Android: Use input override system for touch controls

This is the first step of getting rid of the controller indirection
on Android. (Needing a way for touch controls to provide input
to the emulator core is the reason why the controller indirection
exists to begin with as far as I understand it.)

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/NativeLibrary.java

@@ -281,9 +281,6 @@ public static void rumble(int padID, double state)
   public static native void SetMotionSensorsEnabled(boolean accelerometerEnabled,
           boolean gyroscopeEnabled);
 
-  // Angle is in radians and should be non-negative
-  public static native double GetInputRadiusAtAngle(int emu_pad_id, int stick, double angle);
-
   /**
    * Gets the Dolphin version string.
    *

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/input/InputOverrider.java

@@ -0,0 +1,82 @@
+package org.dolphinemu.dolphinemu.features.input;
+
+public final class InputOverrider
+{
+  public static final class ControlID
+  {
+    public static final int GCPAD_A_BUTTON = 0;
+    public static final int GCPAD_B_BUTTON = 1;
+    public static final int GCPAD_X_BUTTON = 2;
+    public static final int GCPAD_Y_BUTTON = 3;
+    public static final int GCPAD_Z_BUTTON = 4;
+    public static final int GCPAD_START_BUTTON = 5;
+    public static final int GCPAD_DPAD_UP = 6;
+    public static final int GCPAD_DPAD_DOWN = 7;
+    public static final int GCPAD_DPAD_LEFT = 8;
+    public static final int GCPAD_DPAD_RIGHT = 9;
+    public static final int GCPAD_L_DIGITAL = 10;
+    public static final int GCPAD_R_DIGITAL = 11;
+    public static final int GCPAD_L_ANALOG = 12;
+    public static final int GCPAD_R_ANALOG = 13;
+    public static final int GCPAD_MAIN_STICK_X = 14;
+    public static final int GCPAD_MAIN_STICK_Y = 15;
+    public static final int GCPAD_C_STICK_X = 16;
+    public static final int GCPAD_C_STICK_Y = 17;
+
+    public static final int WIIMOTE_A_BUTTON = 18;
+    public static final int WIIMOTE_B_BUTTON = 19;
+    public static final int WIIMOTE_ONE_BUTTON = 20;
+    public static final int WIIMOTE_TWO_BUTTON = 21;
+    public static final int WIIMOTE_PLUS_BUTTON = 22;
+    public static final int WIIMOTE_MINUS_BUTTON = 23;
+    public static final int WIIMOTE_HOME_BUTTON = 24;
+    public static final int WIIMOTE_DPAD_UP = 25;
+    public static final int WIIMOTE_DPAD_DOWN = 26;
+    public static final int WIIMOTE_DPAD_LEFT = 27;
+    public static final int WIIMOTE_DPAD_RIGHT = 28;
+    public static final int WIIMOTE_IR_X = 29;
+    public static final int WIIMOTE_IR_Y = 30;
+
+    public static final int NUNCHUK_C_BUTTON = 31;
+    public static final int NUNCHUK_Z_BUTTON = 32;
+    public static final int NUNCHUK_STICK_X = 33;
+    public static final int NUNCHUK_STICK_Y = 34;
+
+    public static final int CLASSIC_A_BUTTON = 35;
+    public static final int CLASSIC_B_BUTTON = 36;
+    public static final int CLASSIC_X_BUTTON = 37;
+    public static final int CLASSIC_Y_BUTTON = 38;
+    public static final int CLASSIC_ZL_BUTTON = 39;
+    public static final int CLASSIC_ZR_BUTTON = 40;
+    public static final int CLASSIC_PLUS_BUTTON = 41;
+    public static final int CLASSIC_MINUS_BUTTON = 42;
+    public static final int CLASSIC_HOME_BUTTON = 43;
+    public static final int CLASSIC_DPAD_UP = 44;
+    public static final int CLASSIC_DPAD_DOWN = 45;
+    public static final int CLASSIC_DPAD_LEFT = 46;
+    public static final int CLASSIC_DPAD_RIGHT = 47;
+    public static final int CLASSIC_L_DIGITAL = 48;
+    public static final int CLASSIC_R_DIGITAL = 49;
+    public static final int CLASSIC_L_ANALOG = 50;
+    public static final int CLASSIC_R_ANALOG = 51;
+    public static final int CLASSIC_LEFT_STICK_X = 52;
+    public static final int CLASSIC_LEFT_STICK_Y = 53;
+    public static final int CLASSIC_RIGHT_STICK_X = 54;
+    public static final int CLASSIC_RIGHT_STICK_Y = 55;
+  }
+
+  public static native void registerGameCube(int controllerIndex);
+
+  public static native void registerWii(int controllerIndex);
+
+  public static native void unregisterGameCube(int controllerIndex);
+
+  public static native void unregisterWii(int controllerIndex);
+
+  public static native void setControlState(int controllerIndex, int control, double state);
+
+  public static native void clearControlState(int controllerIndex, int control);
+
+  // Angle is in radians and should be non-negative
+  public static native double getGateRadiusAtAngle(int emuPadId, int stick, double angle);
+}

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/model/IntSetting.java

@@ -29,8 +29,7 @@ public enum IntSetting implements AbstractIntSetting
   MAIN_MOTION_CONTROLS(Settings.FILE_DOLPHIN, Settings.SECTION_INI_ANDROID, "MotionControls", 1),
 
   MAIN_DOUBLE_TAP_BUTTON(Settings.FILE_DOLPHIN, Settings.SECTION_INI_ANDROID_OVERLAY_BUTTONS,
-          "DoubleTapButton",
-          InputOverlayPointer.DOUBLE_TAP_OPTIONS.get(InputOverlayPointer.DOUBLE_TAP_A)),
+          "DoubleTapButton", NativeLibrary.ButtonType.WIIMOTE_BUTTON_A),
 
   SYSCONF_LANGUAGE(Settings.FILE_SYSCONF, "IPL", "LNG", 0x01),
   SYSCONF_SOUND_MODE(Settings.FILE_SYSCONF, "IPL", "SND", 0x01),

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/fragments/EmulationFragment.java

@@ -126,6 +126,15 @@ public void onPause()
     super.onPause();
   }
 
+  @Override
+  public void onDestroy()
+  {
+    if (mInputOverlay != null)
+      mInputOverlay.onDestroy();
+
+    super.onDestroy();
+  }
+
   @Override
   public void onDetach()
   {