Implement SDL_HapticStopEffect on Android (thanks Rachel!)

android-project/app/src/main/java/org/libsdl/app/SDLControllerManager.java

@@ -81,6 +81,14 @@ public class SDLControllerManager
         mHapticHandler.run(device_id, length);
     }
 
+    /**
+     * This method is called by SDL using JNI.
+     */
+    public static void hapticStop(int device_id)
+    {
+        mHapticHandler.stop(device_id);
+    }
+
     // Check if a given device is considered a possible SDL joystick
     public static boolean isDeviceSDLJoystick(int deviceId) {
         InputDevice device = InputDevice.getDevice(deviceId);
@@ -422,6 +430,13 @@ class SDLHapticHandler {
         }
     }
 
+    public void stop(int device_id) {
+        SDLHaptic haptic = getHaptic(device_id);
+        if (haptic != null) {
+            haptic.vib.cancel();
+        }
+    }
+
     public void pollHapticDevices() {
         
         final int deviceId_VIBRATOR_SERVICE = 999999;

src/core/android/SDL_android.c

@@ -258,6 +258,7 @@ static jclass mControllerManagerClass;
 static jmethodID midPollInputDevices;
 static jmethodID midPollHapticDevices;
 static jmethodID midHapticRun;
+static jmethodID midHapticStop;
 
 /* static fields */
 static jfieldID fidSeparateMouseAndTouch;
@@ -430,8 +431,10 @@ JNIEXPORT void JNICALL SDL_JAVA_CONTROLLER_INTERFACE(nativeSetupJNI)(JNIEnv* mEn
                                 "pollHapticDevices", "()V");
     midHapticRun = (*mEnv)->GetStaticMethodID(mEnv, mControllerManagerClass,
                                 "hapticRun", "(II)V");
+    midHapticStop = (*mEnv)->GetStaticMethodID(mEnv, mControllerManagerClass,
+                                "hapticStop", "(I)V");
 
-    if (!midPollInputDevices || !midPollHapticDevices || !midHapticRun) {
+    if (!midPollInputDevices || !midPollHapticDevices || !midHapticRun || !midHapticStop) {
         __android_log_print(ANDROID_LOG_WARN, "SDL", "Missing some Java callbacks, do you have the latest version of SDLControllerManager.java?");
     }
 
@@ -1892,6 +1895,11 @@ void Android_JNI_HapticRun(int device_id, int length)
     (*env)->CallStaticVoidMethod(env, mControllerManagerClass, midHapticRun, device_id, length);
 }
 
+void Android_JNI_HapticStop(int device_id)
+{
+    JNIEnv *env = Android_JNI_GetEnv();
+    (*env)->CallStaticVoidMethod(env, mControllerManagerClass, midHapticStop, device_id);
+}
 
 /* See SDLActivity.java for constants. */
 #define COMMAND_SET_KEEP_SCREEN_ON    5

src/core/android/SDL_android.h

@@ -79,6 +79,7 @@ void Android_JNI_PollInputDevices(void);
 /* Haptic support */
 void Android_JNI_PollHapticDevices(void);
 void Android_JNI_HapticRun(int device_id, int length);
+void Android_JNI_HapticStop(int device_id);
 
 /* Video */
 void Android_JNI_SuspendScreenSaver(SDL_bool suspend);

src/haptic/android/SDL_syshaptic.c

@@ -238,6 +238,7 @@ SDL_SYS_HapticRunEffect(SDL_Haptic * haptic, struct haptic_effect *effect,
 int
 SDL_SYS_HapticStopEffect(SDL_Haptic * haptic, struct haptic_effect *effect)
 {
+    Android_JNI_HapticStop (((SDL_hapticlist_item *)haptic->hwdata)->device_id);
     return 0;
 }