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Add support for joystick motion sensors on Android

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This commit is contained in:
Nintorch
2026-05-04 00:35:34 +05:00
committed by Sam Lantinga
parent 3ee0439ae5
commit c699512adc
5 changed files with 163 additions and 10 deletions
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78
android-project/app/src/main/java/org/libsdl/app/SDLControllerManager.java
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@@ -10,6 +10,10 @@ import android.hardware.lights.Light;
import android.hardware.lights.LightsRequest;
import android.hardware.lights.LightsManager;
import android.hardware.lights.LightState;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.graphics.Color;
import android.os.Build;
import android.os.VibrationEffect;
@@ -30,7 +34,8 @@ public class SDLControllerManager
static native void nativeAddJoystick(int device_id, String name, String desc,
int vendor_id, int product_id,
int button_mask,
int naxes, int axis_mask, int nhats, boolean can_rumble, boolean has_rgb_led);
int naxes, int axis_mask, int nhats, boolean can_rumble, boolean has_rgb_led,
boolean has_accelerometer, boolean has_gyroscope);
static native void nativeRemoveJoystick(int device_id);
static native void nativeAddHaptic(int device_id, String name);
static native void nativeRemoveHaptic(int device_id);
@@ -40,6 +45,7 @@ public class SDLControllerManager
float value);
static native void onNativeHat(int device_id, int hat_id,
int x, int y);
static native void onNativeJoySensor(int device_id, int sensor_type, long sensor_timestamp, float x, float y, float z);
protected static SDLJoystickHandler mJoystickHandler;
protected static SDLHapticHandler mHapticHandler;
@@ -81,6 +87,13 @@ public class SDLControllerManager
mJoystickHandler.setLED(device_id, red, green, blue);
}
/**
* This method is called by SDL using JNI.
*/
static void joystickSetSensorsEnabled(int device_id, boolean enabled) {
mJoystickHandler.setSensorsEnabled(device_id, enabled);
}
/**
* This method is called by SDL using JNI.
*/
@@ -153,6 +166,10 @@ class SDLJoystickHandler {
ArrayList<InputDevice.MotionRange> hats;
ArrayList<Light> lights;
LightsManager.LightsSession lightsSession;
SensorManager sensorManager;
SDLJoySensorListener sensorListener;
Sensor accelerometerSensor;
Sensor gyroscopeSensor;
}
static class RangeComparator implements Comparator<InputDevice.MotionRange> {
@Override
@@ -241,6 +258,8 @@ class SDLJoystickHandler {
boolean can_rumble = false;
boolean has_rgb_led = false;
boolean has_accelerometer = false;
boolean has_gyroscope = false;
if (Build.VERSION.SDK_INT >= 31 /* Android 12.0 (S) */) {
VibratorManager vibratorManager = joystickDevice.getVibratorManager();
int[] vibrators = vibratorManager.getVibratorIds();
@@ -258,12 +277,26 @@ class SDLJoystickHandler {
joystick.lightsSession = lightsManager.openSession();
has_rgb_led = true;
}
SensorManager sensorManager = joystickDevice.getSensorManager();
if (sensorManager != null) {
joystick.sensorManager = sensorManager;
joystick.sensorListener = new SDLJoySensorListener(joystick.device_id);
joystick.accelerometerSensor = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
if (joystick.accelerometerSensor != null) {
has_accelerometer = true;
}
joystick.gyroscopeSensor = sensorManager.getDefaultSensor(Sensor.TYPE_GYROSCOPE);
if (joystick.gyroscopeSensor != null) {
has_gyroscope = true;
}
}
}
mJoysticks.add(joystick);
SDLControllerManager.nativeAddJoystick(joystick.device_id, joystick.name, joystick.desc,
getVendorId(joystickDevice), getProductId(joystickDevice),
getButtonMask(joystickDevice), joystick.axes.size(), getAxisMask(joystick.axes), joystick.hats.size()/2, can_rumble, has_rgb_led);
getButtonMask(joystickDevice), joystick.axes.size(), getAxisMask(joystick.axes), joystick.hats.size()/2, can_rumble, has_rgb_led,
has_accelerometer, has_gyroscope);
}
}
}
@@ -508,6 +541,31 @@ class SDLJoystickHandler {
}
joystick.lightsSession.requestLights(lightsRequest.build());
}
void setSensorsEnabled(int device_id, boolean enabled) {
if (Build.VERSION.SDK_INT < 31 /* Android 12.0 (S) */) {
return;
}
SDLJoystick joystick = getJoystick(device_id);
if (joystick == null || joystick.sensorManager == null) {
return;
}
if (enabled) {
if (joystick.accelerometerSensor != null) {
joystick.sensorManager.registerListener(joystick.sensorListener, joystick.accelerometerSensor, SensorManager.SENSOR_DELAY_GAME, null);
}
if (joystick.gyroscopeSensor != null) {
joystick.sensorManager.registerListener(joystick.sensorListener, joystick.gyroscopeSensor, SensorManager.SENSOR_DELAY_GAME, null);
}
} else {
if (joystick.accelerometerSensor != null) {
joystick.sensorManager.unregisterListener(joystick.sensorListener, joystick.accelerometerSensor);
}
if (joystick.gyroscopeSensor != null) {
joystick.sensorManager.unregisterListener(joystick.sensorListener, joystick.gyroscopeSensor);
}
}
}
}
class SDLHapticHandler_API31 extends SDLHapticHandler {
@@ -933,3 +991,19 @@ class SDLGenericMotionListener_API29 extends SDLGenericMotionListener_API26 {
return penDevice.isExternal() ? SDL_PEN_DEVICE_TYPE_INDIRECT : SDL_PEN_DEVICE_TYPE_DIRECT;
}
}
class SDLJoySensorListener implements SensorEventListener {
int device_id;
public SDLJoySensorListener(int device_id) {
this.device_id = device_id;
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {}
@Override
public void onSensorChanged(SensorEvent event) {
SDLControllerManager.onNativeJoySensor(device_id, event.sensor.getType(), event.timestamp, event.values[0], event.values[1], event.values[2]);
}
}

37
src/core/android/SDL_android.c
View File

@@ -312,10 +312,15 @@ JNIEXPORT void JNICALL SDL_JAVA_CONTROLLER_INTERFACE(onNativeHat)(
JNIEnv *env, jclass jcls,
jint device_id, jint hat_id, jint x, jint y);
JNIEXPORT void JNICALL SDL_JAVA_CONTROLLER_INTERFACE(onNativeJoySensor)(
JNIEnv *env, jclass jcls,
jint device_id, jint sensor_type, jlong sensor_timestamp, jfloat x, jfloat y, jfloat z);
JNIEXPORT void JNICALL SDL_JAVA_CONTROLLER_INTERFACE(nativeAddJoystick)(
JNIEnv *env, jclass jcls,
jint device_id, jstring device_name, jstring device_desc, jint vendor_id, jint product_id,
jint button_mask, jint naxes, jint axis_mask, jint nhats, jboolean can_rumble, jboolean has_rgb_led);
jint button_mask, jint naxes, jint axis_mask, jint nhats,
jboolean can_rumble, jboolean has_rgb_led, jboolean has_accelerometer, jboolean has_gyroscope);
JNIEXPORT void JNICALL SDL_JAVA_CONTROLLER_INTERFACE(nativeRemoveJoystick)(
JNIEnv *env, jclass jcls,
@@ -335,7 +340,8 @@ static JNINativeMethod SDLControllerManager_tab[] = {
{ "onNativePadUp", "(II)Z", SDL_JAVA_CONTROLLER_INTERFACE(onNativePadUp) },
{ "onNativeJoy", "(IIF)V", SDL_JAVA_CONTROLLER_INTERFACE(onNativeJoy) },
{ "onNativeHat", "(IIII)V", SDL_JAVA_CONTROLLER_INTERFACE(onNativeHat) },
{ "nativeAddJoystick", "(ILjava/lang/String;Ljava/lang/String;IIIIIIZZ)V", SDL_JAVA_CONTROLLER_INTERFACE(nativeAddJoystick) },
{ "onNativeJoySensor", "(IIJFFF)V", SDL_JAVA_CONTROLLER_INTERFACE(onNativeJoySensor) },
{ "nativeAddJoystick", "(ILjava/lang/String;Ljava/lang/String;IIIIIIZZZZ)V", SDL_JAVA_CONTROLLER_INTERFACE(nativeAddJoystick) },
{ "nativeRemoveJoystick", "(I)V", SDL_JAVA_CONTROLLER_INTERFACE(nativeRemoveJoystick) },
{ "nativeAddHaptic", "(ILjava/lang/String;)V", SDL_JAVA_CONTROLLER_INTERFACE(nativeAddHaptic) },
{ "nativeRemoveHaptic", "(I)V", SDL_JAVA_CONTROLLER_INTERFACE(nativeRemoveHaptic) }
@@ -408,6 +414,7 @@ static jclass mControllerManagerClass;
// method signatures
static jmethodID midPollInputDevices;
static jmethodID midJoystickSetLED;
static jmethodID midJoystickSetSensorsEnabled;
static jmethodID midPollHapticDevices;
static jmethodID midHapticRun;
static jmethodID midHapticRumble;
@@ -756,6 +763,8 @@ JNIEXPORT void JNICALL SDL_JAVA_CONTROLLER_INTERFACE(nativeSetupJNI)(JNIEnv *env
"pollInputDevices", "()V");
midJoystickSetLED = (*env)->GetStaticMethodID(env, mControllerManagerClass,
"joystickSetLED", "(IIII)V");
midJoystickSetSensorsEnabled = (*env)->GetStaticMethodID(env, mControllerManagerClass,
"joystickSetSensorsEnabled", "(IZ)V");
midPollHapticDevices = (*env)->GetStaticMethodID(env, mControllerManagerClass,
"pollHapticDevices", "()V");
midHapticRun = (*env)->GetStaticMethodID(env, mControllerManagerClass,
@@ -765,7 +774,7 @@ JNIEXPORT void JNICALL SDL_JAVA_CONTROLLER_INTERFACE(nativeSetupJNI)(JNIEnv *env
midHapticStop = (*env)->GetStaticMethodID(env, mControllerManagerClass,
"hapticStop", "(I)V");
if (!midPollInputDevices || !midJoystickSetLED || !midPollHapticDevices || !midHapticRun || !midHapticRumble || !midHapticStop) {
if (!midPollInputDevices || !midJoystickSetLED || !midJoystickSetSensorsEnabled || !midPollHapticDevices || !midHapticRun || !midHapticRumble || !midHapticStop) {
__android_log_print(ANDROID_LOG_WARN, "SDL", "Missing some Java callbacks, do you have the latest version of SDLControllerManager.java?");
}
@@ -1191,17 +1200,29 @@ JNIEXPORT void JNICALL SDL_JAVA_CONTROLLER_INTERFACE(onNativeHat)(
#endif // SDL_JOYSTICK_ANDROID
}
JNIEXPORT void JNICALL SDL_JAVA_CONTROLLER_INTERFACE(onNativeJoySensor)(
JNIEnv *env, jclass jcls,
jint device_id, jint sensor_type, jlong sensor_timestamp, jfloat x, jfloat y, jfloat z)
{
#ifdef SDL_JOYSTICK_ANDROID
// In Java there's no Uint64 type, so pass Sint64 as if it was Uint64.
Android_OnJoySensor(device_id, sensor_type, sensor_timestamp, x, y, z);
#endif // SDL_JOYSTICK_ANDROID
}
JNIEXPORT void JNICALL SDL_JAVA_CONTROLLER_INTERFACE(nativeAddJoystick)(
JNIEnv *env, jclass jcls,
jint device_id, jstring device_name, jstring device_desc,
jint vendor_id, jint product_id,
jint button_mask, jint naxes, jint axis_mask, jint nhats, jboolean can_rumble, jboolean has_rgb_led)
jint button_mask, jint naxes, jint axis_mask, jint nhats, jboolean can_rumble, jboolean has_rgb_led,
jboolean has_accelerometer, jboolean has_gyroscope)
{
#ifdef SDL_JOYSTICK_ANDROID
const char *name = (*env)->GetStringUTFChars(env, device_name, NULL);
const char *desc = (*env)->GetStringUTFChars(env, device_desc, NULL);
Android_AddJoystick(device_id, name, desc, vendor_id, product_id, button_mask, naxes, axis_mask, nhats, can_rumble, has_rgb_led);
Android_AddJoystick(device_id, name, desc, vendor_id, product_id, button_mask, naxes, axis_mask, nhats,
can_rumble, has_rgb_led, has_accelerometer, has_gyroscope);
(*env)->ReleaseStringUTFChars(env, device_name, name);
(*env)->ReleaseStringUTFChars(env, device_desc, desc);
@@ -2626,6 +2647,12 @@ void Android_JNI_JoystickSetLED(int device_id, int red, int green, int blue)
(*env)->CallStaticVoidMethod(env, mControllerManagerClass, midJoystickSetLED, device_id, red, green, blue);
}
void Android_JNI_JoystickSetSensorsEnabled(int device_id, bool enabled)
{
JNIEnv *env = Android_JNI_GetEnv();
(*env)->CallStaticVoidMethod(env, mControllerManagerClass, midJoystickSetSensorsEnabled, device_id, (enabled == 1));
}
void Android_JNI_PollHapticDevices(void)
{
JNIEnv *env = Android_JNI_GetEnv();

1
src/core/android/SDL_android.h
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@@ -105,6 +105,7 @@ int Android_JNI_GetPowerInfo(int *plugged, int *charged, int *battery, int *seco
// Joystick support
void Android_JNI_PollInputDevices(void);
void Android_JNI_JoystickSetLED(int device_id, int red, int green, int blue);
void Android_JNI_JoystickSetSensorsEnabled(int device_id, bool enabled);
// Haptic support
void Android_JNI_PollHapticDevices(void);

51
src/joystick/android/SDL_sysjoystick.c
View File

@@ -306,7 +306,37 @@ bool Android_OnHat(int device_id, int hat_id, int x, int y)
return false;
}
void Android_AddJoystick(int device_id, const char *name, const char *desc, int vendor_id, int product_id, int button_mask, int naxes, int axis_mask, int nhats, bool can_rumble, bool has_rgb_led)
void Android_OnJoySensor(int device_id, int sensor_type, Uint64 sensor_timestamp, float x, float y, float z)
{
Uint64 timestamp = SDL_GetTicksNS();
SDL_joylist_item *item;
SDL_SensorType sensor;
float data[3];
if (sensor_type == 1) { // Sensor.TYPE_ACCELEROMETER
sensor = SDL_SENSOR_ACCEL;
} else if (sensor_type == 4) { // Sensor.TYPE_GYROSCOPE
sensor = SDL_SENSOR_GYRO;
} else {
// Unsupported sensor
return;
}
// The axes of sensor events and their signs are the same as SDL's, so no conversion required
data[0] = x;
data[1] = y;
data[2] = z;
SDL_LockJoysticks();
item = JoystickByDeviceId(device_id);
if (item && item->joystick) {
SDL_SendJoystickSensor(timestamp, item->joystick, sensor, sensor_timestamp, data, 3);
}
SDL_UnlockJoysticks();
}
void Android_AddJoystick(int device_id, const char *name, const char *desc, int vendor_id, int product_id, int button_mask, int naxes, int axis_mask, int nhats,
bool can_rumble, bool has_rgb_led, bool has_accelerometer, bool has_gyroscope)
{
SDL_joylist_item *item;
SDL_GUID guid;
@@ -382,6 +412,8 @@ void Android_AddJoystick(int device_id, const char *name, const char *desc, int
item->nhats = nhats;
item->can_rumble = can_rumble;
item->has_rgb_led = has_rgb_led;
item->has_accelerometer = has_accelerometer;
item->has_gyroscope = has_accelerometer;
item->device_instance = SDL_GetNextObjectID();
if (!SDL_joylist_tail) {
SDL_joylist = SDL_joylist_tail = item;
@@ -587,6 +619,13 @@ static bool ANDROID_JoystickOpen(SDL_Joystick *joystick, int device_index)
SDL_SetBooleanProperty(SDL_GetJoystickProperties(joystick), SDL_PROP_JOYSTICK_CAP_RGB_LED_BOOLEAN, true);
}
if (item->has_accelerometer) {
SDL_PrivateJoystickAddSensor(joystick, SDL_SENSOR_ACCEL, 0.0f);
}
if (item->has_gyroscope) {
SDL_PrivateJoystickAddSensor(joystick, SDL_SENSOR_GYRO, 0.0f);
}
return true;
}
@@ -631,7 +670,15 @@ static bool ANDROID_JoystickSendEffect(SDL_Joystick *joystick, const void *data,
static bool ANDROID_JoystickSetSensorsEnabled(SDL_Joystick *joystick, bool enabled)
{
return SDL_Unsupported();
SDL_joylist_item *item = (SDL_joylist_item *)joystick->hwdata;
if (!item) {
return SDL_SetError("SetSensorsEnabled failed, device disconnected");
}
if (!item->has_accelerometer && !item->has_gyroscope) {
return SDL_Unsupported();
}
Android_JNI_JoystickSetSensorsEnabled(item->device_id, enabled);
return true;
}
static void ANDROID_JoystickUpdate(SDL_Joystick *joystick)

6
src/joystick/android/SDL_sysjoystick_c.h
View File

@@ -32,7 +32,9 @@ extern bool Android_OnPadDown(int device_id, int keycode);
extern bool Android_OnPadUp(int device_id, int keycode);
extern bool Android_OnJoy(int device_id, int axisnum, float value);
extern bool Android_OnHat(int device_id, int hat_id, int x, int y);
extern void Android_AddJoystick(int device_id, const char *name, const char *desc, int vendor_id, int product_id, int button_mask, int naxes, int axis_mask, int nhats, bool can_rumble, bool has_rgb_led);
extern void Android_OnJoySensor(int device_id, int sensor_type, Uint64 sensor_timestamp, float x, float y, float z);
extern void Android_AddJoystick(int device_id, const char *name, const char *desc, int vendor_id, int product_id, int button_mask, int naxes, int axis_mask, int nhats,
bool can_rumble, bool has_rgb_led, bool has_accelerometer, bool has_gyroscope);
extern void Android_RemoveJoystick(int device_id);
// A linked list of available joysticks
@@ -47,6 +49,8 @@ typedef struct SDL_joylist_item
int dpad_state;
bool can_rumble;
bool has_rgb_led;
bool has_accelerometer;
bool has_gyroscope;
struct SDL_joylist_item *next;
} SDL_joylist_item;