Issue number: 35

Read the axis and button maps from the joystick nodes.

plugins/linux/src/java/net/java/games/input/LinuxEnvironmentPlugin.java

@@ -312,8 +312,10 @@ public final class LinuxEnvironmentPlugin extends ControllerEnvironment implemen
 
 	private final static Controller createJoystickFromJoystickDevice(LinuxJoystickDevice device) {
 		List components = new ArrayList();
+		byte[] axisMap = device.getAxisMap();
+		char[] buttonMap = device.getButtonMap();
 		for (int i = 0; i < device.getNumButtons(); i++) {
-			Component.Identifier.Button button_id = getButtonIdentifier(i);
+			Component.Identifier.Button button_id = (Component.Identifier.Button)LinuxNativeTypesMap.getButtonID(buttonMap[i]);
 			if (button_id != null) {
 				LinuxJoystickButton button = new LinuxJoystickButton(button_id);
 				device.registerButton(i, button);
@@ -322,14 +324,12 @@ public final class LinuxEnvironmentPlugin extends ControllerEnvironment implemen
 		}
 		for (int i = 0; i < device.getNumAxes(); i++) {
 			Component.Identifier.Axis axis_id;
-			if ((i % 2) == 0)
+			axis_id = (Component.Identifier.Axis) LinuxNativeTypesMap.getAbsAxisID(axisMap[i]);
-				axis_id = Component.Identifier.Axis.X;
-			else
-				axis_id = Component.Identifier.Axis.Y;
 			LinuxJoystickAxis axis = new LinuxJoystickAxis(axis_id);
 			device.registerAxis(i, axis);
 			components.add(axis);
 		}
+		
 		return new LinuxJoystickAbstractController(device, (Component[])components.toArray(new Component[]{}), new Controller[]{}, new Rumbler[]{});
 	}
 

plugins/linux/src/java/net/java/games/input/LinuxJoystickDevice.java

@@ -48,6 +48,8 @@ final class LinuxJoystickDevice implements LinuxDevice {
 	private final Event event = new Event();
 	private final LinuxJoystickButton[] buttons;
 	private final LinuxJoystickAxis[] axes;
+	private final byte[] axisMap;
+	private final char[] buttonMap;
 
 	private EventQueue event_queue;
 
@@ -63,6 +65,8 @@ final class LinuxJoystickDevice implements LinuxDevice {
 			setBufferSize(AbstractController.EVENT_QUEUE_DEPTH);
 			buttons = new LinuxJoystickButton[getNumDeviceButtons()];
 			axes = new LinuxJoystickAxis[getNumDeviceAxes()];
+			axisMap = getDeviceAxisMap();
+			buttonMap = getDeviceButtonMap();
 		} catch (IOException e) {
 			close();
 			throw e;
@@ -142,6 +146,14 @@ final class LinuxJoystickDevice implements LinuxDevice {
 		return buttons.length;
 	}
 	
+	public final byte[] getAxisMap() {
+		return axisMap;
+	}
+
+	public final char[] getButtonMap() {
+		return buttonMap;
+	}
+
 	private final int getNumDeviceButtons() throws IOException {
 		return nGetNumButtons(fd);
 	}
@@ -152,6 +164,16 @@ final class LinuxJoystickDevice implements LinuxDevice {
 	}
 	private final static native int nGetNumAxes(long fd) throws IOException;
 	
+	private final byte[] getDeviceAxisMap() throws IOException {
+		return nGetAxisMap(fd);
+	}
+	private final static native byte[] nGetAxisMap(long fd) throws IOException;
+
+	private final char[] getDeviceButtonMap() throws IOException {
+		return nGetButtonMap(fd);
+	}
+	private final static native char[] nGetButtonMap(long fd) throws IOException;
+
 	private final int getVersion() throws IOException {
 		return nGetVersion(fd);
 	}

plugins/linux/src/native/net_java_games_input_LinuxJoystickDevice.c

@@ -108,6 +108,41 @@ JNIEXPORT jint JNICALL Java_net_java_games_input_LinuxJoystickDevice_nGetNumAxes
 	return num_axes;
 }
 
+JNIEXPORT jbyteArray JNICALL Java_net_java_games_input_LinuxJoystickDevice_nGetAxisMap(JNIEnv *env, jclass unused, jlong fd_address) {
+	int fd = (int)fd_address;
+	__u8 axis_map[ABS_MAX + 1];
+	if (ioctl(fd, JSIOCGAXMAP, axis_map) == -1) {
+		throwIOException(env, "Failed to get axis map (%d)\n", errno);
+		return NULL;
+	}
+	
+	jbyteArray axis_map_array = (*env)->NewByteArray(env, (ABS_MAX + 1));
+	if (axis_map_array == NULL)
+		return NULL;
+	(*env)->SetByteArrayRegion(env, axis_map_array, 0, (ABS_MAX + 1), (jbyte *)axis_map);
+	return axis_map_array;
+}
+
+JNIEXPORT jcharArray JNICALL Java_net_java_games_input_LinuxJoystickDevice_nGetButtonMap(JNIEnv *env, jclass unused, jlong fd_address) {
+	int fd = (int)fd_address;
+	int i=0;
+	__u16 button_map[KEY_MAX - BTN_MISC + 1];
+	if (ioctl(fd, JSIOCGBTNMAP, button_map) == -1) {
+		throwIOException(env, "Failed to get button map (%d)\n", errno);
+		return NULL;
+	}
+	
+	for(i=0;i<10;i++) {
+		printf("Button %d maps to %d\n", i, button_map[i]);
+	}
+	
+	jcharArray button_map_array = (*env)->NewCharArray(env, (KEY_MAX - BTN_MISC + 1));
+	if (button_map_array == NULL)
+		return NULL;
+	(*env)->SetCharArrayRegion(env, button_map_array, 0, (KEY_MAX - BTN_MISC + 1), (jbyte *)button_map);
+	return button_map_array;
+}
+
 JNIEXPORT jboolean JNICALL Java_net_java_games_input_LinuxJoystickDevice_nGetNextEvent(JNIEnv *env, jclass unused, jlong fd_address, jobject event_return) {
 	int fd = (int)fd_address;
 	jclass event_class = (*env)->GetObjectClass(env, event_return);