDL_joysticks
Definition: SDL_joystick.c:81
SDL_strlen
#define SDL_strlen
Definition: SDL_dynapi_overrides.h:393
SDL_JOYDEVICEADDED
@ SDL_JOYDEVICEADDED
Definition: SDL_events.h:116
SDL_JoystickDriver::GetDeviceGUID
SDL_JoystickGUID(* GetDeviceGUID)(int device_index)
Definition: SDL_sysjoystick.h:113
SDL_bool
SDL_bool
Definition: SDL_stdinc.h:162
SDL_IsJoystickProductThrottle
static SDL_bool SDL_IsJoystickProductThrottle(Uint32 vidpid)
Definition: SDL_joystick.c:1240
SDL_Event
General event structure.
Definition: SDL_events.h:558
SDL_DelHintCallback
#define SDL_DelHintCallback
Definition: SDL_dynapi_overrides.h:193
SDL_FALSE
@ SDL_FALSE
Definition: SDL_stdinc.h:163
SDL_JoystickGetDeviceGUID
SDL_JoystickGUID SDL_JoystickGetDeviceGUID(int device_index)
Definition: SDL_joystick.c:1363
SDL_JOYBUTTONDOWN
@ SDL_JOYBUTTONDOWN
Definition: SDL_events.h:114
SDL_UnlockMutex
#define SDL_UnlockMutex
Definition: SDL_dynapi_overrides.h:262
SDL_JoystickGUID
Definition: SDL_joystick.h:70
SDL_JoystickDriver::GetDevicePlayerIndex
int(* GetDevicePlayerIndex)(int device_index)
Definition: SDL_sysjoystick.h:110
SDL_JOYSTICK_TYPE_WHEEL
@ SDL_JOYSTICK_TYPE_WHEEL
Definition: SDL_joystick.h:87
type
GLuint GLuint GLsizei GLenum type
Definition: SDL_opengl.h:1571
state
struct xkb_state * state
Definition: SDL_waylandsym.h:113
i
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_JOYHATMOTION
@ SDL_JOYHATMOTION
Definition: SDL_events.h:113
SDL_JOYSTICK_TYPE_UNKNOWN
@ SDL_JOYSTICK_TYPE_UNKNOWN
Definition: SDL_joystick.h:85
button
SDL_Texture * button
Definition: testgamecontroller.c:67
k_eControllerType_XBoxOneController
@ k_eControllerType_XBoxOneController
Definition: controller_type.h:48
SDL_JOYBALLMOTION
@ SDL_JOYBALLMOTION
Definition: SDL_events.h:112
SDL_PEEKEVENT
@ SDL_PEEKEVENT
Definition: SDL_events.h:613
SDL_JoystickType
SDL_JoystickType
Definition: SDL_joystick.h:84
SDL_JOYSTICK_TYPE_ARCADE_STICK
@ SDL_JOYSTICK_TYPE_ARCADE_STICK
Definition: SDL_joystick.h:88