Create mapping files

src/com/limelight/Limelight.java

@@ -4,6 +4,7 @@ import com.limelight.binding.PlatformBinding;
 import com.limelight.binding.audio.FakeAudioRenderer;
 import com.limelight.binding.video.FakeVideoRenderer;
 import com.limelight.input.EvdevLoader;
+import com.limelight.input.GamepadMapper;
 import com.limelight.input.GamepadMapping;
 import com.limelight.nvstream.NvConnection;
 import com.limelight.nvstream.NvConnectionListener;
@@ -183,6 +184,7 @@ public class Limelight implements NvConnectionListener {
 		String audio = "sysdefault";
 		String video = null;
 		String action = null;
+		String out= null;
 		Level debug = Level.SEVERE;
 		
 		for (int i = 0; i < args.length; i++) {
@@ -288,11 +290,13 @@ public class Limelight implements NvConnectionListener {
 				parse = false;
 			} else if (action == null) {
 				action = args[i].toLowerCase();
-				if (!action.equals("stream") && !action.equals("pair") && !action.equals("fake") && !action.equals("help") && !action.equals("discover") && !action.equals("list")) {
+				if (!action.equals("stream") && !action.equals("pair") && !action.equals("fake") && !action.equals("help") && !action.equals("discover") && !action.equals("list") && !action.equals("map")) {
 					System.out.println("Syntax error: invalid action specified");
 					System.exit(3);
 				}
-			} else if (host == null) {
+			} else if (action.equals("map") && out == null) {
+				out = args[i];
+			} else if (!action.equals("map") && host == null) {
 				try {
 					host = InetAddress.getByName(args[i]);
 				} catch (UnknownHostException ex) {
@@ -308,20 +312,44 @@ public class Limelight implements NvConnectionListener {
 		if (action == null) {
 			System.out.println("Syntax Error: Missing required action argument");
 			parse = false;
+		} else if (action.equals("map")) {
+			if (inputs.size() != 1) {
+				System.out.println("Syntax error: specify one -input");
+				parse = false;
+			} else if (out == null) {
+				System.out.println("Syntax error: specify the output file");
+				parse = false;
+			}
+			
+			if (parse) {
+				try {
+					GamepadMapper mapper = new GamepadMapper(inputs.get(0));
+					mapper.setup();
+					mapper.save(new File(out));
+				} catch (IOException | InterruptedException ex) {
+					System.err.println(ex.getMessage());
+				}
+				return;
+			}
 		} else if (action.equals("help"))
 			parse = false;
 		
 		if (args.length == 0 || !parse) {
-			System.out.println("Usage: java -jar limelight-pi.jar [options] host");
+			System.out.println("Usage: java -jar limelight-pi.jar action [options] host/file");
 			System.out.println();
 			System.out.println(" Actions:");
 			System.out.println();
+			System.out.println("\tmap\t\t\tCreate mapping file for gamepad");
 			System.out.println("\tpair\t\t\tPair device with computer");
 			System.out.println("\tstream\t\t\tStream computer to device");
 			System.out.println("\tdiscover\t\tList available computers");
 			System.out.println("\tlist\t\t\tList available games and applications");
 			System.out.println("\thelp\t\t\tShow this help");
 			System.out.println();
+			System.out.println(" Mapping options:");
+			System.out.println();
+			System.out.println("\t-input <device>\t\tUse <device> as input");
+			System.out.println();
 			System.out.println(" Streaming options:");
 			System.out.println();
 			System.out.println("\t-720\t\t\tUse 1280x720 resolution [default]");

src/com/limelight/input/EvdevHandler.java

@@ -1,23 +1,18 @@
 package com.limelight.input;
 
-import com.limelight.LimeLog;
 import com.limelight.nvstream.NvConnection;
 import com.limelight.nvstream.input.ControllerPacket;
 import com.limelight.nvstream.input.KeyboardPacket;
 import com.limelight.nvstream.input.MouseButtonPacket;
-import java.io.File;
-import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.nio.ByteBuffer;
-import java.nio.ByteOrder;
-import java.nio.channels.FileChannel;
 
 /**
  * Class that handles keyboard input using the Evdev interface
  * @author Iwan Timmer
  */
-public class EvdevHandler implements Runnable {
+public class EvdevHandler extends EvdevReader {
 	
 	private static KeyboardTranslator translator;
 	
@@ -32,24 +27,12 @@ public class EvdevHandler implements Runnable {
 	private EvdevAbsolute absLX, absLY, absRX, absRY, absLT, absRT, absDX, absDY;
 	
 	private NvConnection conn;
-	private FileChannel deviceInput;
-	private ByteBuffer inputBuffer;
-	
 	private GamepadMapping mapping;
 	
 	public EvdevHandler(NvConnection conn, String device, GamepadMapping mapping) throws FileNotFoundException, IOException {
+		super(device);
 		this.conn = conn;
 		this.mapping = mapping;
-		File file = new File(device);
-		if (!file.exists())
-			throw new FileNotFoundException("File " + device + " not found");
-		if (!file.canRead())
-			throw new IOException("Can't read from " + device);
-			
-		FileInputStream in = new FileInputStream(file);
-        deviceInput = in.getChannel();
-		inputBuffer = ByteBuffer.allocate(EvdevConstants.MAX_STRUCT_SIZE_BYTES);
-		inputBuffer.order(ByteOrder.nativeOrder());
 		
 		absLX = new EvdevAbsolute(device, mapping.abs_x, mapping.reverse_x);
 		absLY = new EvdevAbsolute(device, mapping.abs_y, !mapping.reverse_y);
@@ -62,15 +45,9 @@ public class EvdevHandler implements Runnable {
 		
 		translator = new KeyboardTranslator(conn);
 	}
-	
-	public void start() {
-		Thread thread = new Thread(this);
-		thread.setDaemon(true);
-		thread.setName("Input - Receiver");
-		thread.start();
-	}
-	
-	private void parseEvent(ByteBuffer buffer) {
+
+	@Override
+	protected void parseEvent(ByteBuffer buffer) {
 		if (buffer.limit()==EvdevConstants.MAX_STRUCT_SIZE_BYTES) {
 			long time_sec = buffer.getLong();
 			long time_usec = buffer.getLong();
@@ -214,21 +191,5 @@ public class EvdevHandler implements Runnable {
 			return 0;
 		}
 	}
-
-	@Override
-	public void run() {
-		try {
-			while (true) {
-				while(inputBuffer.remaining()==EvdevConstants.MAX_STRUCT_SIZE_BYTES)
-					deviceInput.read(inputBuffer);
-
-				inputBuffer.flip();
-				parseEvent(inputBuffer);
-				inputBuffer.clear();
-			}
-		} catch (IOException e) {
-			LimeLog.warning("Input device removed");
-		}
-	}
 	
 }

src/com/limelight/input/EvdevReader.java

@@ -0,0 +1,55 @@
+package com.limelight.input;
+
+import com.limelight.LimeLog;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.channels.FileChannel;
+
+public abstract class EvdevReader implements Runnable {
+	
+	private FileChannel deviceInput;
+	private ByteBuffer inputBuffer;
+
+	public EvdevReader(String device) throws FileNotFoundException, IOException {
+		File file = new File(device);
+		if (!file.exists())
+			throw new FileNotFoundException("File " + device + " not found");
+		if (!file.canRead())
+			throw new IOException("Can't read from " + device);
+			
+		FileInputStream in = new FileInputStream(file);
+        deviceInput = in.getChannel();
+		inputBuffer = ByteBuffer.allocate(EvdevConstants.MAX_STRUCT_SIZE_BYTES);
+		inputBuffer.order(ByteOrder.nativeOrder());
+	}
+	
+	public void start() {
+		Thread thread = new Thread(this);
+		thread.setDaemon(true);
+		thread.setName("Input - Receiver");
+		thread.start();
+	}
+	
+	protected abstract void parseEvent(ByteBuffer buffer);
+	
+	@Override
+	public void run() {
+		try {
+			while (true) {
+				while(inputBuffer.remaining()==EvdevConstants.MAX_STRUCT_SIZE_BYTES)
+					deviceInput.read(inputBuffer);
+
+				inputBuffer.flip();
+				parseEvent(inputBuffer);
+				inputBuffer.clear();
+			}
+		} catch (IOException e) {
+			LimeLog.warning("Input device removed");
+		}
+	}
+
+}

src/com/limelight/input/GamepadMapper.java

@@ -0,0 +1,137 @@
+package com.limelight.input;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Properties;
+
+public class GamepadMapper extends EvdevReader {
+	
+	private Properties props;
+	private Map<Short, EvdevAbsolute> absolutes;
+	private String device;
+	
+	private String key;
+	private String abs;
+	private boolean dir;
+	
+	private short current;
+	private boolean reverse;
+	private boolean lastKey;
+
+	public GamepadMapper(String device) throws FileNotFoundException, IOException {
+		super(device);
+		this.device = device;
+		props = new Properties();
+		absolutes = new HashMap<>();
+		current = -1;
+	}
+
+	@Override
+	protected synchronized void parseEvent(ByteBuffer buffer) {
+		if (buffer.limit()==EvdevConstants.MAX_STRUCT_SIZE_BYTES) {
+			long time_sec = buffer.getLong();
+			long time_usec = buffer.getLong();
+		} else {
+			int time_sec = buffer.getInt();
+			int time_usec = buffer.getInt();
+		}
+		short type = buffer.getShort();
+		short code = buffer.getShort();
+		int value = buffer.getInt();
+		
+		boolean set = false;
+		if (key != null && type == EvdevConstants.EV_KEY && value == EvdevConstants.KEY_RELEASED) {
+			props.put("btn_"+key, Short.toString(code));
+			lastKey = true;
+			set = true;
+		} else if (abs != null && type == EvdevConstants.EV_ABS) {
+			if (!absolutes.containsKey(code))
+				absolutes.put(code, new EvdevAbsolute(device, code, false));
+			
+			int val = absolutes.get(code).getShort(value);
+			if (val > Short.MAX_VALUE * 0.75) {
+				current = code;
+				reverse = false;
+			} else if (dir && val < Short.MIN_VALUE * 0.75) {
+				current = code;
+				reverse = true;
+			} else if (current != -1 && code == current && val < Short.MAX_VALUE/4) {
+				props.put("abs_"+abs, Short.toString(code));
+				props.put("revers_"+abs, Boolean.toString(reverse));
+				lastKey = false;
+				set = true;
+			}
+		}
+		
+		if (set) {
+			key = null;
+			abs = null;
+			current = -1;
+			notify();		
+		}
+	}
+	
+	public synchronized void readKey(String key, String name) throws InterruptedException {
+		System.out.println(name);
+		this.key = key;
+		wait();
+	}
+	
+	public synchronized void readAbs(String abs, String name) throws InterruptedException {
+		System.out.println(name);
+		this.abs = abs;
+		dir = true;
+		wait();
+	}
+	
+	public synchronized void readAbsKey(String abs, String key, String name, boolean dir) throws InterruptedException {
+		System.out.println("Read " + name);
+		this.key = key;
+		this.abs = abs;
+		this.dir = dir;
+		wait();
+	}
+	
+	public void setup() throws InterruptedException {
+		start();
+		readAbs("x", "Left Stick Right");
+		readAbs("y", "Left Stick Down");
+		readKey("thumbl", "Left Stick Button");
+		
+		readAbs("rx", "Right Stick Right");
+		readAbs("ry", "Right Stick Down");
+		readKey("thumbr", "Right Stick Button");
+		
+		readAbsKey("dpad_x", "dpad_right", "D-Pad Right", true);
+		if (lastKey)
+			readKey("dpad_left", "D-Pad Left");
+		
+		readAbsKey("dpad_y", "dpad_down", "D-Pad Down", true);
+		if (lastKey)
+			readKey("dpad_up", "D-Pad Up");
+		
+		readKey("south", "Button 1 (A)");
+		readKey("easth", "Button 2 (X)");
+		readKey("north", "Button 3 (Y)");
+		readKey("west", "Button 3 (B)");
+		readKey("select", "Back Button");
+		readKey("start", "Start Button");
+		readKey("mode", "Special Button");
+		
+		readAbsKey("z", "tl", "Left Trigger", false);
+		readAbsKey("rz", "tr", "Right Trigger", false);
+		
+		readKey("tl2", "Left Bumper");
+		readKey("tr2", "Right Bumper");
+		
+	}
+	
+	public void save(File file) throws FileNotFoundException, IOException {
+		props.store(new FileOutputStream(file), "Gamepad");
+	}	
+}