mirrors/SDL
1
0
Fork 0
mirror of https://github.com/libsdl-org/SDL.git synced 2025-09-26 13:08:29 +00:00
Code Issues Packages Projects Releases Wiki Activity

For gamepads that don't have their own sensors, try to use the system sensors.

Browse Source 
This allows using the gyro and accelerometer in handheld devices in conjunction with built-in or wraparound controllers.
This commit is contained in:
Sam Lantinga
2023-06-14 22:03:44 -07:00
parent d584592822
commit 42e4639a5e
8 changed files with 272 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

181
src/joystick/SDL_joystick.c
View File

@@ -31,6 +31,7 @@
#include "../events/SDL_events_c.h"
#endif
#include "../video/SDL_sysvideo.h"
#include "../sensor/SDL_sensor_c.h"
#include "hidapi/SDL_hidapijoystick_c.h"
/* This is included in only one place because it has a large static list of controllers */
@@ -510,6 +511,166 @@ static SDL_bool SDL_JoystickAxesCenteredAtZero(SDL_Joystick *joystick)
#endif /* __WINRT__ */
}
static SDL_bool IsBackboneOne(SDL_Joystick *joystick)
{
if (joystick->name && SDL_strstr(joystick->name, "Backbone One")) {
return SDL_TRUE;
}
return SDL_FALSE;
}
static SDL_bool IsROGAlly(SDL_Joystick *joystick)
{
Uint16 vendor, product;
SDL_JoystickGUID guid = SDL_GetJoystickGUID(joystick);
/* The ROG Ally controller spoofs an Xbox 360 controller */
SDL_GetJoystickGUIDInfo(guid, &vendor, &product, NULL, NULL);
if (vendor == USB_VENDOR_MICROSOFT && product == USB_PRODUCT_XBOX360_WIRED_CONTROLLER) {
/* Check to see if this system has the expected sensors */
SDL_bool has_ally_accel = SDL_FALSE;
SDL_bool has_ally_gyro = SDL_FALSE;
if (SDL_InitSubSystem(SDL_INIT_SENSOR) == 0) {
SDL_SensorID *sensors = SDL_GetSensors(NULL);
if (sensors) {
int i;
for (i = 0; sensors[i]; ++i) {
SDL_SensorID sensor = sensors[i];
if (!has_ally_accel && SDL_GetSensorInstanceType(sensor) == SDL_SENSOR_ACCEL) {
const char *sensor_name = SDL_GetSensorInstanceName(sensor);
if (sensor_name && SDL_strcmp(sensor_name, "Sensor BMI320 Acc") == 0) {
has_ally_accel = SDL_TRUE;
}
}
if (!has_ally_gyro && SDL_GetSensorInstanceType(sensor) == SDL_SENSOR_GYRO) {
const char *sensor_name = SDL_GetSensorInstanceName(sensor);
if (sensor_name && SDL_strcmp(sensor_name, "Sensor BMI320 Gyr") == 0) {
has_ally_gyro = SDL_TRUE;
}
}
}
SDL_free(sensors);
}
SDL_QuitSubSystem(SDL_INIT_SENSOR);
}
if (has_ally_accel && has_ally_gyro) {
return SDL_TRUE;
}
}
return SDL_FALSE;
}
static SDL_bool ShouldAttemptSensorFusion(SDL_Joystick *joystick)
{
static Uint32 wraparound_gamepads[] = {
MAKE_VIDPID(0x1949, 0x0402), /* Ipega PG-9083S */
MAKE_VIDPID(0x27f8, 0x0bbc), /* Gamevice */
MAKE_VIDPID(0x27f8, 0x0bbf), /* Razer Kishi */
};
SDL_JoystickGUID guid;
Uint16 vendor, product;
Uint32 vidpid;
int i;
int hint;
/* The SDL controller sensor API is only available for gamepads (at the moment) */
if (!joystick->is_gamepad) {
return SDL_FALSE;
}
/* If the controller already has sensors, use those */
if (joystick->nsensors > 0) {
return SDL_FALSE;
}
hint = SDL_GetStringInteger(SDL_GetHint(SDL_HINT_GAMECONTROLLER_SENSOR_FUSION), -1);
if (hint > 0) {
return SDL_TRUE;
}
if (hint == 0) {
return SDL_FALSE;
}
/* See if the controller is in our list of wraparound gamepads */
guid = SDL_GetJoystickGUID(joystick);
SDL_GetJoystickGUIDInfo(guid, &vendor, &product, NULL, NULL);
vidpid = MAKE_VIDPID(vendor, product);
for (i = 0; i < SDL_arraysize(wraparound_gamepads); ++i) {
if (vidpid == wraparound_gamepads[i]) {
return SDL_TRUE;
}
}
/* See if this is another known wraparound gamepad */
if (IsBackboneOne(joystick) || IsROGAlly(joystick)) {
return SDL_TRUE;
}
return SDL_FALSE;
}
static void AttemptSensorFusion(SDL_Joystick *joystick)
{
SDL_SensorID *sensors;
int i;
if (SDL_InitSubSystem(SDL_INIT_SENSOR) < 0) {
return;
}
sensors = SDL_GetSensors(NULL);
if (sensors) {
for (i = 0; sensors[i]; ++i) {
SDL_SensorID sensor = sensors[i];
if (!joystick->accel_sensor && SDL_GetSensorInstanceType(sensor) == SDL_SENSOR_ACCEL) {
/* Increment the sensor subsystem reference count */
SDL_InitSubSystem(SDL_INIT_SENSOR);
joystick->accel_sensor = sensor;
SDL_PrivateJoystickAddSensor(joystick, SDL_SENSOR_ACCEL, 0.0f);
}
if (!joystick->gyro_sensor && SDL_GetSensorInstanceType(sensor) == SDL_SENSOR_GYRO) {
/* Increment the sensor subsystem reference count */
SDL_InitSubSystem(SDL_INIT_SENSOR);
joystick->gyro_sensor = sensor;
SDL_PrivateJoystickAddSensor(joystick, SDL_SENSOR_GYRO, 0.0f);
}
}
SDL_free(sensors);
}
SDL_QuitSubSystem(SDL_INIT_SENSOR);
}
static void CleanupSensorFusion(SDL_Joystick *joystick)
{
if (joystick->accel_sensor || joystick->gyro_sensor) {
if (joystick->accel_sensor) {
if (joystick->accel) {
SDL_CloseSensor(joystick->accel);
joystick->accel = NULL;
}
joystick->accel_sensor = 0;
/* Decrement the sensor subsystem reference count */
SDL_QuitSubSystem(SDL_INIT_SENSOR);
}
if (joystick->gyro_sensor) {
if (joystick->gyro) {
SDL_CloseSensor(joystick->gyro);
joystick->gyro = NULL;
}
joystick->gyro_sensor = 0;
/* Decrement the sensor subsystem reference count */
SDL_QuitSubSystem(SDL_INIT_SENSOR);
}
}
}
/*
* Open a joystick for use - the index passed as an argument refers to
* the N'th joystick on the system. This index is the value which will
@@ -611,6 +772,11 @@ SDL_Joystick *SDL_OpenJoystick(SDL_JoystickID instance_id)
joystick->is_gamepad = SDL_IsGamepad(instance_id);
/* Use system gyro and accelerometer if the gamepad doesn't have built-in sensors */
if (ShouldAttemptSensorFusion(joystick)) {
AttemptSensorFusion(joystick);
}
/* Add joystick to list */
++joystick->ref_count;
/* Link the joystick in the list */
@@ -1253,6 +1419,8 @@ void SDL_CloseJoystick(SDL_Joystick *joystick)
SDL_RumbleJoystickTriggers(joystick, 0, 0, 0);
}
CleanupSensorFusion(joystick);
joystick->driver->Close(joystick);
joystick->hwdata = NULL;
joystick->magic = NULL;
@@ -1273,11 +1441,10 @@ void SDL_CloseJoystick(SDL_Joystick *joystick)
joysticklist = joysticklist->next;
}
/* Free the data associated with this joystick */
SDL_free(joystick->name);
SDL_free(joystick->path);
SDL_free(joystick->serial);
/* Free the data associated with this joystick */
SDL_free(joystick->axes);
SDL_free(joystick->hats);
SDL_free(joystick->buttons);
@@ -1682,6 +1849,16 @@ void SDL_UpdateJoysticks(void)
for (joystick = SDL_joysticks; joystick; joystick = joystick->next) {
if (joystick->attached) {
if (joystick->accel || joystick->gyro) {
SDL_LockSensors();
if (joystick->gyro) {
SDL_UpdateSensor(joystick->gyro);
}
if (joystick->accel) {
SDL_UpdateSensor(joystick->accel);
}
SDL_UnlockSensors();
}
joystick->driver->Update(joystick);
if (joystick->delayed_guide_button) {