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* Adjustment: Update libsdl to address a bug in compilation on MacOS devices.

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This commit is contained in:
Robert MacGregor 2022-05-21 20:25:30 -04:00
parent 516163fd5d
commit eab544c8f3
270 changed files with 9531 additions and 3704 deletions
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433
Engine/lib/sdl/src/joystick/linux/SDL_sysjoystick.c
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@ -82,6 +82,10 @@
#define DEBUG_INPUT_EVENTS 1
#endif
#if 0
#define DEBUG_GAMEPAD_MAPPING 1
#endif
typedef enum
{
ENUMERATION_UNSET,
@ -493,21 +497,6 @@ static void SteamControllerDisconnectedCallback(int device_instance)
}
}
#ifdef HAVE_INOTIFY
#ifdef HAVE_INOTIFY_INIT1
static int SDL_inotify_init1(void) {
return inotify_init1(IN_NONBLOCK | IN_CLOEXEC);
}
#else
static int SDL_inotify_init1(void) {
int fd = inotify_init();
if (fd < 0) return -1;
fcntl(fd, F_SETFL, O_NONBLOCK);
fcntl(fd, F_SETFD, FD_CLOEXEC);
return fd;
}
#endif
static int
StrHasPrefix(const char *string, const char *prefix)
{
@ -562,6 +551,21 @@ IsJoystickDeviceNode(const char *node)
}
}
#ifdef HAVE_INOTIFY
#ifdef HAVE_INOTIFY_INIT1
static int SDL_inotify_init1(void) {
return inotify_init1(IN_NONBLOCK | IN_CLOEXEC);
}
#else
static int SDL_inotify_init1(void) {
int fd = inotify_init();
if (fd < 0) return -1;
fcntl(fd, F_SETFL, O_NONBLOCK);
fcntl(fd, F_SETFD, FD_CLOEXEC);
return fd;
}
#endif
static void
LINUX_InotifyJoystickDetect(void)
{
@ -854,13 +858,18 @@ JoystickByDevIndex(int device_index)
return item;
}
/* Function to get the device-dependent name of a joystick */
static const char *
LINUX_JoystickGetDeviceName(int device_index)
{
return JoystickByDevIndex(device_index)->name;
}
static const char *
LINUX_JoystickGetDevicePath(int device_index)
{
return JoystickByDevIndex(device_index)->path;
}
static int
LINUX_JoystickGetDevicePlayerIndex(int device_index)
{
@ -921,6 +930,37 @@ allocate_balldata(SDL_Joystick *joystick)
return (0);
}
static SDL_bool
GuessIfAxesAreDigitalHat(struct input_absinfo *absinfo_x, struct input_absinfo *absinfo_y)
{
/* A "hat" is assumed to be a digital input with at most 9 possible states
* (3 per axis: negative/zero/positive), as opposed to a true "axis" which
* can report a continuous range of possible values. Unfortunately the Linux
* joystick interface makes no distinction between digital hat axes and any
* other continuous analog axis, so we have to guess. */
/* If both axes are missing, they're not anything. */
if (!absinfo_x && !absinfo_y)
return SDL_FALSE;
/* If the hint says so, treat all hats as digital. */
if (SDL_GetHintBoolean(SDL_HINT_LINUX_DIGITAL_HATS, SDL_FALSE))
return SDL_TRUE;
/* If both axes have ranges constrained between -1 and 1, they're definitely digital. */
if ((!absinfo_x || (absinfo_x->minimum == -1 && absinfo_x->maximum == 1)) &&
(!absinfo_y || (absinfo_y->minimum == -1 && absinfo_y->maximum == 1)))
return SDL_TRUE;
/* If both axes lack fuzz, flat, and resolution values, they're probably digital. */
if ((!absinfo_x || (!absinfo_x->fuzz && !absinfo_x->flat && !absinfo_x->resolution)) &&
(!absinfo_y || (!absinfo_y->fuzz && !absinfo_y->flat && !absinfo_y->resolution)))
return SDL_TRUE;
/* Otherwise, treat them as analog. */
return SDL_FALSE;
}
static void
ConfigJoystick(SDL_Joystick *joystick, int fd)
{
@ -931,6 +971,7 @@ ConfigJoystick(SDL_Joystick *joystick, int fd)
unsigned long ffbit[NBITS(FF_MAX)] = { 0 };
Uint8 key_pam_size, abs_pam_size;
SDL_bool use_deadzones = SDL_GetHintBoolean(SDL_HINT_LINUX_JOYSTICK_DEADZONES, SDL_FALSE);
SDL_bool use_hat_deadzones = SDL_GetHintBoolean(SDL_HINT_LINUX_HAT_DEADZONES, SDL_TRUE);
/* See if this device uses the new unified event API */
if ((ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybit)), keybit) >= 0) &&
@ -958,10 +999,45 @@ ConfigJoystick(SDL_Joystick *joystick, int fd)
++joystick->nbuttons;
}
}
for (i = ABS_HAT0X; i <= ABS_HAT3Y; i += 2) {
int hat_x = -1;
int hat_y = -1;
struct input_absinfo absinfo_x;
struct input_absinfo absinfo_y;
if (test_bit(i, absbit))
hat_x = ioctl(fd, EVIOCGABS(i), &absinfo_x);
if (test_bit(i + 1, absbit))
hat_y = ioctl(fd, EVIOCGABS(i + 1), &absinfo_y);
if (GuessIfAxesAreDigitalHat((hat_x < 0 ? (void*)0 : &absinfo_x),
(hat_y < 0 ? (void*)0 : &absinfo_y))) {
const int hat_index = (i - ABS_HAT0X) / 2;
struct hat_axis_correct *correct = &joystick->hwdata->hat_correct[hat_index];
#ifdef DEBUG_INPUT_EVENTS
SDL_Log("Joystick has digital hat: #%d\n", hat_index);
if (hat_x >= 0) {
SDL_Log("X Values = { val:%d, min:%d, max:%d, fuzz:%d, flat:%d, res:%d }\n",
absinfo_x.value, absinfo_x.minimum, absinfo_x.maximum,
absinfo_x.fuzz, absinfo_x.flat, absinfo_x.resolution);
}
if (hat_y >= 0) {
SDL_Log("Y Values = { val:%d, min:%d, max:%d, fuzz:%d, flat:%d, res:%d }\n",
absinfo_y.value, absinfo_y.minimum, absinfo_y.maximum,
absinfo_y.fuzz, absinfo_y.flat, absinfo_y.resolution);
}
#endif /* DEBUG_INPUT_EVENTS */
joystick->hwdata->hats_indices[hat_index] = joystick->nhats;
joystick->hwdata->has_hat[hat_index] = SDL_TRUE;
correct->use_deadzones = use_hat_deadzones;
correct->minimum[0] = (hat_x < 0) ? -1 : absinfo_x.minimum;
correct->maximum[0] = (hat_x < 0) ? 1 : absinfo_x.maximum;
correct->minimum[1] = (hat_y < 0) ? -1 : absinfo_y.minimum;
correct->maximum[1] = (hat_y < 0) ? 1 : absinfo_y.maximum;
++joystick->nhats;
}
}
for (i = 0; i < ABS_MAX; ++i) {
/* Skip hats */
if (i == ABS_HAT0X) {
i = ABS_HAT3Y;
/* Skip digital hats */
if (joystick->hwdata->has_hat[(i - ABS_HAT0X) / 2]) {
continue;
}
if (test_bit(i, absbit)) {
@ -973,9 +1049,9 @@ ConfigJoystick(SDL_Joystick *joystick, int fd)
}
#ifdef DEBUG_INPUT_EVENTS
SDL_Log("Joystick has absolute axis: 0x%.2x\n", i);
SDL_Log("Values = { %d, %d, %d, %d, %d }\n",
SDL_Log("Values = { val:%d, min:%d, max:%d, fuzz:%d, flat:%d, res:%d }\n",
absinfo.value, absinfo.minimum, absinfo.maximum,
absinfo.fuzz, absinfo.flat);
absinfo.fuzz, absinfo.flat, absinfo.resolution);
#endif /* DEBUG_INPUT_EVENTS */
joystick->hwdata->abs_map[i] = joystick->naxes;
joystick->hwdata->has_abs[i] = SDL_TRUE;
@ -1003,24 +1079,6 @@ ConfigJoystick(SDL_Joystick *joystick, int fd)
++joystick->naxes;
}
}
for (i = ABS_HAT0X; i <= ABS_HAT3Y; i += 2) {
if (test_bit(i, absbit) || test_bit(i + 1, absbit)) {
struct input_absinfo absinfo;
int hat_index = (i - ABS_HAT0X) / 2;
if (ioctl(fd, EVIOCGABS(i), &absinfo) < 0) {
continue;
}
#ifdef DEBUG_INPUT_EVENTS
SDL_Log("Joystick has hat %d\n", hat_index);
SDL_Log("Values = { %d, %d, %d, %d, %d }\n",
absinfo.value, absinfo.minimum, absinfo.maximum,
absinfo.fuzz, absinfo.flat);
#endif /* DEBUG_INPUT_EVENTS */
joystick->hwdata->hats_indices[hat_index] = joystick->nhats++;
joystick->hwdata->has_hat[hat_index] = SDL_TRUE;
}
}
if (test_bit(REL_X, relbit) || test_bit(REL_Y, relbit)) {
++joystick->nballs;
}
@ -1066,14 +1124,19 @@ ConfigJoystick(SDL_Joystick *joystick, int fd)
for (i = 0; i < abs_pam_size; ++i) {
Uint8 code = joystick->hwdata->abs_pam[i];
// TODO: is there any way to detect analog hats in advance via this API?
if (code >= ABS_HAT0X && code <= ABS_HAT3Y) {
int hat_index = (code - ABS_HAT0X) / 2;
if (!joystick->hwdata->has_hat[hat_index]) {
#ifdef DEBUG_INPUT_EVENTS
SDL_Log("Joystick has hat %d\n", hat_index);
SDL_Log("Joystick has digital hat: #%d\n", hat_index);
#endif
joystick->hwdata->hats_indices[hat_index] = joystick->nhats++;
joystick->hwdata->has_hat[hat_index] = SDL_TRUE;
joystick->hwdata->hat_correct[hat_index].minimum[0] = -1;
joystick->hwdata->hat_correct[hat_index].maximum[0] = 1;
joystick->hwdata->hat_correct[hat_index].minimum[1] = -1;
joystick->hwdata->hat_correct[hat_index].maximum[1] = 1;
}
} else {
#ifdef DEBUG_INPUT_EVENTS
@ -1272,26 +1335,48 @@ LINUX_JoystickSetSensorsEnabled(SDL_Joystick *joystick, SDL_bool enabled)
}
static void
HandleHat(SDL_Joystick *stick, Uint8 hat, int axis, int value)
HandleHat(SDL_Joystick *stick, int hatidx, int axis, int value)
{
const int hatnum = stick->hwdata->hats_indices[hatidx];
struct hwdata_hat *the_hat;
struct hat_axis_correct *correct;
const Uint8 position_map[3][3] = {
{SDL_HAT_LEFTUP, SDL_HAT_UP, SDL_HAT_RIGHTUP},
{SDL_HAT_LEFT, SDL_HAT_CENTERED, SDL_HAT_RIGHT},
{SDL_HAT_LEFTDOWN, SDL_HAT_DOWN, SDL_HAT_RIGHTDOWN}
};
the_hat = &stick->hwdata->hats[hat];
the_hat = &stick->hwdata->hats[hatnum];
correct = &stick->hwdata->hat_correct[hatidx];
/* Hopefully we detected any analog axes and left them as is rather than trying
* to use them as digital hats, but just in case, the deadzones here will
* prevent the slightest of twitches on an analog axis from registering as a hat
* movement. If the axes really are digital, this won't hurt since they should
* only ever be sending min, 0, or max anyway. */
if (value < 0) {
value = 0;
} else if (value == 0) {
value = 1;
if (value <= correct->minimum[axis]) {
correct->minimum[axis] = value;
value = 0;
} else if (!correct->use_deadzones || value < correct->minimum[axis] / 3) {
value = 0;
} else {
value = 1;
}
} else if (value > 0) {
value = 2;
if (value >= correct->maximum[axis]) {
correct->maximum[axis] = value;
value = 2;
} else if (!correct->use_deadzones || value > correct->maximum[axis] / 3) {
value = 2;
} else {
value = 1;
}
} else { // value == 0
value = 1;
}
if (value != the_hat->axis[axis]) {
the_hat->axis[axis] = value;
SDL_PrivateJoystickHat(stick, hat,
SDL_PrivateJoystickHat(stick, hatnum,
position_map[the_hat->axis[1]][the_hat->axis[0]]);
}
}
@ -1346,10 +1431,7 @@ PollAllValues(SDL_Joystick *joystick)
/* Poll all axis */
for (i = ABS_X; i < ABS_MAX; i++) {
if (i == ABS_HAT0X) { /* we handle hats in the next loop, skip them for now. */
i = ABS_HAT3Y;
continue;
}
/* We don't need to test for digital hats here, they won't have has_abs[] set */
if (joystick->hwdata->has_abs[i]) {
if (ioctl(joystick->hwdata->fd, EVIOCGABS(i), &absinfo) >= 0) {
absinfo.value = AxisCorrect(joystick, i, absinfo.value);
@ -1365,15 +1447,16 @@ PollAllValues(SDL_Joystick *joystick)
}
}
/* Poll all hats */
/* Poll all digital hats */
for (i = ABS_HAT0X; i <= ABS_HAT3Y; i++) {
const int baseaxis = i - ABS_HAT0X;
const int hatidx = baseaxis / 2;
SDL_assert(hatidx < SDL_arraysize(joystick->hwdata->has_hat));
/* We don't need to test for analog axes here, they won't have has_hat[] set */
if (joystick->hwdata->has_hat[hatidx]) {
if (ioctl(joystick->hwdata->fd, EVIOCGABS(i), &absinfo) >= 0) {
const int hataxis = baseaxis % 2;
HandleHat(joystick, joystick->hwdata->hats_indices[hatidx], hataxis, absinfo.value);
HandleHat(joystick, hatidx, hataxis, absinfo.value);
}
}
}
@ -1401,7 +1484,7 @@ static void
HandleInputEvents(SDL_Joystick *joystick)
{
struct input_event events[32];
int i, len, code;
int i, len, code, hat_index;
if (joystick->hwdata->fresh) {
PollAllValues(joystick);
@ -1436,9 +1519,11 @@ HandleInputEvents(SDL_Joystick *joystick)
case ABS_HAT2Y:
case ABS_HAT3X:
case ABS_HAT3Y:
code -= ABS_HAT0X;
HandleHat(joystick, joystick->hwdata->hats_indices[code / 2], code % 2, events[i].value);
break;
hat_index = (code - ABS_HAT0X) / 2;
if (joystick->hwdata->has_hat[hat_index]) {
HandleHat(joystick, hat_index, code % 2, events[i].value);
break;
}
default:
events[i].value = AxisCorrect(joystick, code, events[i].value);
SDL_PrivateJoystickAxis(joystick,
@ -1491,7 +1576,7 @@ static void
HandleClassicEvents(SDL_Joystick *joystick)
{
struct js_event events[32];
int i, len, code;
int i, len, code, hat_index;
joystick->hwdata->fresh = SDL_FALSE;
while ((len = read(joystick->hwdata->fd, events, (sizeof events))) > 0) {
@ -1515,9 +1600,11 @@ HandleClassicEvents(SDL_Joystick *joystick)
case ABS_HAT2Y:
case ABS_HAT3X:
case ABS_HAT3Y:
code -= ABS_HAT0X;
HandleHat(joystick, joystick->hwdata->hats_indices[code / 2], code % 2, events[i].value);
break;
hat_index = (code - ABS_HAT0X) / 2;
if (joystick->hwdata->has_hat[hat_index]) {
HandleHat(joystick, hat_index, code % 2, events[i].value);
break;
}
default:
SDL_PrivateJoystickAxis(joystick,
joystick->hwdata->abs_map[code],
@ -1623,10 +1710,14 @@ LINUX_JoystickGetGamepadMapping(int device_index, SDL_GamepadMapping *out)
{
SDL_Joystick *joystick;
SDL_joylist_item *item = JoystickByDevIndex(device_index);
unsigned int mapped;
if (item->checked_mapping) {
if (item->mapping) {
SDL_memcpy(out, item->mapping, sizeof(*out));
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Prior mapping for device %d", device_index);
#endif
return SDL_TRUE;
} else {
return SDL_FALSE;
@ -1674,11 +1765,17 @@ LINUX_JoystickGetGamepadMapping(int device_index, SDL_GamepadMapping *out)
if (joystick->hwdata->has_key[BTN_A]) {
out->a.kind = EMappingKind_Button;
out->a.target = joystick->hwdata->key_map[BTN_A];
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped A to button %d (BTN_A)", out->a.target);
#endif
}
if (joystick->hwdata->has_key[BTN_B]) {
out->b.kind = EMappingKind_Button;
out->b.target = joystick->hwdata->key_map[BTN_B];
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped B to button %d (BTN_B)", out->b.target);
#endif
}
/* Xbox controllers use BTN_X and BTN_Y, and PS4 controllers use BTN_WEST and BTN_NORTH */
@ -1686,47 +1783,74 @@ LINUX_JoystickGetGamepadMapping(int device_index, SDL_GamepadMapping *out)
if (joystick->hwdata->has_key[BTN_WEST]) {
out->x.kind = EMappingKind_Button;
out->x.target = joystick->hwdata->key_map[BTN_WEST];
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped X to button %d (BTN_WEST)", out->x.target);
#endif
}
if (joystick->hwdata->has_key[BTN_NORTH]) {
out->y.kind = EMappingKind_Button;
out->y.target = joystick->hwdata->key_map[BTN_NORTH];
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped Y to button %d (BTN_NORTH)", out->y.target);
#endif
}
} else {
if (joystick->hwdata->has_key[BTN_X]) {
out->x.kind = EMappingKind_Button;
out->x.target = joystick->hwdata->key_map[BTN_X];
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped X to button %d (BTN_X)", out->x.target);
#endif
}
if (joystick->hwdata->has_key[BTN_Y]) {
out->y.kind = EMappingKind_Button;
out->y.target = joystick->hwdata->key_map[BTN_Y];
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped Y to button %d (BTN_Y)", out->y.target);
#endif
}
}
if (joystick->hwdata->has_key[BTN_SELECT]) {
out->back.kind = EMappingKind_Button;
out->back.target = joystick->hwdata->key_map[BTN_SELECT];
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped BACK to button %d (BTN_SELECT)", out->back.target);
#endif
}
if (joystick->hwdata->has_key[BTN_START]) {
out->start.kind = EMappingKind_Button;
out->start.target = joystick->hwdata->key_map[BTN_START];
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped START to button %d (BTN_START)", out->start.target);
#endif
}
if (joystick->hwdata->has_key[BTN_THUMBL]) {
out->leftstick.kind = EMappingKind_Button;
out->leftstick.target = joystick->hwdata->key_map[BTN_THUMBL];
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped LEFTSTICK to button %d (BTN_THUMBL)", out->leftstick.target);
#endif
}
if (joystick->hwdata->has_key[BTN_THUMBR]) {
out->rightstick.kind = EMappingKind_Button;
out->rightstick.target = joystick->hwdata->key_map[BTN_THUMBR];
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped RIGHTSTICK to button %d (BTN_THUMBR)", out->rightstick.target);
#endif
}
if (joystick->hwdata->has_key[BTN_MODE]) {
out->guide.kind = EMappingKind_Button;
out->guide.target = joystick->hwdata->key_map[BTN_MODE];
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped GUIDE to button %d (BTN_MODE)", out->guide.target);
#endif
}
/*
@ -1734,84 +1858,191 @@ LINUX_JoystickGetGamepadMapping(int device_index, SDL_GamepadMapping *out)
can be digital, or analog, or both at the same time.
*/
/* Prefer digital shoulder buttons, but settle for analog if missing. */
/* Prefer digital shoulder buttons, but settle for digital or analog hat. */
mapped = 0;
if (joystick->hwdata->has_key[BTN_TL]) {
out->leftshoulder.kind = EMappingKind_Button;
out->leftshoulder.target = joystick->hwdata->key_map[BTN_TL];
mapped |= 0x1;
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped LEFTSHOULDER to button %d (BTN_TL)", out->leftshoulder.target);
#endif
}
if (joystick->hwdata->has_key[BTN_TR]) {
out->rightshoulder.kind = EMappingKind_Button;
out->rightshoulder.target = joystick->hwdata->key_map[BTN_TR];
mapped |= 0x2;
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped RIGHTSHOULDER to button %d (BTN_TR)", out->rightshoulder.target);
#endif
}
if (joystick->hwdata->has_hat[1] && /* Check if ABS_HAT1{X, Y} is available. */
(!joystick->hwdata->has_key[BTN_TL] || !joystick->hwdata->has_key[BTN_TR])) {
if (mapped != 0x3 && joystick->hwdata->has_hat[1]) {
int hat = joystick->hwdata->hats_indices[1] << 4;
out->leftshoulder.kind = EMappingKind_Hat;
out->rightshoulder.kind = EMappingKind_Hat;
out->leftshoulder.target = hat | 0x4;
out->rightshoulder.target = hat | 0x2;
mapped |= 0x3;
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped LEFT+RIGHTSHOULDER to hat 1 (ABS_HAT1X, ABS_HAT1Y)");
#endif
}
/* Prefer analog triggers, but settle for digital if missing. */
if (joystick->hwdata->has_hat[2]) { /* Check if ABS_HAT2{X,Y} is available. */
if (!(mapped & 0x1) && joystick->hwdata->has_abs[ABS_HAT1Y]) {
out->leftshoulder.kind = EMappingKind_Axis;
out->leftshoulder.target = joystick->hwdata->abs_map[ABS_HAT1Y];
mapped |= 0x1;
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped LEFTSHOULDER to axis %d (ABS_HAT1Y)", out->leftshoulder.target);
#endif
}
if (!(mapped & 0x2) && joystick->hwdata->has_abs[ABS_HAT1X]) {
out->rightshoulder.kind = EMappingKind_Axis;
out->rightshoulder.target = joystick->hwdata->abs_map[ABS_HAT1X];
mapped |= 0x2;
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped RIGHTSHOULDER to axis %d (ABS_HAT1X)", out->rightshoulder.target);
#endif
}
/* Prefer analog triggers, but settle for digital hat or buttons. */
mapped = 0;
if (joystick->hwdata->has_abs[ABS_HAT2Y]) {
out->lefttrigger.kind = EMappingKind_Axis;
out->lefttrigger.target = joystick->hwdata->abs_map[ABS_HAT2Y];
mapped |= 0x1;
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped LEFTTRIGGER to axis %d (ABS_HAT2Y)", out->lefttrigger.target);
#endif
} else if (joystick->hwdata->has_abs[ABS_Z]) {
out->lefttrigger.kind = EMappingKind_Axis;
out->lefttrigger.target = joystick->hwdata->abs_map[ABS_Z];
mapped |= 0x1;
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped LEFTTRIGGER to axis %d (ABS_Z)", out->lefttrigger.target);
#endif
}
if (joystick->hwdata->has_abs[ABS_HAT2X]) {
out->righttrigger.kind = EMappingKind_Axis;
out->righttrigger.target = joystick->hwdata->abs_map[ABS_HAT2X];
mapped |= 0x2;
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped RIGHTTRIGGER to axis %d (ABS_HAT2X)", out->righttrigger.target);
#endif
} else if (joystick->hwdata->has_abs[ABS_RZ]) {
out->righttrigger.kind = EMappingKind_Axis;
out->righttrigger.target = joystick->hwdata->abs_map[ABS_RZ];
mapped |= 0x2;
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped RIGHTTRIGGER to axis %d (ABS_RZ)", out->righttrigger.target);
#endif
}
if (mapped != 0x3 && joystick->hwdata->has_hat[2]) {
int hat = joystick->hwdata->hats_indices[2] << 4;
out->lefttrigger.kind = EMappingKind_Hat;
out->righttrigger.kind = EMappingKind_Hat;
out->lefttrigger.target = hat | 0x4;
out->righttrigger.target = hat | 0x2;
} else {
if (joystick->hwdata->has_abs[ABS_Z]) {
out->lefttrigger.kind = EMappingKind_Axis;
out->lefttrigger.target = joystick->hwdata->abs_map[ABS_Z];
} else if (joystick->hwdata->has_key[BTN_TL2]) {
out->lefttrigger.kind = EMappingKind_Button;
out->lefttrigger.target = joystick->hwdata->key_map[BTN_TL2];
}
if (joystick->hwdata->has_abs[ABS_RZ]) {
out->righttrigger.kind = EMappingKind_Axis;
out->righttrigger.target = joystick->hwdata->abs_map[ABS_RZ];
} else if (joystick->hwdata->has_key[BTN_TR2]) {
out->righttrigger.kind = EMappingKind_Button;
out->righttrigger.target = joystick->hwdata->key_map[BTN_TR2];
}
mapped |= 0x3;
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped LEFT+RIGHTTRIGGER to hat 2 (ABS_HAT2X, ABS_HAT2Y)");
#endif
}
/* Prefer digital D-Pad, but settle for analog if missing. */
if (!(mapped & 0x1) && joystick->hwdata->has_key[BTN_TL2]) {
out->lefttrigger.kind = EMappingKind_Button;
out->lefttrigger.target = joystick->hwdata->key_map[BTN_TL2];
mapped |= 0x1;
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped LEFTTRIGGER to button %d (BTN_TL2)", out->lefttrigger.target);
#endif
}
if (!(mapped & 0x2) && joystick->hwdata->has_key[BTN_TR2]) {
out->righttrigger.kind = EMappingKind_Button;
out->righttrigger.target = joystick->hwdata->key_map[BTN_TR2];
mapped |= 0x2;
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped RIGHTTRIGGER to button %d (BTN_TR2)", out->righttrigger.target);
#endif
}
/* Prefer digital D-Pad buttons, but settle for digital or analog hat. */
mapped = 0;
if (joystick->hwdata->has_key[BTN_DPAD_UP]) {
out->dpup.kind = EMappingKind_Button;
out->dpup.target = joystick->hwdata->key_map[BTN_DPAD_UP];
mapped |= 0x1;
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped DPUP to button %d (BTN_DPAD_UP)", out->dpup.target);
#endif
}
if (joystick->hwdata->has_key[BTN_DPAD_DOWN]) {
out->dpdown.kind = EMappingKind_Button;
out->dpdown.target = joystick->hwdata->key_map[BTN_DPAD_DOWN];
mapped |= 0x2;
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped DPDOWN to button %d (BTN_DPAD_DOWN)", out->dpdown.target);
#endif
}
if (joystick->hwdata->has_key[BTN_DPAD_LEFT]) {
out->dpleft.kind = EMappingKind_Button;
out->dpleft.target = joystick->hwdata->key_map[BTN_DPAD_LEFT];
mapped |= 0x4;
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped DPLEFT to button %d (BTN_DPAD_LEFT)", out->dpleft.target);
#endif
}
if (joystick->hwdata->has_key[BTN_DPAD_RIGHT]) {
out->dpright.kind = EMappingKind_Button;
out->dpright.target = joystick->hwdata->key_map[BTN_DPAD_RIGHT];
mapped |= 0x8;
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped DPRIGHT to button %d (BTN_DPAD_RIGHT)", out->dpright.target);
#endif
}
if (joystick->hwdata->has_hat[0] && /* Check if ABS_HAT0{X,Y} is available. */
(!joystick->hwdata->has_key[BTN_DPAD_LEFT] || !joystick->hwdata->has_key[BTN_DPAD_RIGHT] ||
!joystick->hwdata->has_key[BTN_DPAD_UP] || !joystick->hwdata->has_key[BTN_DPAD_DOWN])) {
int hat = joystick->hwdata->hats_indices[0] << 4;
out->dpleft.kind = EMappingKind_Hat;
out->dpright.kind = EMappingKind_Hat;
out->dpup.kind = EMappingKind_Hat;
out->dpdown.kind = EMappingKind_Hat;
out->dpleft.target = hat | 0x8;
out->dpright.target = hat | 0x2;
out->dpup.target = hat | 0x1;
out->dpdown.target = hat | 0x4;
if (mapped != 0xF) {
if (joystick->hwdata->has_hat[0]) {
int hat = joystick->hwdata->hats_indices[0] << 4;
out->dpleft.kind = EMappingKind_Hat;
out->dpright.kind = EMappingKind_Hat;
out->dpup.kind = EMappingKind_Hat;
out->dpdown.kind = EMappingKind_Hat;
out->dpleft.target = hat | 0x8;
out->dpright.target = hat | 0x2;
out->dpup.target = hat | 0x1;
out->dpdown.target = hat | 0x4;
mapped |= 0xF;
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped DPUP+DOWN+LEFT+RIGHT to hat 0 (ABS_HAT0X, ABS_HAT0Y)");
#endif
} else if (joystick->hwdata->has_abs[ABS_HAT0X] && joystick->hwdata->has_abs[ABS_HAT0Y]) {
out->dpleft.kind = EMappingKind_Axis;
out->dpright.kind = EMappingKind_Axis;
out->dpup.kind = EMappingKind_Axis;
out->dpdown.kind = EMappingKind_Axis;
out->dpleft.target = joystick->hwdata->abs_map[ABS_HAT0X];
out->dpright.target = joystick->hwdata->abs_map[ABS_HAT0X];
out->dpup.target = joystick->hwdata->abs_map[ABS_HAT0Y];
out->dpdown.target = joystick->hwdata->abs_map[ABS_HAT0Y];
mapped |= 0xF;
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped DPUP+DOWN to axis %d (ABS_HAT0Y)", out->dpup.target);
SDL_Log("Mapped DPLEFT+RIGHT to axis %d (ABS_HAT0X)", out->dpleft.target);
#endif
}
}
if (joystick->hwdata->has_abs[ABS_X] && joystick->hwdata->has_abs[ABS_Y]) {
@ -1819,6 +2050,10 @@ LINUX_JoystickGetGamepadMapping(int device_index, SDL_GamepadMapping *out)
out->lefty.kind = EMappingKind_Axis;
out->leftx.target = joystick->hwdata->abs_map[ABS_X];
out->lefty.target = joystick->hwdata->abs_map[ABS_Y];
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped LEFTX to axis %d (ABS_X)", out->leftx.target);
SDL_Log("Mapped LEFTY to axis %d (ABS_Y)", out->lefty.target);
#endif
}
if (joystick->hwdata->has_abs[ABS_RX] && joystick->hwdata->has_abs[ABS_RY]) {
@ -1826,6 +2061,10 @@ LINUX_JoystickGetGamepadMapping(int device_index, SDL_GamepadMapping *out)
out->righty.kind = EMappingKind_Axis;
out->rightx.target = joystick->hwdata->abs_map[ABS_RX];
out->righty.target = joystick->hwdata->abs_map[ABS_RY];
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped RIGHTX to axis %d (ABS_RX)", out->rightx.target);
SDL_Log("Mapped RIGHTY to axis %d (ABS_RY)", out->righty.target);
#endif
}
LINUX_JoystickClose(joystick);
@ -1836,6 +2075,9 @@ LINUX_JoystickGetGamepadMapping(int device_index, SDL_GamepadMapping *out)
if (item->mapping) {
SDL_memcpy(item->mapping, out, sizeof(*out));
}
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Generated mapping for device %d", device_index);
#endif
return SDL_TRUE;
}
@ -1846,6 +2088,7 @@ SDL_JoystickDriver SDL_LINUX_JoystickDriver =
LINUX_JoystickGetCount,
LINUX_JoystickDetect,
LINUX_JoystickGetDeviceName,
LINUX_JoystickGetDevicePath,
LINUX_JoystickGetDevicePlayerIndex,
LINUX_JoystickSetDevicePlayerIndex,
LINUX_JoystickGetDeviceGUID,

6
Engine/lib/sdl/src/joystick/linux/SDL_sysjoystick_c.h
View file

@ -83,6 +83,12 @@ struct joystick_hwdata
/* 4 = (ABS_HAT3X-ABS_HAT0X)/2 (see input-event-codes.h in kernel) */
int hats_indices[4];
SDL_bool has_hat[4];
struct hat_axis_correct
{
SDL_bool use_deadzones;
int minimum[2];
int maximum[2];
} hat_correct[4];
/* Set when gamepad is pending removal due to ENODEV read error */
SDL_bool gone;