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Added API for sensors on game controllers

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Added support for the PS4 controller gyro and accelerometer on iOS and HIDAPI drivers

Also fixed an issue with the accelerometer on iOS having inverted axes
This commit is contained in:
Sam Lantinga 2020-11-17 10:30:20 -08:00
parent b79e1baa36
commit fcb21aa883
33 changed files with 810 additions and 118 deletions
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56
src/joystick/SDL_joystick.c
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@ -1109,7 +1109,7 @@ SDL_PrivateJoystickShouldIgnoreEvent()
void SDL_PrivateJoystickAddTouchpad(SDL_Joystick *joystick, int nfingers)
{
int ntouchpads = joystick->ntouchpads + 1;
SDL_JoystickTouchpadInfo *touchpads = (SDL_JoystickTouchpadInfo *)SDL_realloc(joystick->touchpads, sizeof(SDL_JoystickTouchpadInfo));
SDL_JoystickTouchpadInfo *touchpads = (SDL_JoystickTouchpadInfo *)SDL_realloc(joystick->touchpads, (ntouchpads * sizeof(SDL_JoystickTouchpadInfo)));
if (touchpads) {
SDL_JoystickTouchpadInfo *touchpad = &touchpads[ntouchpads - 1];
SDL_JoystickTouchpadFingerInfo *fingers = (SDL_JoystickTouchpadFingerInfo *)SDL_calloc(nfingers, sizeof(SDL_JoystickTouchpadFingerInfo));
@ -1128,6 +1128,21 @@ void SDL_PrivateJoystickAddTouchpad(SDL_Joystick *joystick, int nfingers)
}
}
void SDL_PrivateJoystickAddSensor(SDL_Joystick *joystick, SDL_SensorType type)
{
int nsensors = joystick->nsensors + 1;
SDL_JoystickSensorInfo *sensors = (SDL_JoystickSensorInfo *)SDL_realloc(joystick->sensors, (nsensors * sizeof(SDL_JoystickSensorInfo)));
if (sensors) {
SDL_JoystickSensorInfo *sensor = &sensors[nsensors - 1];
SDL_zerop(sensor);
sensor->type = type;
joystick->nsensors = nsensors;
joystick->sensors = sensors;
}
}
void SDL_PrivateJoystickAdded(SDL_JoystickID device_instance)
{
SDL_JoystickDriver *driver;
@ -2463,8 +2478,8 @@ int SDL_PrivateJoystickTouchpad(SDL_Joystick *joystick, int touchpad, int finger
{
SDL_JoystickTouchpadInfo *touchpad_info;
SDL_JoystickTouchpadFingerInfo *finger_info;
#if !SDL_EVENTS_DISABLED
int posted;
#if !SDL_EVENTS_DISABLED
Uint32 event_type;
#endif
@ -2544,4 +2559,41 @@ int SDL_PrivateJoystickTouchpad(SDL_Joystick *joystick, int touchpad, int finger
return posted;
}
int SDL_PrivateJoystickSensor(SDL_Joystick *joystick, SDL_SensorType type, const float *data, int num_values)
{
int i;
int posted = 0;
for (i = 0; i < joystick->nsensors; ++i) {
SDL_JoystickSensorInfo *sensor = &joystick->sensors[i];
if (sensor->type == type) {
if (sensor->enabled) {
/* Allow duplicate events, for things like gyro updates */
/* Update internal sensor state */
num_values = SDL_min(num_values, SDL_arraysize(sensor->data));
SDL_memcpy(sensor->data, data, num_values*sizeof(*data));
/* Post the event, if desired */
posted = 0;
#if !SDL_EVENTS_DISABLED
if (SDL_GetEventState(SDL_CONTROLLERSENSORUPDATE) == SDL_ENABLE) {
SDL_Event event;
event.type = SDL_CONTROLLERSENSORUPDATE;
event.csensor.which = joystick->instance_id;
event.csensor.sensor = type;
num_values = SDL_min(num_values, SDL_arraysize(event.csensor.data));
SDL_memset(event.csensor.data, 0, sizeof(event.csensor.data));
SDL_memcpy(event.csensor.data, data, num_values*sizeof(*data));
posted = SDL_PushEvent(&event) == 1;
}
#endif /* !SDL_EVENTS_DISABLED */
}
break;
}
}
return posted;
}
/* vi: set ts=4 sw=4 expandtab: */