Initial migration to Android Studio

app/src/main/java/com/limelight/binding/PlatformBinding.java

@@ -0,0 +1,24 @@
+package com.limelight.binding;
+
+import android.content.Context;
+
+import com.limelight.binding.audio.AndroidAudioRenderer;
+import com.limelight.binding.crypto.AndroidCryptoProvider;
+import com.limelight.nvstream.av.audio.AudioRenderer;
+import com.limelight.nvstream.http.LimelightCryptoProvider;
+
+public class PlatformBinding {
+	public static String getDeviceName() {
+		String deviceName = android.os.Build.MODEL;
+        deviceName = deviceName.replace(" ", "");
+        return deviceName;
+	}
+	
+	public static AudioRenderer getAudioRenderer() {
+		return new AndroidAudioRenderer();
+	}
+	
+	public static LimelightCryptoProvider getCryptoProvider(Context c) {
+		return new AndroidCryptoProvider(c);
+	}
+}

app/src/main/java/com/limelight/binding/audio/AndroidAudioRenderer.java

@@ -0,0 +1,70 @@
+package com.limelight.binding.audio;
+
+import android.media.AudioFormat;
+import android.media.AudioManager;
+import android.media.AudioTrack;
+
+import com.limelight.LimeLog;
+import com.limelight.nvstream.av.audio.AudioRenderer;
+
+public class AndroidAudioRenderer implements AudioRenderer {
+
+	public static final int FRAME_SIZE = 960;
+	
+	private AudioTrack track;
+
+	@Override
+	public boolean streamInitialized(int channelCount, int sampleRate) {
+		int channelConfig;
+		int bufferSize;
+
+		switch (channelCount)
+		{
+		case 1:
+			channelConfig = AudioFormat.CHANNEL_OUT_MONO;
+			break;
+		case 2:
+			channelConfig = AudioFormat.CHANNEL_OUT_STEREO;
+			break;
+		default:
+			LimeLog.severe("Decoder returned unhandled channel count");
+			return false;
+		}
+
+		bufferSize = Math.max(AudioTrack.getMinBufferSize(sampleRate,
+				channelConfig,
+				AudioFormat.ENCODING_PCM_16BIT),
+				FRAME_SIZE * 2);
+		
+		// Round to next frame
+		bufferSize = (((bufferSize + (FRAME_SIZE - 1)) / FRAME_SIZE) * FRAME_SIZE);
+		
+		LimeLog.info("Audio track buffer size: "+bufferSize);
+		track = new AudioTrack(AudioManager.STREAM_MUSIC,
+				sampleRate,
+				channelConfig,
+				AudioFormat.ENCODING_PCM_16BIT,
+				bufferSize,
+				AudioTrack.MODE_STREAM);
+
+		track.play();
+		return true;
+	}
+
+	@Override
+	public void playDecodedAudio(byte[] audioData, int offset, int length) {
+		track.write(audioData, offset, length);
+	}
+
+	@Override
+	public void streamClosing() {
+		if (track != null) {
+			track.release();
+		}
+	}
+
+	@Override
+	public int getCapabilities() {
+		return 0;
+	}
+}

app/src/main/java/com/limelight/binding/crypto/AndroidCryptoProvider.java

@@ -0,0 +1,280 @@
+package com.limelight.binding.crypto;
+
+import java.io.ByteArrayInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStreamWriter;
+import java.io.StringWriter;
+import java.math.BigInteger;
+import java.security.KeyFactory;
+import java.security.KeyPair;
+import java.security.KeyPairGenerator;
+import java.security.NoSuchAlgorithmException;
+import java.security.NoSuchProviderException;
+import java.security.SecureRandom;
+import java.security.Security;
+import java.security.cert.CertificateException;
+import java.security.cert.CertificateFactory;
+import java.security.cert.X509Certificate;
+import java.security.interfaces.RSAPrivateKey;
+import java.security.spec.InvalidKeySpecException;
+import java.security.spec.PKCS8EncodedKeySpec;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.Locale;
+
+import org.bouncycastle.asn1.x500.X500Name;
+import org.bouncycastle.asn1.x500.X500NameBuilder;
+import org.bouncycastle.asn1.x500.style.BCStyle;
+import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo;
+import org.bouncycastle.cert.X509v3CertificateBuilder;
+import org.bouncycastle.cert.jcajce.JcaX509CertificateConverter;
+import org.bouncycastle.jce.provider.BouncyCastleProvider;
+import org.bouncycastle.openssl.jcajce.JcaPEMWriter;
+import org.bouncycastle.operator.ContentSigner;
+import org.bouncycastle.operator.jcajce.JcaContentSignerBuilder;
+
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.util.Base64;
+
+import com.limelight.LimeLog;
+import com.limelight.nvstream.http.LimelightCryptoProvider;
+
+public class AndroidCryptoProvider implements LimelightCryptoProvider {
+
+	private File certFile;
+	private File keyFile;
+	
+	private X509Certificate cert;
+	private RSAPrivateKey key;
+	private byte[] pemCertBytes;
+	
+	private static Object globalCryptoLock = new Object();
+	
+	static {
+		// Install the Bouncy Castle provider
+		Security.addProvider(new BouncyCastleProvider());
+	}
+	
+	public AndroidCryptoProvider(Context c) {
+		String dataPath = c.getFilesDir().getAbsolutePath();
+		
+		certFile = new File(dataPath + File.separator + "client.crt");
+		keyFile = new File(dataPath + File.separator + "client.key");
+	}
+	
+	private byte[] loadFileToBytes(File f) {
+		if (!f.exists()) {
+			return null;
+		}
+		
+		try {
+			FileInputStream fin = new FileInputStream(f);
+			byte[] fileData = new byte[(int) f.length()];
+			fin.read(fileData);
+			fin.close();
+			return fileData;
+		} catch (IOException e) {
+			return null;
+		}
+	}
+	
+	private boolean loadCertKeyPair() {
+		byte[] certBytes = loadFileToBytes(certFile);
+		byte[] keyBytes = loadFileToBytes(keyFile);
+		
+		// If either file was missing, we definitely can't succeed
+		if (certBytes == null || keyBytes == null) {
+			LimeLog.info("Missing cert or key; need to generate a new one");
+			return false;
+		}
+		
+		try {
+			CertificateFactory certFactory = CertificateFactory.getInstance("X.509", "BC");
+			cert = (X509Certificate) certFactory.generateCertificate(new ByteArrayInputStream(certBytes));
+			pemCertBytes = certBytes;
+			KeyFactory keyFactory = KeyFactory.getInstance("RSA", "BC");
+			key = (RSAPrivateKey) keyFactory.generatePrivate(new PKCS8EncodedKeySpec(keyBytes));
+		} catch (CertificateException e) {
+			// May happen if the cert is corrupt
+			LimeLog.warning("Corrupted certificate");
+			return false;
+		} catch (NoSuchAlgorithmException e) {
+			// Should never happen
+			e.printStackTrace();
+			return false;
+		} catch (InvalidKeySpecException e) {
+			// May happen if the key is corrupt
+			LimeLog.warning("Corrupted key");
+			return false;
+		} catch (NoSuchProviderException e) {
+			// Should never happen
+			e.printStackTrace();
+			return false;
+		}
+		
+		return true;
+	}
+	
+	@SuppressLint("TrulyRandom")
+	private boolean generateCertKeyPair() {
+		byte[] snBytes = new byte[8];
+		new SecureRandom().nextBytes(snBytes);
+		
+		KeyPair keyPair;
+		try {
+			KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA", "BC");
+			keyPairGenerator.initialize(2048);
+			keyPair = keyPairGenerator.generateKeyPair();
+		} catch (NoSuchAlgorithmException e1) {
+			// Should never happen
+			e1.printStackTrace();
+			return false;
+		} catch (NoSuchProviderException e) {
+			// Should never happen
+			e.printStackTrace();
+			return false;
+		}
+		
+		Date now = new Date();
+		
+		// Expires in 20 years
+		Calendar calendar = Calendar.getInstance();
+		calendar.setTime(now);
+		calendar.add(Calendar.YEAR, 20);
+		Date expirationDate = calendar.getTime();
+		
+		BigInteger serial = new BigInteger(snBytes).abs();
+		
+		X500NameBuilder nameBuilder = new X500NameBuilder(BCStyle.INSTANCE);
+		nameBuilder.addRDN(BCStyle.CN, "NVIDIA GameStream Client");
+		X500Name name = nameBuilder.build();
+		
+		X509v3CertificateBuilder certBuilder = new X509v3CertificateBuilder(name, serial, now, expirationDate, Locale.ENGLISH, name,
+			SubjectPublicKeyInfo.getInstance(keyPair.getPublic().getEncoded()));
+				
+		try {
+			ContentSigner sigGen = new JcaContentSignerBuilder("SHA1withRSA").setProvider(BouncyCastleProvider.PROVIDER_NAME).build(keyPair.getPrivate());
+			cert = new JcaX509CertificateConverter().setProvider(BouncyCastleProvider.PROVIDER_NAME).getCertificate(certBuilder.build(sigGen));
+			key = (RSAPrivateKey) keyPair.getPrivate();
+		} catch (Exception e) {
+			// Nothing should go wrong here
+			e.printStackTrace();
+			return false;
+		}
+		
+		LimeLog.info("Generated a new key pair");
+		
+		// Save the resulting pair
+		saveCertKeyPair();
+		
+		return true;
+	}
+	
+	private void saveCertKeyPair() {
+		try {
+			FileOutputStream certOut = new FileOutputStream(certFile);
+			FileOutputStream keyOut = new FileOutputStream(keyFile);
+			
+			// Write the certificate in OpenSSL PEM format (important for the server)
+			StringWriter strWriter = new StringWriter();
+			JcaPEMWriter pemWriter = new JcaPEMWriter(strWriter);
+			pemWriter.writeObject(cert);
+			pemWriter.close();
+			
+			// Line endings MUST be UNIX for the PC to accept the cert properly
+			OutputStreamWriter certWriter = new OutputStreamWriter(certOut);
+			String pemStr = strWriter.getBuffer().toString();
+			for (int i = 0; i < pemStr.length(); i++) {
+				char c = pemStr.charAt(i);
+				if (c != '\r')
+					certWriter.append(c);
+			}
+			certWriter.close();
+			
+			// Write the private out in PKCS8 format
+			keyOut.write(key.getEncoded());
+			
+			certOut.close();
+			keyOut.close();
+			
+			LimeLog.info("Saved generated key pair to disk");
+		} catch (IOException e) {
+			// This isn't good because it means we'll have
+			// to re-pair next time
+			e.printStackTrace();
+		}
+	}
+	
+	public X509Certificate getClientCertificate() {
+		// Use a lock here to ensure only one guy will be generating or loading
+		// the certificate and key at a time
+		synchronized (globalCryptoLock) {
+			// Return a loaded cert if we have one
+			if (cert != null) {
+				return cert;
+			}
+			
+			// No loaded cert yet, let's see if we have one on disk
+			if (loadCertKeyPair()) {
+				// Got one
+				return cert;
+			}
+			
+			// Try to generate a new key pair
+			if (!generateCertKeyPair()) {
+				// Failed
+				return null;
+			}
+			
+			// Load the generated pair
+			loadCertKeyPair();
+			return cert;
+		}
+	}
+
+	public RSAPrivateKey getClientPrivateKey() {
+		// Use a lock here to ensure only one guy will be generating or loading
+		// the certificate and key at a time
+		synchronized (globalCryptoLock) {
+			// Return a loaded key if we have one
+			if (key != null) {
+				return key;
+			}
+			
+			// No loaded key yet, let's see if we have one on disk
+			if (loadCertKeyPair()) {
+				// Got one
+				return key;
+			}
+			
+			// Try to generate a new key pair
+			if (!generateCertKeyPair()) {
+				// Failed
+				return null;
+			}
+			
+			// Load the generated pair
+			loadCertKeyPair();
+			return key;
+		}
+	}
+	
+	public byte[] getPemEncodedClientCertificate() {
+		synchronized (globalCryptoLock) {
+			// Call our helper function to do the cert loading/generation for us
+			getClientCertificate();
+			
+			// Return a cached value if we have it
+			return pemCertBytes;
+		}
+	}
+
+	@Override
+	public String encodeBase64String(byte[] data) {
+		return Base64.encodeToString(data, Base64.NO_WRAP);
+	}
+}

app/src/main/java/com/limelight/binding/input/ControllerHandler.java

@@ -0,0 +1,642 @@
+package com.limelight.binding.input;
+
+import java.util.HashMap;
+
+import android.os.SystemClock;
+import android.view.InputDevice;
+import android.view.KeyEvent;
+import android.view.MotionEvent;
+
+import com.limelight.nvstream.NvConnection;
+import com.limelight.nvstream.input.ControllerPacket;
+import com.limelight.utils.Vector2d;
+
+public class ControllerHandler {
+	private short inputMap = 0x0000;
+	private byte leftTrigger = 0x00;
+	private byte rightTrigger = 0x00;
+	private short rightStickX = 0x0000;
+	private short rightStickY = 0x0000;
+	private short leftStickX = 0x0000;
+	private short leftStickY = 0x0000;
+	private int emulatingButtonFlags = 0;
+	
+	// Used for OUYA bumper state tracking since they force all buttons
+	// up when the OUYA button goes down. We watch the last time we get
+	// a bumper up and compare that to our maximum delay when we receive
+	// a Start button press to see if we should activate one of our 
+	// emulated button combos.
+	private long lastLbUpTime = 0;
+	private long lastRbUpTime = 0;
+	private static final int MAXIMUM_BUMPER_UP_DELAY_MS = 100;
+	
+	private static final int MINIMUM_BUTTON_DOWN_TIME_MS = 25;
+	
+	private static final int EMULATING_SPECIAL = 0x1;
+	private static final int EMULATING_SELECT = 0x2;
+	
+	private static final int EMULATED_SPECIAL_UP_DELAY_MS = 100;
+	private static final int EMULATED_SELECT_UP_DELAY_MS = 30;
+	
+	private Vector2d inputVector = new Vector2d();
+	private Vector2d normalizedInputVector = new Vector2d();
+	
+	private HashMap<String, ControllerMapping> mappings = new HashMap<String, ControllerMapping>();
+	
+	private NvConnection conn;
+	
+	public ControllerHandler(NvConnection conn) {
+		this.conn = conn;
+		
+		// We want limelight-common to scale the axis values to match Xinput values
+		ControllerPacket.enableAxisScaling = true;
+	}
+	
+	private static InputDevice.MotionRange getMotionRangeForJoystickAxis(InputDevice dev, int axis) {
+		InputDevice.MotionRange range;
+		
+		// First get the axis for SOURCE_JOYSTICK
+		range = dev.getMotionRange(axis, InputDevice.SOURCE_JOYSTICK);
+		if (range == null) {
+			// Now try the axis for SOURCE_GAMEPAD
+			range = dev.getMotionRange(axis, InputDevice.SOURCE_GAMEPAD);
+		}
+		
+		return range;
+	}
+	
+	private ControllerMapping createMappingForDevice(InputDevice dev) {
+		ControllerMapping mapping = new ControllerMapping();
+		
+		mapping.leftStickXAxis = MotionEvent.AXIS_X;
+		mapping.leftStickYAxis = MotionEvent.AXIS_Y;
+		
+		InputDevice.MotionRange leftTriggerRange = getMotionRangeForJoystickAxis(dev, MotionEvent.AXIS_LTRIGGER);
+		InputDevice.MotionRange rightTriggerRange = getMotionRangeForJoystickAxis(dev, MotionEvent.AXIS_RTRIGGER);
+		InputDevice.MotionRange brakeRange = getMotionRangeForJoystickAxis(dev, MotionEvent.AXIS_BRAKE);
+		InputDevice.MotionRange gasRange = getMotionRangeForJoystickAxis(dev, MotionEvent.AXIS_GAS);
+		if (leftTriggerRange != null && rightTriggerRange != null)
+		{
+			// Some controllers use LTRIGGER and RTRIGGER (like Ouya)
+			mapping.leftTriggerAxis = MotionEvent.AXIS_LTRIGGER;
+			mapping.rightTriggerAxis = MotionEvent.AXIS_RTRIGGER;
+		}
+		else if (brakeRange != null && gasRange != null)
+		{
+			// Others use GAS and BRAKE (like Moga)
+			mapping.leftTriggerAxis = MotionEvent.AXIS_BRAKE;
+			mapping.rightTriggerAxis = MotionEvent.AXIS_GAS;
+		}
+		else
+		{
+			InputDevice.MotionRange rxRange = getMotionRangeForJoystickAxis(dev, MotionEvent.AXIS_RX);
+			InputDevice.MotionRange ryRange = getMotionRangeForJoystickAxis(dev, MotionEvent.AXIS_RY);
+			if (rxRange != null && ryRange != null) {
+				String devName = dev.getName();
+				if (devName.contains("Xbox") || devName.contains("XBox") || devName.contains("X-Box")) {
+					// Xbox controllers use RX and RY for right stick
+					mapping.rightStickXAxis = MotionEvent.AXIS_RX;
+					mapping.rightStickYAxis = MotionEvent.AXIS_RY;
+					
+					// Xbox controllers use Z and RZ for triggers
+					mapping.leftTriggerAxis = MotionEvent.AXIS_Z;
+					mapping.rightTriggerAxis = MotionEvent.AXIS_RZ;
+					mapping.triggersIdleNegative = true;
+					mapping.isXboxController = true;
+				}
+				else {
+					// DS4 controller uses RX and RY for triggers
+					mapping.leftTriggerAxis = MotionEvent.AXIS_RX;
+					mapping.rightTriggerAxis = MotionEvent.AXIS_RY;
+					mapping.triggersIdleNegative = true;
+					
+					mapping.isDualShock4 = true;
+				}
+			}
+		}
+		
+		if (mapping.rightStickXAxis == -1 && mapping.rightStickYAxis == -1) {
+			InputDevice.MotionRange zRange = getMotionRangeForJoystickAxis(dev, MotionEvent.AXIS_Z);
+			InputDevice.MotionRange rzRange = getMotionRangeForJoystickAxis(dev, MotionEvent.AXIS_RZ);
+			
+			// Most other controllers use Z and RZ for the right stick
+			if (zRange != null && rzRange != null) {
+				mapping.rightStickXAxis = MotionEvent.AXIS_Z;
+				mapping.rightStickYAxis = MotionEvent.AXIS_RZ;
+			}
+			else {
+				InputDevice.MotionRange rxRange = getMotionRangeForJoystickAxis(dev, MotionEvent.AXIS_RX);
+				InputDevice.MotionRange ryRange = getMotionRangeForJoystickAxis(dev, MotionEvent.AXIS_RY);
+				
+				// Try RX and RY now
+				if (rxRange != null && ryRange != null) {
+					mapping.rightStickXAxis = MotionEvent.AXIS_RX;
+					mapping.rightStickYAxis = MotionEvent.AXIS_RY;
+				}
+			}
+		}
+		
+		// Some devices have "hats" for d-pads
+		InputDevice.MotionRange hatXRange = getMotionRangeForJoystickAxis(dev, MotionEvent.AXIS_HAT_X);
+		InputDevice.MotionRange hatYRange = getMotionRangeForJoystickAxis(dev, MotionEvent.AXIS_HAT_Y);
+		if (hatXRange != null && hatYRange != null) {
+			mapping.hatXAxis = MotionEvent.AXIS_HAT_X;
+			mapping.hatYAxis = MotionEvent.AXIS_HAT_Y;
+			
+			mapping.hatXDeadzone = hatXRange.getFlat();
+			mapping.hatYDeadzone = hatYRange.getFlat();
+		}
+		
+		if (mapping.leftStickXAxis != -1 && mapping.leftStickYAxis != -1) {
+			InputDevice.MotionRange lsXRange = getMotionRangeForJoystickAxis(dev, mapping.leftStickXAxis);
+			InputDevice.MotionRange lsYRange = getMotionRangeForJoystickAxis(dev, mapping.leftStickYAxis);
+			if (lsXRange != null && lsYRange != null) {
+				// The flat values should never be negative but we'll deal with it if they are
+				mapping.leftStickDeadzoneRadius = Math.max(Math.abs(lsXRange.getFlat()),
+						Math.abs(lsYRange.getFlat()));
+				
+				// Some devices (certain OUYAs at least) report a deadzone that's larger
+				// than the entire range of their axis likely due to some system software bug.
+				// If we see a very large deadzone, simply ignore the value and use our default.
+				if (mapping.leftStickDeadzoneRadius > 0.5f) {
+					mapping.leftStickDeadzoneRadius = 0;
+				}
+				
+				// If there isn't a (reasonable) deadzone at all, use 20%
+				if (mapping.leftStickDeadzoneRadius < 0.02f) {
+					mapping.leftStickDeadzoneRadius = 0.20f;
+				}
+				// Check that the deadzone is 15% at minimum
+				else if (mapping.leftStickDeadzoneRadius < 0.15f) {
+					mapping.leftStickDeadzoneRadius = 0.15f;
+				}
+			}
+		}
+		
+		if (mapping.rightStickXAxis != -1 && mapping.rightStickYAxis != -1) {
+			InputDevice.MotionRange rsXRange = getMotionRangeForJoystickAxis(dev, mapping.rightStickXAxis);
+			InputDevice.MotionRange rsYRange = getMotionRangeForJoystickAxis(dev, mapping.rightStickYAxis);
+			if (rsXRange != null && rsYRange != null) {
+				// The flat values should never be negative but we'll deal with it if they are
+				mapping.rightStickDeadzoneRadius = Math.max(Math.abs(rsXRange.getFlat()),
+						Math.abs(rsYRange.getFlat()));
+				
+				// Some devices (certain OUYAs at least) report a deadzone that's larger
+				// than the entire range of their axis likely due to some system software bug.
+				// If we see a very large deadzone, simply ignore the value and use our default.
+				if (mapping.rightStickDeadzoneRadius > 0.5f) {
+					mapping.rightStickDeadzoneRadius = 0;
+				}
+				
+				// If there isn't a (reasonable) deadzone at all, use 20%
+				if (mapping.rightStickDeadzoneRadius < 0.02f) {
+					mapping.rightStickDeadzoneRadius = 0.20f;
+				}
+				// Check that the deadzone is 15% at minimum
+				else if (mapping.rightStickDeadzoneRadius < 0.15f) {
+					mapping.rightStickDeadzoneRadius = 0.15f;
+				}
+			}
+		}
+		
+		return mapping;
+	}
+	
+	private ControllerMapping getMappingForDevice(InputDevice dev) {
+		// Unknown devices can't be handled
+		if (dev == null) {
+			return null;
+		}
+		
+		String descriptor = dev.getDescriptor();
+		
+		// Return the existing mapping if it exists
+		ControllerMapping mapping = mappings.get(descriptor);
+		if (mapping != null) {
+			return mapping;
+		}
+		
+		// Otherwise create a new mapping
+		mapping = createMappingForDevice(dev);
+		mappings.put(descriptor, mapping);
+		
+		return mapping;
+	}
+	
+	private void sendControllerInputPacket() {
+		conn.sendControllerInput(inputMap, leftTrigger, rightTrigger,
+				leftStickX, leftStickY, rightStickX, rightStickY);
+	}
+	
+	private static int handleRemapping(ControllerMapping mapping, KeyEvent event) {
+		if (mapping.isDualShock4) {
+			switch (event.getKeyCode()) {
+			case KeyEvent.KEYCODE_BUTTON_Y:
+				return KeyEvent.KEYCODE_BUTTON_L1;
+				
+			case KeyEvent.KEYCODE_BUTTON_Z:
+				return KeyEvent.KEYCODE_BUTTON_R1;
+				
+			case KeyEvent.KEYCODE_BUTTON_C:
+				return KeyEvent.KEYCODE_BUTTON_B;
+				
+			case KeyEvent.KEYCODE_BUTTON_X:
+				return KeyEvent.KEYCODE_BUTTON_Y;
+				
+			case KeyEvent.KEYCODE_BUTTON_B:
+				return KeyEvent.KEYCODE_BUTTON_A;
+				
+			case KeyEvent.KEYCODE_BUTTON_A:
+				return KeyEvent.KEYCODE_BUTTON_X;
+				
+			case KeyEvent.KEYCODE_BUTTON_SELECT:
+				return KeyEvent.KEYCODE_BUTTON_THUMBL;
+				
+			case KeyEvent.KEYCODE_BUTTON_START:
+				return KeyEvent.KEYCODE_BUTTON_THUMBR;
+				
+			case KeyEvent.KEYCODE_BUTTON_L2:
+				return KeyEvent.KEYCODE_BUTTON_SELECT;
+				
+			case KeyEvent.KEYCODE_BUTTON_R2:
+				return KeyEvent.KEYCODE_BUTTON_START;
+				
+			// These are duplicate trigger events
+			case KeyEvent.KEYCODE_BUTTON_R1:
+			case KeyEvent.KEYCODE_BUTTON_L1:
+				return 0;
+			}
+		}
+		
+		if (mapping.hatXAxis != -1 && mapping.hatYAxis != -1) {
+			switch (event.getKeyCode()) {
+			// These are duplicate dpad events for hat input
+			case KeyEvent.KEYCODE_DPAD_LEFT:
+			case KeyEvent.KEYCODE_DPAD_RIGHT:
+			case KeyEvent.KEYCODE_DPAD_CENTER:
+			case KeyEvent.KEYCODE_DPAD_UP:
+			case KeyEvent.KEYCODE_DPAD_DOWN:
+				return 0;
+			}
+		}
+		else if (mapping.hatXAxis == -1 &&
+				 mapping.hatYAxis == -1 &&
+				 mapping.isXboxController &&
+				 event.getKeyCode() == KeyEvent.KEYCODE_UNKNOWN) {
+			// If there's not a proper Xbox controller mapping, we'll translate the raw d-pad
+			// scan codes into proper key codes
+			switch (event.getScanCode())
+			{
+			case 704:
+				return KeyEvent.KEYCODE_DPAD_LEFT;
+			case 705:
+				return KeyEvent.KEYCODE_DPAD_RIGHT;
+			case 706:
+				return KeyEvent.KEYCODE_DPAD_UP;
+			case 707:
+				return KeyEvent.KEYCODE_DPAD_DOWN;
+			}
+		}
+		
+		return event.getKeyCode();
+	}
+	
+	private Vector2d handleDeadZone(float x, float y, float deadzoneRadius) {
+		// Reinitialize our cached Vector2d object
+		inputVector.initialize(x, y);
+		
+		if (inputVector.getMagnitude() <= deadzoneRadius) {
+			// Deadzone -- return the zero vector
+			return Vector2d.ZERO;
+		}
+		else {			
+			// Scale the input based on the distance from the deadzone
+			inputVector.getNormalized(normalizedInputVector);
+			normalizedInputVector.scalarMultiply((inputVector.getMagnitude() - deadzoneRadius) / (1.0f - deadzoneRadius));
+		
+			// Bound the X value to -1.0 to 1.0
+			if (normalizedInputVector.getX() > 1.0f) {
+				normalizedInputVector.setX(1.0f);
+			}
+			else if (normalizedInputVector.getX() < -1.0f) {
+				normalizedInputVector.setX(-1.0f);
+			}
+			
+			// Bound the Y value to -1.0 to 1.0
+			if (normalizedInputVector.getY() > 1.0f) {
+				normalizedInputVector.setY(1.0f);
+			}
+			else if (normalizedInputVector.getY() < -1.0f) {
+				normalizedInputVector.setY(-1.0f);
+			}
+			
+			return normalizedInputVector;
+		}
+	}
+	
+	public boolean handleMotionEvent(MotionEvent event) {
+		ControllerMapping mapping = getMappingForDevice(event.getDevice());
+		if (mapping == null) {
+			return false;
+		}
+		
+		// Handle left stick events outside of the deadzone
+		if (mapping.leftStickXAxis != -1 && mapping.leftStickYAxis != -1) {
+			Vector2d leftStickVector = handleDeadZone(event.getAxisValue(mapping.leftStickXAxis),
+					event.getAxisValue(mapping.leftStickYAxis), mapping.leftStickDeadzoneRadius);
+			
+			leftStickX = (short)(leftStickVector.getX() * 0x7FFE);
+			leftStickY = (short)(-leftStickVector.getY() * 0x7FFE);
+		}
+		
+		// Handle right stick events outside of the deadzone
+		if (mapping.rightStickXAxis != -1 && mapping.rightStickYAxis != -1) {
+			Vector2d rightStickVector = handleDeadZone(event.getAxisValue(mapping.rightStickXAxis),
+					event.getAxisValue(mapping.rightStickYAxis), mapping.rightStickDeadzoneRadius);
+			
+			rightStickX = (short)(rightStickVector.getX() * 0x7FFE);
+			rightStickY = (short)(-rightStickVector.getY() * 0x7FFE);
+		}
+		
+		// Handle controllers with analog triggers
+		if (mapping.leftTriggerAxis != -1 && mapping.rightTriggerAxis != -1) {
+			float L2 = event.getAxisValue(mapping.leftTriggerAxis);
+			float R2 = event.getAxisValue(mapping.rightTriggerAxis);
+			
+			if (mapping.triggersIdleNegative) {
+				L2 = (L2 + 1) / 2;
+				R2 = (R2 + 1) / 2;
+			}
+			
+			leftTrigger = (byte)(L2 * 0xFF);
+			rightTrigger = (byte)(R2 * 0xFF);
+		}
+
+		// Hats emulate d-pad events
+		if (mapping.hatXAxis != -1 && mapping.hatYAxis != -1) {
+			float hatX = event.getAxisValue(MotionEvent.AXIS_HAT_X);
+			float hatY = event.getAxisValue(MotionEvent.AXIS_HAT_Y);
+
+			inputMap &= ~(ControllerPacket.LEFT_FLAG | ControllerPacket.RIGHT_FLAG);
+			if (hatX < -(0.5 + mapping.hatXDeadzone)) {
+				inputMap |= ControllerPacket.LEFT_FLAG;
+			}
+			else if (hatX > (0.5 + mapping.hatXDeadzone)) {
+				inputMap |= ControllerPacket.RIGHT_FLAG;
+			}
+			
+			inputMap &= ~(ControllerPacket.UP_FLAG | ControllerPacket.DOWN_FLAG);
+			if (hatY < -(0.5 + mapping.hatYDeadzone)) {
+				inputMap |= ControllerPacket.UP_FLAG;
+			}
+			else if (hatY > (0.5 + mapping.hatYDeadzone)) {
+				inputMap |= ControllerPacket.DOWN_FLAG;
+			}
+		}
+
+		sendControllerInputPacket();
+		return true;
+	}
+	
+	public boolean handleButtonUp(int keyCode, KeyEvent event) {
+		ControllerMapping mapping = getMappingForDevice(event.getDevice());
+		if (mapping == null) {
+			return false;
+		}
+		
+		keyCode = handleRemapping(mapping, event);
+		if (keyCode == 0) {
+			return true;
+		}
+		
+		// If the button hasn't been down long enough, sleep for a bit before sending the up event
+		// This allows "instant" button presses (like OUYA's virtual menu button) to work. This
+		// path should not be triggered during normal usage.
+		if (SystemClock.uptimeMillis() - event.getDownTime() < ControllerHandler.MINIMUM_BUTTON_DOWN_TIME_MS)
+		{
+			// Since our sleep time is so short (10 ms), it shouldn't cause a problem doing this in the
+			// UI thread.
+			try {
+				Thread.sleep(ControllerHandler.MINIMUM_BUTTON_DOWN_TIME_MS);
+			} catch (InterruptedException e) {}
+		}
+		
+		switch (keyCode) {
+		case KeyEvent.KEYCODE_BUTTON_MODE:
+			inputMap &= ~ControllerPacket.SPECIAL_BUTTON_FLAG;
+			break;
+		case KeyEvent.KEYCODE_BUTTON_START:
+		case KeyEvent.KEYCODE_MENU:
+			inputMap &= ~ControllerPacket.PLAY_FLAG;
+			break;
+		case KeyEvent.KEYCODE_BACK:
+		case KeyEvent.KEYCODE_BUTTON_SELECT:
+			inputMap &= ~ControllerPacket.BACK_FLAG;
+			break;
+		case KeyEvent.KEYCODE_DPAD_LEFT:
+			inputMap &= ~ControllerPacket.LEFT_FLAG;
+			break;
+		case KeyEvent.KEYCODE_DPAD_RIGHT:
+			inputMap &= ~ControllerPacket.RIGHT_FLAG;
+			break;
+		case KeyEvent.KEYCODE_DPAD_UP:
+			inputMap &= ~ControllerPacket.UP_FLAG;
+			break;
+		case KeyEvent.KEYCODE_DPAD_DOWN:
+			inputMap &= ~ControllerPacket.DOWN_FLAG;
+			break;
+		case KeyEvent.KEYCODE_BUTTON_B:
+			inputMap &= ~ControllerPacket.B_FLAG;
+			break;
+		case KeyEvent.KEYCODE_DPAD_CENTER:
+		case KeyEvent.KEYCODE_BUTTON_A:
+			inputMap &= ~ControllerPacket.A_FLAG;
+			break;
+		case KeyEvent.KEYCODE_BUTTON_X:
+			inputMap &= ~ControllerPacket.X_FLAG;
+			break;
+		case KeyEvent.KEYCODE_BUTTON_Y:
+			inputMap &= ~ControllerPacket.Y_FLAG;
+			break;
+		case KeyEvent.KEYCODE_BUTTON_L1:
+			inputMap &= ~ControllerPacket.LB_FLAG;
+			lastLbUpTime = SystemClock.uptimeMillis();
+			break;
+		case KeyEvent.KEYCODE_BUTTON_R1:
+			inputMap &= ~ControllerPacket.RB_FLAG;
+			lastRbUpTime = SystemClock.uptimeMillis();
+			break;
+		case KeyEvent.KEYCODE_BUTTON_THUMBL:
+			inputMap &= ~ControllerPacket.LS_CLK_FLAG;
+			break;
+		case KeyEvent.KEYCODE_BUTTON_THUMBR:
+			inputMap &= ~ControllerPacket.RS_CLK_FLAG;
+			break;
+		case KeyEvent.KEYCODE_BUTTON_L2:
+			leftTrigger = 0;
+			break;
+		case KeyEvent.KEYCODE_BUTTON_R2:
+			rightTrigger = 0;
+			break;
+		default:
+			return false;
+		}
+		
+		// Check if we're emulating the select button
+		if ((emulatingButtonFlags & ControllerHandler.EMULATING_SELECT) != 0)
+		{
+			// If either start or LB is up, select comes up too
+			if ((inputMap & ControllerPacket.PLAY_FLAG) == 0 ||
+				(inputMap & ControllerPacket.LB_FLAG) == 0)
+			{
+				inputMap &= ~ControllerPacket.BACK_FLAG;
+				
+				emulatingButtonFlags &= ~ControllerHandler.EMULATING_SELECT;
+				
+				try {
+					Thread.sleep(EMULATED_SELECT_UP_DELAY_MS);
+				} catch (InterruptedException e) {}
+			}
+		}
+		
+		// Check if we're emulating the special button
+		if ((emulatingButtonFlags & ControllerHandler.EMULATING_SPECIAL) != 0)
+		{
+			// If either start or select and RB is up, the special button comes up too
+			if ((inputMap & ControllerPacket.PLAY_FLAG) == 0 ||
+				((inputMap & ControllerPacket.BACK_FLAG) == 0 &&
+				 (inputMap & ControllerPacket.RB_FLAG) == 0))
+			{
+				inputMap &= ~ControllerPacket.SPECIAL_BUTTON_FLAG;
+				
+				emulatingButtonFlags &= ~ControllerHandler.EMULATING_SPECIAL;
+				
+				try {
+					Thread.sleep(EMULATED_SPECIAL_UP_DELAY_MS);
+				} catch (InterruptedException e) {}
+			}
+		}
+		
+		sendControllerInputPacket();
+		return true;
+	}
+	
+	public boolean handleButtonDown(int keyCode, KeyEvent event) {
+		ControllerMapping mapping = getMappingForDevice(event.getDevice());
+		if (mapping == null) {
+			return false;
+		}
+		
+		keyCode = handleRemapping(mapping, event);
+		if (keyCode == 0) {
+			return true;
+		}
+		
+		switch (keyCode) {
+		case KeyEvent.KEYCODE_BUTTON_MODE:
+			inputMap |= ControllerPacket.SPECIAL_BUTTON_FLAG;
+			break;
+		case KeyEvent.KEYCODE_BUTTON_START:
+		case KeyEvent.KEYCODE_MENU:
+			inputMap |= ControllerPacket.PLAY_FLAG;
+			break;
+		case KeyEvent.KEYCODE_BACK:
+		case KeyEvent.KEYCODE_BUTTON_SELECT:
+			inputMap |= ControllerPacket.BACK_FLAG;
+			break;
+		case KeyEvent.KEYCODE_DPAD_LEFT:
+			inputMap |= ControllerPacket.LEFT_FLAG;
+			break;
+		case KeyEvent.KEYCODE_DPAD_RIGHT:
+			inputMap |= ControllerPacket.RIGHT_FLAG;
+			break;
+		case KeyEvent.KEYCODE_DPAD_UP:
+			inputMap |= ControllerPacket.UP_FLAG;
+			break;
+		case KeyEvent.KEYCODE_DPAD_DOWN:
+			inputMap |= ControllerPacket.DOWN_FLAG;
+			break;
+		case KeyEvent.KEYCODE_BUTTON_B:
+			inputMap |= ControllerPacket.B_FLAG;
+			break;
+		case KeyEvent.KEYCODE_DPAD_CENTER:
+		case KeyEvent.KEYCODE_BUTTON_A:
+			inputMap |= ControllerPacket.A_FLAG;
+			break;
+		case KeyEvent.KEYCODE_BUTTON_X:
+			inputMap |= ControllerPacket.X_FLAG;
+			break;
+		case KeyEvent.KEYCODE_BUTTON_Y:
+			inputMap |= ControllerPacket.Y_FLAG;
+			break;
+		case KeyEvent.KEYCODE_BUTTON_L1:
+			inputMap |= ControllerPacket.LB_FLAG;
+			break;
+		case KeyEvent.KEYCODE_BUTTON_R1:
+			inputMap |= ControllerPacket.RB_FLAG;
+			break;
+		case KeyEvent.KEYCODE_BUTTON_THUMBL:
+			inputMap |= ControllerPacket.LS_CLK_FLAG;
+			break;
+		case KeyEvent.KEYCODE_BUTTON_THUMBR:
+			inputMap |= ControllerPacket.RS_CLK_FLAG;
+			break;
+		case KeyEvent.KEYCODE_BUTTON_L2:
+			leftTrigger = (byte)0xFF;
+			break;
+		case KeyEvent.KEYCODE_BUTTON_R2:
+			rightTrigger = (byte)0xFF;
+			break;
+		default:
+			return false;
+		}
+		
+		// Start+LB acts like select for controllers with one button
+		if ((inputMap & ControllerPacket.PLAY_FLAG) != 0 &&
+			((inputMap & ControllerPacket.LB_FLAG) != 0 ||
+			  SystemClock.uptimeMillis() - lastLbUpTime <= MAXIMUM_BUMPER_UP_DELAY_MS))
+		{
+			inputMap &= ~(ControllerPacket.PLAY_FLAG | ControllerPacket.LB_FLAG);
+			inputMap |= ControllerPacket.BACK_FLAG;
+			
+			emulatingButtonFlags |= ControllerHandler.EMULATING_SELECT;
+		}
+		
+		// We detect select+start or start+RB as the special button combo
+		if (((inputMap & ControllerPacket.RB_FLAG) != 0 ||
+			 (SystemClock.uptimeMillis() - lastRbUpTime <= MAXIMUM_BUMPER_UP_DELAY_MS) ||
+			 (inputMap & ControllerPacket.BACK_FLAG) != 0) &&
+			(inputMap & ControllerPacket.PLAY_FLAG) != 0)
+		{
+			inputMap &= ~(ControllerPacket.BACK_FLAG | ControllerPacket.PLAY_FLAG | ControllerPacket.RB_FLAG);
+			inputMap |= ControllerPacket.SPECIAL_BUTTON_FLAG;
+			
+			emulatingButtonFlags |= ControllerHandler.EMULATING_SPECIAL;
+		}
+		
+		sendControllerInputPacket();
+		return true;
+	}
+	
+	class ControllerMapping {
+		public int leftStickXAxis = -1;		
+		public int leftStickYAxis = -1;
+		public float leftStickDeadzoneRadius;
+
+		public int rightStickXAxis = -1;
+		public int rightStickYAxis = -1;
+		public float rightStickDeadzoneRadius;
+		
+		public int leftTriggerAxis = -1;
+		public int rightTriggerAxis = -1;
+		public boolean triggersIdleNegative;
+		
+		public int hatXAxis = -1;
+		public int hatYAxis = -1;
+		public float hatXDeadzone;
+		public float hatYDeadzone;
+		
+		public boolean isDualShock4;
+		public boolean isXboxController;
+	}
+}

app/src/main/java/com/limelight/binding/input/KeyboardTranslator.java

@@ -0,0 +1,260 @@
+package com.limelight.binding.input;
+
+import android.view.KeyEvent;
+
+import com.limelight.nvstream.NvConnection;
+import com.limelight.nvstream.input.KeycodeTranslator;
+
+/**
+ * Class to translate a Android key code into the codes GFE is expecting
+ * @author Diego Waxemberg
+ * @author Cameron Gutman
+ */
+public class KeyboardTranslator extends KeycodeTranslator {
+	
+	/**
+	 * GFE's prefix for every key code
+	 */
+	public static final short KEY_PREFIX = (short) 0x80;
+	
+	public static final int VK_0 = 48;
+	public static final int VK_9 = 57;
+	public static final int VK_A = 65;
+	public static final int VK_Z = 90;
+	public static final int VK_ALT = 18;
+	public static final int VK_NUMPAD0 = 96;
+	public static final int VK_BACK_SLASH = 92;
+	public static final int VK_CAPS_LOCK = 20;
+	public static final int VK_CLEAR = 12;
+	public static final int VK_COMMA = 44;
+	public static final int VK_CONTROL = 17;
+	public static final int VK_BACK_SPACE = 8;
+	public static final int VK_EQUALS = 61;
+	public static final int VK_ESCAPE = 27;
+	public static final int VK_F1 = 112;
+	public static final int VK_PERIOD = 46;
+	public static final int VK_INSERT = 155;
+	public static final int VK_OPEN_BRACKET = 91;
+	public static final int VK_WINDOWS = 524;
+	public static final int VK_MINUS = 45;
+	public static final int VK_END = 35;
+	public static final int VK_HOME = 36;
+	public static final int VK_NUM_LOCK = 144;
+	public static final int VK_PAGE_UP = 33;
+	public static final int VK_PAGE_DOWN = 34;
+	public static final int VK_PLUS = 521;
+	public static final int VK_CLOSE_BRACKET = 93;
+	public static final int VK_SCROLL_LOCK = 145;
+	public static final int VK_SEMICOLON = 59;
+	public static final int VK_SHIFT = 16;
+	public static final int VK_SLASH = 47;
+	public static final int VK_SPACE = 32;
+	public static final int VK_PRINTSCREEN = 154;
+	public static final int VK_TAB = 9;
+	public static final int VK_LEFT = 37;
+	public static final int VK_RIGHT = 39;
+	public static final int VK_UP = 38;
+	public static final int VK_DOWN = 40;
+	public static final int VK_BACK_QUOTE = 192;
+	public static final int VK_QUOTE = 222;
+	public static final int VK_PAUSE = 19;
+	
+	/**
+	 * Constructs a new translator for the specified connection
+	 * @param conn the connection to which the translated codes are sent
+	 */
+	public KeyboardTranslator(NvConnection conn) {
+		super(conn);
+	}
+	
+	/**
+	 * Translates the given keycode and returns the GFE keycode
+	 * @param keycode the code to be translated
+	 * @return a GFE keycode for the given keycode
+	 */
+	@Override
+	public short translate(int keycode) {
+		int translated;
+		
+		/* There seems to be no clean mapping between Android key codes
+		 * and what Nvidia sends over the wire. If someone finds one,
+		 * I'll happily delete this code :)
+		 */
+		if (keycode >= KeyEvent.KEYCODE_0 &&
+			keycode <= KeyEvent.KEYCODE_9) {
+			translated = (keycode - KeyEvent.KEYCODE_0) + VK_0;
+		}
+		else if (keycode >= KeyEvent.KEYCODE_A &&
+				 keycode <= KeyEvent.KEYCODE_Z) {
+			translated = (keycode - KeyEvent.KEYCODE_A) + VK_A;
+		}
+		else if (keycode >= KeyEvent.KEYCODE_NUMPAD_0 &&
+				 keycode <= KeyEvent.KEYCODE_NUMPAD_9) {
+			translated = (keycode - KeyEvent.KEYCODE_NUMPAD_0) + VK_NUMPAD0;
+		}
+		else if (keycode >= KeyEvent.KEYCODE_F1 &&
+				 keycode <= KeyEvent.KEYCODE_F12) {
+			translated = (keycode - KeyEvent.KEYCODE_F1) + VK_F1;
+		}
+		else {
+			switch (keycode) {
+			case KeyEvent.KEYCODE_ALT_LEFT:
+			case KeyEvent.KEYCODE_ALT_RIGHT:
+				translated = VK_ALT;
+				break;
+				
+			case KeyEvent.KEYCODE_BACKSLASH:
+				translated = 0xdc;
+				break;
+				
+			case KeyEvent.KEYCODE_CAPS_LOCK:
+				translated = VK_CAPS_LOCK;
+				break;
+				
+			case KeyEvent.KEYCODE_CLEAR:
+				translated = VK_CLEAR;
+				break;
+				
+			case KeyEvent.KEYCODE_COMMA:
+				translated = 0xbc;
+				break;
+				
+			case KeyEvent.KEYCODE_CTRL_LEFT:
+			case KeyEvent.KEYCODE_CTRL_RIGHT:
+				translated = VK_CONTROL;
+				break;
+				
+			case KeyEvent.KEYCODE_DEL:
+				translated = VK_BACK_SPACE;
+				break;
+				
+			case KeyEvent.KEYCODE_ENTER:
+				translated = 0x0d;
+				break;
+				
+			case KeyEvent.KEYCODE_EQUALS:
+				translated = 0xbb;
+				break;
+				
+			case KeyEvent.KEYCODE_ESCAPE:
+				translated = VK_ESCAPE;
+				break;
+				
+			case KeyEvent.KEYCODE_FORWARD_DEL:
+				// Nvidia maps period to delete
+				translated = VK_PERIOD;
+				break;
+				
+			case KeyEvent.KEYCODE_INSERT:
+				translated = -1;
+				break;
+				
+			case KeyEvent.KEYCODE_LEFT_BRACKET:
+				translated = 0xdb;
+				break;
+				
+			case KeyEvent.KEYCODE_META_LEFT:
+			case KeyEvent.KEYCODE_META_RIGHT:
+				translated = VK_WINDOWS;
+				break;
+				
+			case KeyEvent.KEYCODE_MINUS:
+				translated = 0xbd;
+				break;
+				
+			case KeyEvent.KEYCODE_MOVE_END:
+				translated = VK_END;
+				break;
+				
+			case KeyEvent.KEYCODE_MOVE_HOME:
+				translated = VK_HOME;
+				break;
+				
+			case KeyEvent.KEYCODE_NUM_LOCK:
+				translated = VK_NUM_LOCK;
+				break;
+				
+			case KeyEvent.KEYCODE_PAGE_DOWN:
+				translated = VK_PAGE_DOWN;
+				break;
+				
+			case KeyEvent.KEYCODE_PAGE_UP:
+				translated = VK_PAGE_UP;
+				break;
+				
+			case KeyEvent.KEYCODE_PERIOD:
+				translated = 0xbe;
+				break;
+				
+			case KeyEvent.KEYCODE_RIGHT_BRACKET:
+				translated = 0xdd;
+				break;
+				
+			case KeyEvent.KEYCODE_SCROLL_LOCK:
+				translated = VK_SCROLL_LOCK;
+				break;
+				
+			case KeyEvent.KEYCODE_SEMICOLON:
+				translated = 0xba;
+				break;
+				
+			case KeyEvent.KEYCODE_SHIFT_LEFT:
+			case KeyEvent.KEYCODE_SHIFT_RIGHT:
+				translated = VK_SHIFT;
+				break;
+				
+			case KeyEvent.KEYCODE_SLASH:
+				translated = 0xbf;
+				break;
+				
+			case KeyEvent.KEYCODE_SPACE:
+				translated = VK_SPACE;
+				break;
+				
+			case KeyEvent.KEYCODE_SYSRQ:
+				// Android defines this as SysRq/PrntScrn
+				translated = VK_PRINTSCREEN;
+				break;
+				
+			case KeyEvent.KEYCODE_TAB:
+				translated = VK_TAB;
+				break;
+				
+			case KeyEvent.KEYCODE_DPAD_LEFT:
+				translated = VK_LEFT;
+				break;
+				
+			case KeyEvent.KEYCODE_DPAD_RIGHT:
+				translated = VK_RIGHT;
+				break;
+				
+			case KeyEvent.KEYCODE_DPAD_UP:
+				translated = VK_UP;
+				break;
+				
+			case KeyEvent.KEYCODE_DPAD_DOWN:
+				translated = VK_DOWN;
+				break;
+				
+			case KeyEvent.KEYCODE_GRAVE:
+				translated = VK_BACK_QUOTE;
+				break;
+				
+			case KeyEvent.KEYCODE_APOSTROPHE:
+				translated = 0xde;
+				break;
+				
+			case KeyEvent.KEYCODE_BREAK:
+				translated = VK_PAUSE;
+				break;
+				
+			default:
+				System.out.println("No key for "+keycode);
+				return 0;
+			}
+		}
+		
+		return (short) ((KEY_PREFIX << 8) | translated);
+	}
+
+}

app/src/main/java/com/limelight/binding/input/TouchContext.java

@@ -0,0 +1,93 @@
+package com.limelight.binding.input;
+
+import com.limelight.nvstream.NvConnection;
+import com.limelight.nvstream.input.MouseButtonPacket;
+
+public class TouchContext {
+	private int lastTouchX = 0;
+	private int lastTouchY = 0;
+	private int originalTouchX = 0;
+	private int originalTouchY = 0;
+	private long originalTouchTime = 0;
+	
+	private NvConnection conn;
+	private int actionIndex;
+	
+	private static final int TAP_MOVEMENT_THRESHOLD = 10;
+	private static final int TAP_TIME_THRESHOLD = 250;
+	
+	public TouchContext(NvConnection conn, int actionIndex)
+	{
+		this.conn = conn;
+		this.actionIndex = actionIndex;
+	}
+	
+	private boolean isTap()
+	{
+		int xDelta = Math.abs(lastTouchX - originalTouchX);
+		int yDelta = Math.abs(lastTouchY - originalTouchY);
+		long timeDelta = System.currentTimeMillis() - originalTouchTime;
+		
+		return xDelta <= TAP_MOVEMENT_THRESHOLD &&
+				yDelta <= TAP_MOVEMENT_THRESHOLD &&
+				timeDelta <= TAP_TIME_THRESHOLD;
+	}
+	
+	private byte getMouseButtonIndex()
+	{
+		if (actionIndex == 1) {
+			return MouseButtonPacket.BUTTON_RIGHT;
+		}
+		else {
+			return MouseButtonPacket.BUTTON_LEFT;
+		}
+	}
+	
+	public boolean touchDownEvent(int eventX, int eventY)
+	{
+		originalTouchX = lastTouchX = eventX;
+		originalTouchY = lastTouchY = eventY;
+		originalTouchTime = System.currentTimeMillis();
+		
+		return true;
+	}
+	
+	public void touchUpEvent(int eventX, int eventY)
+	{
+		if (isTap())
+		{
+			byte buttonIndex = getMouseButtonIndex();
+			
+			// Lower the mouse button
+			conn.sendMouseButtonDown(buttonIndex);
+			
+			// We need to sleep a bit here because some games
+			// do input detection by polling
+			try {
+				Thread.sleep(100);
+			} catch (InterruptedException e) {}
+			
+			// Raise the mouse button
+			conn.sendMouseButtonUp(buttonIndex);
+		}
+	}
+	
+	public boolean touchMoveEvent(int eventX, int eventY)
+	{	
+		if (eventX != lastTouchX || eventY != lastTouchY)
+		{
+			// We only send moves for the primary touch point
+			if (actionIndex == 0) {
+				conn.sendMouseMove((short)(eventX - lastTouchX),
+						(short)(eventY - lastTouchY));
+			}
+			
+			lastTouchX = eventX;
+			lastTouchY = eventY;
+			
+			return true;
+		}
+		
+		return false;
+	}
+}

app/src/main/java/com/limelight/binding/input/evdev/EvdevEvent.java

@@ -0,0 +1,41 @@
+package com.limelight.binding.input.evdev;
+
+public class EvdevEvent {
+	public static final int EVDEV_MIN_EVENT_SIZE = 16;
+	public static final int EVDEV_MAX_EVENT_SIZE = 24;
+	
+	/* Event types */
+	public static final short EV_SYN = 0x00;
+	public static final short EV_KEY = 0x01;
+	public static final short EV_REL = 0x02;
+	public static final short EV_MSC = 0x04;
+	
+	/* Relative axes */
+	public static final short REL_X = 0x00;
+	public static final short REL_Y = 0x01;
+	public static final short REL_WHEEL = 0x08;
+	
+	/* Buttons */
+	public static final short BTN_LEFT = 0x110;
+	public static final short BTN_RIGHT = 0x111;
+	public static final short BTN_MIDDLE = 0x112;
+	public static final short BTN_SIDE = 0x113;
+	public static final short BTN_EXTRA = 0x114;
+	public static final short BTN_FORWARD = 0x115;
+	public static final short BTN_BACK = 0x116;
+	public static final short BTN_TASK = 0x117;
+	public static final short BTN_GAMEPAD = 0x130;
+	
+	/* Keys */
+	public static final short KEY_Q = 16;
+	
+	public short type;
+	public short code;
+	public int value;
+	
+	public EvdevEvent(short type, short code, int value) {
+		this.type = type;
+		this.code = code;
+		this.value = value;
+	}
+}

app/src/main/java/com/limelight/binding/input/evdev/EvdevHandler.java

@@ -0,0 +1,167 @@
+package com.limelight.binding.input.evdev;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+
+import com.limelight.LimeLog;
+
+public class EvdevHandler {
+
+	private String absolutePath;
+	private EvdevListener listener;
+	private boolean shutdown = false;
+	private int fd = -1;
+	
+	private Thread handlerThread = new Thread() {
+		@Override
+		public void run() {
+			// All the finally blocks here make this code look like a mess
+			// but it's important that we get this right to avoid causing
+			// system-wide input problems.
+			
+			// Open the /dev/input/eventX file
+			fd = EvdevReader.open(absolutePath);
+			if (fd == -1) {
+				LimeLog.warning("Unable to open "+absolutePath);
+				return;
+			}
+
+			try {
+				// Check if it's a mouse or keyboard, but not a gamepad
+				if ((!EvdevReader.isMouse(fd) && !EvdevReader.isAlphaKeyboard(fd)) ||
+					EvdevReader.isGamepad(fd)) {
+					// We only handle keyboards and mice
+					return;
+				}
+
+				// Grab it for ourselves
+				if (!EvdevReader.grab(fd)) {
+					LimeLog.warning("Unable to grab "+absolutePath);
+					return;
+				}
+
+				LimeLog.info("Grabbed device for raw keyboard/mouse input: "+absolutePath);
+
+				ByteBuffer buffer = ByteBuffer.allocate(EvdevEvent.EVDEV_MAX_EVENT_SIZE).order(ByteOrder.nativeOrder());
+
+				try {
+					int deltaX = 0;
+					int deltaY = 0;
+					byte deltaScroll = 0;
+
+					while (!isInterrupted() && !shutdown) {
+						EvdevEvent event = EvdevReader.read(fd, buffer);
+						if (event == null) {
+							return;
+						}
+
+						switch (event.type)
+						{
+						case EvdevEvent.EV_SYN:
+							if (deltaX != 0 || deltaY != 0) {
+								listener.mouseMove(deltaX, deltaY);
+								deltaX = deltaY = 0;
+							}
+							if (deltaScroll != 0) {
+								listener.mouseScroll(deltaScroll);
+								deltaScroll = 0;
+							}
+							break;
+
+						case EvdevEvent.EV_REL:
+							switch (event.code)
+							{
+							case EvdevEvent.REL_X:
+								deltaX = event.value;
+								break;
+							case EvdevEvent.REL_Y:
+								deltaY = event.value;
+								break;
+							case EvdevEvent.REL_WHEEL:
+								deltaScroll = (byte) event.value;
+								break;
+							}
+							break;
+
+						case EvdevEvent.EV_KEY:
+							switch (event.code)
+							{
+							case EvdevEvent.BTN_LEFT:
+								listener.mouseButtonEvent(EvdevListener.BUTTON_LEFT,
+										event.value != 0);
+								break;
+							case EvdevEvent.BTN_MIDDLE:
+								listener.mouseButtonEvent(EvdevListener.BUTTON_MIDDLE,
+										event.value != 0);
+								break;
+							case EvdevEvent.BTN_RIGHT:
+								listener.mouseButtonEvent(EvdevListener.BUTTON_RIGHT,
+										event.value != 0);
+								break;
+								
+							case EvdevEvent.BTN_SIDE:
+							case EvdevEvent.BTN_EXTRA:
+							case EvdevEvent.BTN_FORWARD:
+							case EvdevEvent.BTN_BACK:
+							case EvdevEvent.BTN_TASK:
+								// Other unhandled mouse buttons
+								break;
+								
+							default:
+								// We got some unrecognized button. This means
+								// someone is trying to use the other device in this
+								// "combination" input device. We'll try to handle
+								// it via keyboard, but we're not going to disconnect
+								// if we can't
+								short keyCode = EvdevTranslator.translateEvdevKeyCode(event.code);
+								if (keyCode != 0) {
+									listener.keyboardEvent(event.value != 0, keyCode);
+								}
+								break;
+							}
+							break;
+							
+						case EvdevEvent.EV_MSC:
+							break;
+						}
+					}
+				} finally {
+					// Release our grab
+					EvdevReader.ungrab(fd);
+				}
+			} finally {
+				// Close the file
+				EvdevReader.close(fd);
+			}
+		}
+	};
+	
+	public EvdevHandler(String absolutePath, EvdevListener listener) {
+		this.absolutePath = absolutePath;
+		this.listener = listener;
+	}
+	
+	public void start() {
+		handlerThread.start();
+	}
+	
+	public void stop() {
+		// Close the fd. It doesn't matter if this races
+		// with the handler thread. We'll close this out from
+		// under the thread to wake it up
+		if (fd != -1) {
+			EvdevReader.close(fd);
+		}
+		
+		shutdown = true;
+		handlerThread.interrupt();
+		
+		try {
+			handlerThread.join();
+		} catch (InterruptedException e) {}
+	}
+	
+	public void notifyDeleted() {
+		stop();
+	}
+}

app/src/main/java/com/limelight/binding/input/evdev/EvdevListener.java

@@ -0,0 +1,12 @@
+package com.limelight.binding.input.evdev;
+
+public interface EvdevListener {
+	public static final int BUTTON_LEFT = 1;
+	public static final int BUTTON_MIDDLE = 2;
+	public static final int BUTTON_RIGHT = 3;
+	
+	public void mouseMove(int deltaX, int deltaY);
+	public void mouseButtonEvent(int buttonId, boolean down);
+	public void mouseScroll(byte amount);
+	public void keyboardEvent(boolean buttonDown, short keyCode);
+}

app/src/main/java/com/limelight/binding/input/evdev/EvdevReader.java

@@ -0,0 +1,102 @@
+package com.limelight.binding.input.evdev;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.nio.ByteBuffer;
+import java.util.Locale;
+
+import com.limelight.LimeLog;
+
+public class EvdevReader {
+	static {
+		System.loadLibrary("evdev_reader");
+	}
+	
+	// Requires root to chmod /dev/input/eventX
+	public static boolean setPermissions(String[] files, int octalPermissions) {		
+		ProcessBuilder builder = new ProcessBuilder("su");
+		
+		try {
+			Process p = builder.start();
+			
+			OutputStream stdin = p.getOutputStream();
+			for (String file : files) {
+				stdin.write(String.format((Locale)null, "chmod %o %s\n", octalPermissions, file).getBytes("UTF-8"));
+			}
+			stdin.write("exit\n".getBytes("UTF-8"));
+			stdin.flush();
+			
+			p.waitFor();
+			p.destroy();
+		} catch (IOException e) {
+			e.printStackTrace();
+		} catch (InterruptedException e) {
+			e.printStackTrace();
+		}
+		
+		return false;
+	}
+	
+	// Returns the fd to be passed to other function or -1 on error
+	public static native int open(String fileName);
+	
+	// Prevent other apps (including Android itself) from using the device while "grabbed"
+	public static native boolean grab(int fd);
+	public static native boolean ungrab(int fd);
+	
+	// Used for checking device capabilities
+	public static native boolean hasRelAxis(int fd, short axis);
+	public static native boolean hasAbsAxis(int fd, short axis);
+	public static native boolean hasKey(int fd, short key);
+	
+	public static boolean isMouse(int fd) {
+		// This is the same check that Android does in EventHub.cpp
+		return hasRelAxis(fd, EvdevEvent.REL_X) &&
+				hasRelAxis(fd, EvdevEvent.REL_Y) &&
+				hasKey(fd, EvdevEvent.BTN_LEFT);
+	}
+	
+	public static boolean isAlphaKeyboard(int fd) {
+		// This is the same check that Android does in EventHub.cpp
+		return hasKey(fd, EvdevEvent.KEY_Q);
+	}
+	
+	public static boolean isGamepad(int fd) {
+		return hasKey(fd, EvdevEvent.BTN_GAMEPAD);
+	}
+	
+	// Returns the bytes read or -1 on error
+	private static native int read(int fd, byte[] buffer);
+	
+	// Takes a byte buffer to use to read the output into.
+	// This buffer MUST be in native byte order and at least
+	// EVDEV_MAX_EVENT_SIZE bytes long.
+	public static EvdevEvent read(int fd, ByteBuffer buffer) {
+		int bytesRead = read(fd, buffer.array());
+		if (bytesRead < 0) {
+			LimeLog.warning("Failed to read: "+bytesRead);
+			return null;
+		}
+		else if (bytesRead < EvdevEvent.EVDEV_MIN_EVENT_SIZE) {
+			LimeLog.warning("Short read: "+bytesRead);
+			return null;
+		}
+		
+		buffer.limit(bytesRead);
+		buffer.rewind();
+		
+		// Throw away the time stamp
+		if (bytesRead == EvdevEvent.EVDEV_MAX_EVENT_SIZE) {
+			buffer.getLong();
+			buffer.getLong();
+		} else {
+			buffer.getInt();
+			buffer.getInt();
+		}
+		
+		return new EvdevEvent(buffer.getShort(), buffer.getShort(), buffer.getInt());
+	}
+	
+	// Closes the fd from open()
+	public static native int close(int fd);
+}

app/src/main/java/com/limelight/binding/input/evdev/EvdevTranslator.java

@@ -0,0 +1,139 @@
+package com.limelight.binding.input.evdev;
+
+import android.view.KeyEvent;
+
+public class EvdevTranslator {
+
+	public static final short EVDEV_KEY_CODES[] = {
+		0, //KeyEvent.VK_RESERVED
+		KeyEvent.KEYCODE_ESCAPE,
+		KeyEvent.KEYCODE_1,
+		KeyEvent.KEYCODE_2,
+		KeyEvent.KEYCODE_3,
+		KeyEvent.KEYCODE_4,
+		KeyEvent.KEYCODE_5,
+		KeyEvent.KEYCODE_6,
+		KeyEvent.KEYCODE_7,
+		KeyEvent.KEYCODE_8,
+		KeyEvent.KEYCODE_9,
+		KeyEvent.KEYCODE_0,
+		KeyEvent.KEYCODE_MINUS,
+		KeyEvent.KEYCODE_EQUALS,
+		KeyEvent.KEYCODE_DEL,
+		KeyEvent.KEYCODE_TAB,
+		KeyEvent.KEYCODE_Q,
+		KeyEvent.KEYCODE_W,
+		KeyEvent.KEYCODE_E,
+		KeyEvent.KEYCODE_R,
+		KeyEvent.KEYCODE_T,
+		KeyEvent.KEYCODE_Y,
+		KeyEvent.KEYCODE_U,
+		KeyEvent.KEYCODE_I,
+		KeyEvent.KEYCODE_O,
+		KeyEvent.KEYCODE_P,
+		KeyEvent.KEYCODE_LEFT_BRACKET,
+		KeyEvent.KEYCODE_RIGHT_BRACKET,
+		KeyEvent.KEYCODE_ENTER,
+		KeyEvent.KEYCODE_CTRL_LEFT,
+		KeyEvent.KEYCODE_A,
+		KeyEvent.KEYCODE_S,
+		KeyEvent.KEYCODE_D,
+		KeyEvent.KEYCODE_F,
+		KeyEvent.KEYCODE_G,
+		KeyEvent.KEYCODE_H,
+		KeyEvent.KEYCODE_J,
+		KeyEvent.KEYCODE_K,
+		KeyEvent.KEYCODE_L,
+		KeyEvent.KEYCODE_SEMICOLON,
+		KeyEvent.KEYCODE_APOSTROPHE,
+		KeyEvent.KEYCODE_GRAVE,
+		KeyEvent.KEYCODE_SHIFT_LEFT,
+		KeyEvent.KEYCODE_BACKSLASH,
+		KeyEvent.KEYCODE_Z,
+		KeyEvent.KEYCODE_X,
+		KeyEvent.KEYCODE_C,
+		KeyEvent.KEYCODE_V,
+		KeyEvent.KEYCODE_B,
+		KeyEvent.KEYCODE_N,
+		KeyEvent.KEYCODE_M,
+		KeyEvent.KEYCODE_COMMA,
+		KeyEvent.KEYCODE_PERIOD,
+		KeyEvent.KEYCODE_SLASH,
+		KeyEvent.KEYCODE_SHIFT_RIGHT,
+		KeyEvent.KEYCODE_NUMPAD_MULTIPLY,
+		KeyEvent.KEYCODE_ALT_LEFT,
+		KeyEvent.KEYCODE_SPACE,
+		KeyEvent.KEYCODE_CAPS_LOCK,
+		KeyEvent.KEYCODE_F1,
+		KeyEvent.KEYCODE_F2,
+		KeyEvent.KEYCODE_F3,
+		KeyEvent.KEYCODE_F4,
+		KeyEvent.KEYCODE_F5,
+		KeyEvent.KEYCODE_F6,
+		KeyEvent.KEYCODE_F7,
+		KeyEvent.KEYCODE_F8,
+		KeyEvent.KEYCODE_F9,
+		KeyEvent.KEYCODE_F10,
+		KeyEvent.KEYCODE_NUM_LOCK,
+		KeyEvent.KEYCODE_SCROLL_LOCK,
+		KeyEvent.KEYCODE_NUMPAD_7,
+		KeyEvent.KEYCODE_NUMPAD_8,
+		KeyEvent.KEYCODE_NUMPAD_9,
+		KeyEvent.KEYCODE_NUMPAD_SUBTRACT,
+		KeyEvent.KEYCODE_NUMPAD_4,
+		KeyEvent.KEYCODE_NUMPAD_5,
+		KeyEvent.KEYCODE_NUMPAD_6,
+		KeyEvent.KEYCODE_NUMPAD_ADD,
+		KeyEvent.KEYCODE_NUMPAD_1,
+		KeyEvent.KEYCODE_NUMPAD_2,
+		KeyEvent.KEYCODE_NUMPAD_3,
+		KeyEvent.KEYCODE_NUMPAD_0,
+		KeyEvent.KEYCODE_NUMPAD_DOT,
+		0,
+		0, //KeyEvent.VK_ZENKAKUHANKAKU,
+		0, //KeyEvent.VK_102ND,
+		KeyEvent.KEYCODE_F11,
+		KeyEvent.KEYCODE_F12,
+		0, //KeyEvent.VK_RO,
+		0, //KeyEvent.VK_KATAKANA,
+		0, //KeyEvent.VK_HIRAGANA,
+		0, //KeyEvent.VK_HENKAN,
+		0, //KeyEvent.VK_KATAKANAHIRAGANA,
+		0, //KeyEvent.VK_MUHENKAN,
+		0, //KeyEvent.VK_KPJPCOMMA,
+		KeyEvent.KEYCODE_NUMPAD_ENTER,
+		KeyEvent.KEYCODE_CTRL_RIGHT,
+		KeyEvent.KEYCODE_NUMPAD_DIVIDE,
+		KeyEvent.KEYCODE_SYSRQ,
+		KeyEvent.KEYCODE_ALT_RIGHT,
+		0, //KeyEvent.VK_LINEFEED,
+		KeyEvent.KEYCODE_HOME,
+		KeyEvent.KEYCODE_DPAD_UP,
+		KeyEvent.KEYCODE_PAGE_UP,
+		KeyEvent.KEYCODE_DPAD_LEFT,
+		KeyEvent.KEYCODE_DPAD_RIGHT,
+		KeyEvent.KEYCODE_MOVE_END,
+		KeyEvent.KEYCODE_DPAD_DOWN,
+		KeyEvent.KEYCODE_PAGE_DOWN,
+		KeyEvent.KEYCODE_INSERT,
+		KeyEvent.KEYCODE_FORWARD_DEL,
+		0, //KeyEvent.VK_MACRO,
+		0, //KeyEvent.VK_MUTE,
+		0, //KeyEvent.VK_VOLUMEDOWN,
+		0, //KeyEvent.VK_VOLUMEUP,
+		0, //KeyEvent.VK_POWER, /* SC System Power Down */
+		KeyEvent.KEYCODE_NUMPAD_EQUALS,
+		0, //KeyEvent.VK_KPPLUSMINUS,
+		KeyEvent.KEYCODE_BREAK,
+		0, //KeyEvent.VK_SCALE, /* AL Compiz Scale (Expose) */
+	};
+	
+	public static short translateEvdevKeyCode(short evdevKeyCode) {
+		if (evdevKeyCode < EVDEV_KEY_CODES.length) {
+			return EVDEV_KEY_CODES[evdevKeyCode];
+		}
+		
+		return 0;
+	}
+
+}

app/src/main/java/com/limelight/binding/input/evdev/EvdevWatcher.java

@@ -0,0 +1,171 @@
+package com.limelight.binding.input.evdev;
+
+import java.io.File;
+import java.util.HashMap;
+import java.util.Map;
+
+import com.limelight.LimeLog;
+
+import android.os.FileObserver;
+
+public class EvdevWatcher {
+	private static final String PATH = "/dev/input";
+	private static final String REQUIRED_FILE_PREFIX = "event";
+	
+	private HashMap<String, EvdevHandler> handlers = new HashMap<String, EvdevHandler>();
+	private boolean shutdown = false;
+	private boolean init = false;
+	private boolean ungrabbed = false;
+	private EvdevListener listener;
+	private Thread startThread;
+	
+	private FileObserver observer = new FileObserver(PATH, FileObserver.CREATE | FileObserver.DELETE) {
+		@Override
+		public void onEvent(int event, String fileName) {
+			if (fileName == null) {
+				return;
+			}
+			
+			if (!fileName.startsWith(REQUIRED_FILE_PREFIX)) {
+				return;
+			}
+			
+			synchronized (handlers) {
+				if (shutdown) {
+					return;
+				}
+				
+				if ((event & FileObserver.CREATE) != 0) {
+					LimeLog.info("Starting evdev handler for "+fileName);
+					
+					if (!init) {
+						// If this a real new device, update permissions again so we can read it
+						EvdevReader.setPermissions(new String[]{PATH + "/" + fileName}, 0666);
+					}
+					
+					EvdevHandler handler = new EvdevHandler(PATH + "/" + fileName, listener);
+					
+					// If we're ungrabbed now, don't start the handler
+					if (!ungrabbed) {
+						handler.start();
+					}
+					
+					handlers.put(fileName, handler);
+				}
+				
+				if ((event & FileObserver.DELETE) != 0) {
+					LimeLog.info("Halting evdev handler for "+fileName);
+					
+					EvdevHandler handler = handlers.remove(fileName);
+					if (handler != null) {
+						handler.notifyDeleted();
+					}
+				}
+			}
+		}
+	};
+	
+	public EvdevWatcher(EvdevListener listener) {
+		this.listener = listener;
+	}
+	
+	private File[] rundownWithPermissionsChange(int newPermissions) {
+		// Rundown existing files
+		File devInputDir = new File(PATH);
+		File[] files = devInputDir.listFiles();
+		if (files == null) {
+			return new File[0];
+		}
+		
+		// Set desired permissions
+		String[] filePaths = new String[files.length];
+		for (int i = 0; i < files.length; i++) {
+			filePaths[i] = files[i].getAbsolutePath();
+		}
+		EvdevReader.setPermissions(filePaths, newPermissions);
+		
+		return files;
+	}
+	
+	public void ungrabAll() {
+		synchronized (handlers) {
+			// Note that we're ungrabbed for now
+			ungrabbed = true;
+			
+			// Stop all handlers
+			for (EvdevHandler handler : handlers.values()) {
+				handler.stop();
+			}
+		}
+	}
+	
+	public void regrabAll() {
+		synchronized (handlers) {
+			// We're regrabbing everything now
+			ungrabbed = false;
+			
+			for (Map.Entry<String, EvdevHandler> entry : handlers.entrySet()) {
+				// We need to recreate each entry since we can't reuse a stopped one
+				entry.setValue(new EvdevHandler(PATH + "/" + entry.getKey(), listener));
+				entry.getValue().start();
+			}
+		}
+	}
+	
+	public void start() {
+		startThread = new Thread() {
+			@Override
+			public void run() {
+				// List all files and allow us access
+				File[] files = rundownWithPermissionsChange(0666);
+				
+				init = true;
+				for (File f : files) {
+					observer.onEvent(FileObserver.CREATE, f.getName());
+				}
+				
+				// Done with initial onEvent calls
+				init = false;
+				
+				// Start watching for new files
+				observer.startWatching();
+				
+				synchronized (startThread) {
+					// Wait to be awoken again by shutdown()
+					try {
+						startThread.wait();
+					} catch (InterruptedException e) {}
+				}
+				
+				// Giveup eventX permissions
+				rundownWithPermissionsChange(066);
+			}
+		};
+		startThread.start();
+	}
+	
+	public void shutdown() {
+		// Let start thread cleanup on it's own sweet time
+		synchronized (startThread) {
+			startThread.notify();
+		}
+		
+		// Stop the observer
+		observer.stopWatching();
+		
+		synchronized (handlers) {			
+			// Stop creating new handlers
+			shutdown = true;
+			
+			// If we've already ungrabbed, there's nothing else to do
+			if (ungrabbed) {
+				return;
+			}
+			
+			// Stop all handlers
+			for (EvdevHandler handler : handlers.values()) {
+				handler.stop();
+			}
+		}
+	}
+}

app/src/main/java/com/limelight/binding/video/AndroidCpuDecoderRenderer.java

@@ -0,0 +1,262 @@
+package com.limelight.binding.video;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.util.concurrent.locks.LockSupport;
+
+import android.graphics.PixelFormat;
+import android.os.Build;
+import android.view.SurfaceHolder;
+
+import com.limelight.LimeLog;
+import com.limelight.nvstream.av.ByteBufferDescriptor;
+import com.limelight.nvstream.av.DecodeUnit;
+import com.limelight.nvstream.av.video.VideoDecoderRenderer;
+import com.limelight.nvstream.av.video.VideoDepacketizer;
+import com.limelight.nvstream.av.video.cpu.AvcDecoder;
+
+public class AndroidCpuDecoderRenderer implements VideoDecoderRenderer {
+
+	private Thread rendererThread;
+	private int targetFps;
+	
+	private static final int DECODER_BUFFER_SIZE = 92*1024;
+	private ByteBuffer decoderBuffer;
+	
+	// Only sleep if the difference is above this value
+	private static final int WAIT_CEILING_MS = 8;
+	
+	private static final int LOW_PERF = 1;
+	private static final int MED_PERF = 2;
+	private static final int HIGH_PERF = 3;
+	
+	private int totalFrames;
+	private long totalTimeMs;
+	
+	private int cpuCount = Runtime.getRuntime().availableProcessors();
+	
+	@SuppressWarnings("unused")
+	private int findOptimalPerformanceLevel() {
+		StringBuilder cpuInfo = new StringBuilder();
+		BufferedReader br = null;
+		try {
+			br = new BufferedReader(new FileReader(new File("/proc/cpuinfo")));
+			for (;;) {
+				int ch = br.read();
+				if (ch == -1)
+					break;
+				cpuInfo.append((char)ch);
+			}
+			
+			// Here we're doing very simple heuristics based on CPU model
+			String cpuInfoStr = cpuInfo.toString();
+
+			// We order them from greatest to least for proper detection
+			// of devices with multiple sets of cores (like Exynos 5 Octa)
+			// TODO Make this better (only even kind of works on ARM)
+			if (Build.FINGERPRINT.contains("generic")) {
+				// Emulator
+				return LOW_PERF;
+			}
+			else if (cpuInfoStr.contains("0xc0f")) {
+				// Cortex-A15
+				return MED_PERF;
+			}
+			else if (cpuInfoStr.contains("0xc09")) {
+				// Cortex-A9
+				return LOW_PERF;
+			}
+			else if (cpuInfoStr.contains("0xc07")) {
+				// Cortex-A7
+				return LOW_PERF;
+			}
+			else {
+				// Didn't have anything we're looking for
+				return MED_PERF;
+			}
+		} catch (IOException e) {
+		} finally {
+			if (br != null) {
+				try {
+					br.close();
+				} catch (IOException e) {}
+			}
+		}
+		
+		// Couldn't read cpuinfo, so assume medium
+		return MED_PERF;
+	}
+	
+	@Override
+	public boolean setup(int width, int height, int redrawRate, Object renderTarget, int drFlags) {
+		this.targetFps = redrawRate;
+		
+		int perfLevel = LOW_PERF; //findOptimalPerformanceLevel();
+		int threadCount;
+		
+		int avcFlags = 0;
+		switch (perfLevel) {
+		case HIGH_PERF:
+			// Single threaded low latency decode is ideal but hard to acheive
+			avcFlags = AvcDecoder.LOW_LATENCY_DECODE;
+			threadCount = 1;
+			break;
+
+		case LOW_PERF:
+			// Disable the loop filter for performance reasons
+			avcFlags = AvcDecoder.DISABLE_LOOP_FILTER |
+				AvcDecoder.FAST_BILINEAR_FILTERING |
+				AvcDecoder.FAST_DECODE;
+			
+			// Use plenty of threads to try to utilize the CPU as best we can
+			threadCount = cpuCount - 1;
+			break;
+
+		default:
+		case MED_PERF:
+			avcFlags = AvcDecoder.BILINEAR_FILTERING |
+				AvcDecoder.FAST_DECODE;
+			
+			// Only use 2 threads to minimize frame processing latency
+			threadCount = 2;
+			break;
+		}
+		
+		// If the user wants quality, we'll remove the low IQ flags
+		if ((drFlags & VideoDecoderRenderer.FLAG_PREFER_QUALITY) != 0) {
+			// Make sure the loop filter is enabled
+			avcFlags &= ~AvcDecoder.DISABLE_LOOP_FILTER;
+			
+			// Disable the non-compliant speed optimizations
+			avcFlags &= ~AvcDecoder.FAST_DECODE;
+			
+			LimeLog.info("Using high quality decoding");
+		}
+		
+		SurfaceHolder sh = (SurfaceHolder)renderTarget;
+		sh.setFormat(PixelFormat.RGBX_8888);
+		
+		int err = AvcDecoder.init(width, height, avcFlags, threadCount);
+		if (err != 0) {
+			throw new IllegalStateException("AVC decoder initialization failure: "+err);
+		}
+		
+		AvcDecoder.setRenderTarget(sh.getSurface());
+		
+		decoderBuffer = ByteBuffer.allocate(DECODER_BUFFER_SIZE + AvcDecoder.getInputPaddingSize());
+		
+		LimeLog.info("Using software decoding (performance level: "+perfLevel+")");
+		
+		return true;
+	}
+
+	@Override
+	public boolean start(final VideoDepacketizer depacketizer) {
+		rendererThread = new Thread() {
+			@Override
+			public void run() {
+				long nextFrameTime = System.currentTimeMillis();
+				DecodeUnit du;
+				while (!isInterrupted())
+				{
+					du = depacketizer.pollNextDecodeUnit(); 
+					if (du != null) {
+						submitDecodeUnit(du);
+						depacketizer.freeDecodeUnit(du);
+					}
+					
+					long diff = nextFrameTime - System.currentTimeMillis();
+
+					if (diff > WAIT_CEILING_MS) {
+						LockSupport.parkNanos(1);
+						continue;
+					}
+
+					nextFrameTime = computePresentationTimeMs(targetFps);
+					AvcDecoder.redraw();
+				}
+			}
+		};
+		rendererThread.setName("Video - Renderer (CPU)");
+		rendererThread.setPriority(Thread.MAX_PRIORITY);
+		rendererThread.start();
+		return true;
+	}
+	
+	private long computePresentationTimeMs(int frameRate) {
+		return System.currentTimeMillis() + (1000 / frameRate);
+	}
+
+	@Override
+	public void stop() {
+		rendererThread.interrupt();
+		
+		try {
+			rendererThread.join();
+		} catch (InterruptedException e) { }
+	}
+
+	@Override
+	public void release() {
+		AvcDecoder.destroy();
+	}
+
+	private boolean submitDecodeUnit(DecodeUnit decodeUnit) {
+		byte[] data;
+		
+		// Use the reserved decoder buffer if this decode unit will fit
+		if (decodeUnit.getDataLength() <= DECODER_BUFFER_SIZE) {
+			decoderBuffer.clear();
+			
+			for (ByteBufferDescriptor bbd : decodeUnit.getBufferList()) {
+				decoderBuffer.put(bbd.data, bbd.offset, bbd.length);
+			}
+			
+			data = decoderBuffer.array();
+		}
+		else {
+			data = new byte[decodeUnit.getDataLength()+AvcDecoder.getInputPaddingSize()];
+			
+			int offset = 0;
+			for (ByteBufferDescriptor bbd : decodeUnit.getBufferList()) {
+				System.arraycopy(bbd.data, bbd.offset, data, offset, bbd.length);
+				offset += bbd.length;
+			}
+		}
+		
+		boolean success = (AvcDecoder.decode(data, 0, decodeUnit.getDataLength()) == 0);
+		if (success) {
+			long timeAfterDecode = System.currentTimeMillis();
+			
+		    // Add delta time to the totals (excluding probable outliers)
+		    long delta = timeAfterDecode - decodeUnit.getReceiveTimestamp();
+			if (delta >= 0 && delta < 300) {
+			    totalTimeMs += delta;
+			    totalFrames++;
+			}
+		}
+		
+		return success;
+	}
+
+	@Override
+	public int getCapabilities() {
+		return 0;
+	}
+
+	@Override
+	public int getAverageDecoderLatency() {
+		return 0;
+	}
+
+	@Override
+	public int getAverageEndToEndLatency() {
+		if (totalFrames == 0) {
+			return 0;
+		}
+		return (int)(totalTimeMs / totalFrames);
+	}
+}

app/src/main/java/com/limelight/binding/video/ConfigurableDecoderRenderer.java

@@ -0,0 +1,77 @@
+package com.limelight.binding.video;
+
+import com.limelight.nvstream.av.video.VideoDecoderRenderer;
+import com.limelight.nvstream.av.video.VideoDepacketizer;
+
+public class ConfigurableDecoderRenderer implements VideoDecoderRenderer {
+
+	private VideoDecoderRenderer decoderRenderer;
+	
+	@Override
+	public void release() {
+		if (decoderRenderer != null) {
+			decoderRenderer.release();
+		}
+	}
+
+	@Override
+	public boolean setup(int width, int height, int redrawRate, Object renderTarget, int drFlags) {
+		if (decoderRenderer == null) {
+			throw new IllegalStateException("ConfigurableDecoderRenderer not initialized");
+		}
+		return decoderRenderer.setup(width, height, redrawRate, renderTarget, drFlags);
+	}
+	
+	public void initializeWithFlags(int drFlags) {
+		if ((drFlags & VideoDecoderRenderer.FLAG_FORCE_HARDWARE_DECODING) != 0 ||
+				((drFlags & VideoDecoderRenderer.FLAG_FORCE_SOFTWARE_DECODING) == 0 &&
+				MediaCodecHelper.findProbableSafeDecoder() != null)) {
+			decoderRenderer = new MediaCodecDecoderRenderer();
+		}
+		else {
+			decoderRenderer = new AndroidCpuDecoderRenderer();
+		}
+	}
+	
+	public boolean isHardwareAccelerated() {
+		if (decoderRenderer == null) {
+			throw new IllegalStateException("ConfigurableDecoderRenderer not initialized");
+		}
+		return (decoderRenderer instanceof MediaCodecDecoderRenderer);
+	}
+
+	@Override
+	public boolean start(VideoDepacketizer depacketizer) {
+		return decoderRenderer.start(depacketizer);
+	}
+
+	@Override
+	public void stop() {
+		decoderRenderer.stop();
+	}
+
+	@Override
+	public int getCapabilities() {
+		return decoderRenderer.getCapabilities();
+	}
+
+	@Override
+	public int getAverageDecoderLatency() {
+		if (decoderRenderer != null) {
+			return decoderRenderer.getAverageDecoderLatency();
+		}
+		else {
+			return 0;
+		}
+	}
+
+	@Override
+	public int getAverageEndToEndLatency() {
+		if (decoderRenderer != null) {
+			return decoderRenderer.getAverageEndToEndLatency();
+		}
+		else {
+			return 0;
+		}
+	}
+}

app/src/main/java/com/limelight/binding/video/MediaCodecDecoderRenderer.java

@@ -0,0 +1,541 @@
+package com.limelight.binding.video;
+
+import java.nio.ByteBuffer;
+import java.util.Locale;
+import java.util.concurrent.locks.LockSupport;
+
+import org.jcodec.codecs.h264.io.model.SeqParameterSet;
+import org.jcodec.codecs.h264.io.model.VUIParameters;
+
+import com.limelight.LimeLog;
+import com.limelight.nvstream.av.ByteBufferDescriptor;
+import com.limelight.nvstream.av.DecodeUnit;
+import com.limelight.nvstream.av.video.VideoDecoderRenderer;
+import com.limelight.nvstream.av.video.VideoDepacketizer;
+
+import android.annotation.TargetApi;
+import android.media.MediaCodec;
+import android.media.MediaCodecInfo;
+import android.media.MediaFormat;
+import android.media.MediaCodec.BufferInfo;
+import android.media.MediaCodec.CodecException;
+import android.os.Build;
+import android.view.SurfaceHolder;
+
+@SuppressWarnings("unused")
+public class MediaCodecDecoderRenderer implements VideoDecoderRenderer {
+
+	private ByteBuffer[] videoDecoderInputBuffers;
+	private MediaCodec videoDecoder;
+	private Thread rendererThread;
+	private boolean needsSpsBitstreamFixup, isExynos4;
+	private VideoDepacketizer depacketizer;
+	private boolean adaptivePlayback;
+	private int initialWidth, initialHeight;
+	
+	private long lastTimestampUs;
+	private long totalTimeMs;
+	private long decoderTimeMs;
+	private int totalFrames;
+	
+	private String decoderName;
+	private int numSpsIn;
+	private int numPpsIn;
+	private int numIframeIn;
+	
+	private static final boolean ENABLE_ASYNC_RENDERER = false;
+	
+	@TargetApi(Build.VERSION_CODES.KITKAT)
+	public MediaCodecDecoderRenderer() {
+		//dumpDecoders();
+		
+		MediaCodecInfo decoder = MediaCodecHelper.findProbableSafeDecoder();
+		if (decoder == null) {
+			decoder = MediaCodecHelper.findFirstDecoder();
+		}
+		if (decoder == null) {
+			// This case is handled later in setup()
+			return;
+		}
+		
+		decoderName = decoder.getName();
+		
+		// Set decoder-specific attributes
+		adaptivePlayback = MediaCodecHelper.decoderSupportsAdaptivePlayback(decoderName, decoder);
+		needsSpsBitstreamFixup = MediaCodecHelper.decoderNeedsSpsBitstreamRestrictions(decoderName, decoder);
+		if (needsSpsBitstreamFixup) {
+			LimeLog.info("Decoder "+decoderName+" needs SPS bitstream restrictions fixup");
+		}
+		isExynos4 = MediaCodecHelper.isExynos4Device();
+		if (isExynos4) {
+			LimeLog.info("Decoder "+decoderName+" is on Exynos 4");
+		}
+	}
+	
+	@TargetApi(Build.VERSION_CODES.LOLLIPOP)
+	@Override
+	public boolean setup(int width, int height, int redrawRate, Object renderTarget, int drFlags) {
+		this.initialWidth = width;
+		this.initialHeight = height;
+		
+		if (decoderName == null) {
+			LimeLog.severe("No available hardware decoder!");
+			return false;
+		}
+		
+		// Codecs have been known to throw all sorts of crazy runtime exceptions
+		// due to implementation problems
+		try {
+			videoDecoder = MediaCodec.createByCodecName(decoderName);
+		} catch (Exception e) {
+			return false;
+		}
+		
+		MediaFormat videoFormat = MediaFormat.createVideoFormat("video/avc", width, height);
+		
+		// Adaptive playback can also be enabled by the whitelist on pre-KitKat devices
+		// so we don't fill these pre-KitKat
+		if (adaptivePlayback && Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
+			videoFormat.setInteger(MediaFormat.KEY_MAX_WIDTH, width);
+			videoFormat.setInteger(MediaFormat.KEY_MAX_HEIGHT, height);
+		}
+		
+		// On Lollipop, we use asynchronous mode to avoid having a busy looping renderer thread
+		if (ENABLE_ASYNC_RENDERER && Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+			videoDecoder.setCallback(new MediaCodec.Callback() {
+				@Override
+				public void onOutputFormatChanged(MediaCodec codec, MediaFormat format) {
+			    	LimeLog.info("Output format changed");
+			    	LimeLog.info("New output Format: " + format);
+				}
+				
+				@Override
+				public void onOutputBufferAvailable(MediaCodec codec, int index,
+						BufferInfo info) {
+					try {
+						// FIXME: It looks like we can't frameskip here
+						codec.releaseOutputBuffer(index, true);
+					} catch (Exception e) {
+						handleDecoderException(MediaCodecDecoderRenderer.this, e, null, 0);
+					}
+				}
+				
+				@Override
+				public void onInputBufferAvailable(MediaCodec codec, int index) {
+					try {
+						submitDecodeUnit(depacketizer.takeNextDecodeUnit(), codec.getInputBuffer(index), index);
+					} catch (InterruptedException e) {
+						// What do we do here?
+						e.printStackTrace();
+					} catch (Exception e) {
+						handleDecoderException(MediaCodecDecoderRenderer.this, e, null, 0);
+					}
+				}
+				
+				@Override
+				public void onError(MediaCodec codec, CodecException e) {
+					if (e.isTransient()) {
+						LimeLog.warning(e.getDiagnosticInfo());
+						e.printStackTrace();
+					}
+					else {
+						LimeLog.severe(e.getDiagnosticInfo());
+						e.printStackTrace();
+					}
+				}
+			});
+		}
+		
+		videoDecoder.configure(videoFormat, ((SurfaceHolder)renderTarget).getSurface(), null, 0);
+		videoDecoder.setVideoScalingMode(MediaCodec.VIDEO_SCALING_MODE_SCALE_TO_FIT);
+		
+		LimeLog.info("Using hardware decoding");
+		
+		return true;
+	}
+	
+	@TargetApi(Build.VERSION_CODES.LOLLIPOP)
+	private void handleDecoderException(MediaCodecDecoderRenderer dr, Exception e, ByteBuffer buf, int codecFlags) {
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+			if (e instanceof CodecException) {
+				CodecException codecExc = (CodecException) e;
+				
+				if (codecExc.isTransient()) {
+					// We'll let transient exceptions go
+					LimeLog.warning(codecExc.getDiagnosticInfo());
+					return;
+				}
+				
+				LimeLog.severe(codecExc.getDiagnosticInfo());
+			}
+		}
+		
+		if (buf != null || codecFlags != 0) {
+			throw new RendererException(dr, e, buf, codecFlags);
+		}
+		else {
+			throw new RendererException(dr, e);
+		}
+	}
+	
+	private void startRendererThread()
+	{
+		rendererThread = new Thread() {
+			@SuppressWarnings("deprecation")
+			@Override
+			public void run() {
+				BufferInfo info = new BufferInfo();
+				DecodeUnit du = null;
+				int inputIndex = -1;
+				while (!isInterrupted())
+				{
+					// In order to get as much data to the decoder as early as possible,
+					// try to submit up to 5 decode units at once without blocking.
+					if (inputIndex == -1 && du == null) {
+						try {
+							for (int i = 0; i < 5; i++) {
+								inputIndex = videoDecoder.dequeueInputBuffer(0);
+								du = depacketizer.pollNextDecodeUnit();
+
+								// Stop if we can't get a DU or input buffer
+								if (du == null || inputIndex == -1) {
+									break;
+								}
+								
+								submitDecodeUnit(du, videoDecoderInputBuffers[inputIndex], inputIndex);
+								
+								du = null;
+								inputIndex = -1;
+							}
+						} catch (Exception e) {
+							inputIndex = -1;
+							handleDecoderException(MediaCodecDecoderRenderer.this, e, null, 0);
+						}
+					}
+					
+					// Grab an input buffer if we don't have one already.
+					// This way we can have one ready hopefully by the time
+					// the depacketizer is done with this frame. It's important
+					// that this can timeout because it's possible that we could exhaust
+					// the decoder's input buffers and deadlocks because aren't pulling
+					// frames out of the other end.
+					if (inputIndex == -1) {
+						try {
+							// If we've got a DU waiting to be given to the decoder, 
+							// wait a full 3 ms for an input buffer. Otherwise
+							// just see if we can get one immediately.
+							inputIndex = videoDecoder.dequeueInputBuffer(du != null ? 3000 : 0);
+						} catch (Exception e) {
+							inputIndex = -1;
+							handleDecoderException(MediaCodecDecoderRenderer.this, e, null, 0);
+						}
+					}
+					
+					// Grab a decode unit if we don't have one already
+					if (du == null) {
+						du = depacketizer.pollNextDecodeUnit();
+					}
+					
+					// If we've got both a decode unit and an input buffer, we'll
+					// submit now. Otherwise, we wait until we have one.
+					if (du != null && inputIndex >= 0) {
+						submitDecodeUnit(du, videoDecoderInputBuffers[inputIndex], inputIndex);
+						
+						// DU and input buffer have both been consumed
+						du = null;
+						inputIndex = -1;
+					}
+					
+					// Try to output a frame
+					try {
+						int outIndex = videoDecoder.dequeueOutputBuffer(info, 0);
+
+					    if (outIndex >= 0) {
+					    	long presentationTimeUs = info.presentationTimeUs;
+						    int lastIndex = outIndex;
+						    
+						    // Get the last output buffer in the queue
+						    while ((outIndex = videoDecoder.dequeueOutputBuffer(info, 0)) >= 0) {
+						    	videoDecoder.releaseOutputBuffer(lastIndex, false);
+						    	lastIndex = outIndex;
+						    	presentationTimeUs = info.presentationTimeUs;
+						    }
+						    
+						    // Render the last buffer
+					    	videoDecoder.releaseOutputBuffer(lastIndex, true);
+					    	
+						    // Add delta time to the totals (excluding probable outliers)
+						    long delta = System.currentTimeMillis()-(presentationTimeUs/1000);
+						    if (delta > 5 && delta < 300) {
+						    	decoderTimeMs += delta;
+							    totalTimeMs += delta;
+						    }
+					    } else {
+						    switch (outIndex) {
+						    case MediaCodec.INFO_TRY_AGAIN_LATER:
+						    	// Getting an input buffer may already block
+						    	// so don't park if we still need to do that
+						    	if (inputIndex >= 0) {
+							    	LockSupport.parkNanos(1);
+						    	}
+						    	break;
+						    case MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED:
+						    	LimeLog.info("Output buffers changed");
+							    break;
+						    case MediaCodec.INFO_OUTPUT_FORMAT_CHANGED:
+						    	LimeLog.info("Output format changed");
+						    	LimeLog.info("New output Format: " + videoDecoder.getOutputFormat());
+						    	break;
+						    default:
+						      break;
+						    }
+					    }
+					} catch (Exception e) {
+						handleDecoderException(MediaCodecDecoderRenderer.this, e, null, 0);
+					}
+				}
+			}
+		};
+		rendererThread.setName("Video - Renderer (MediaCodec)");
+		rendererThread.setPriority(Thread.MAX_PRIORITY);
+		rendererThread.start();
+	}
+
+	@SuppressWarnings("deprecation")
+	@Override
+	public boolean start(VideoDepacketizer depacketizer) {
+		this.depacketizer = depacketizer;
+		
+		// Start the decoder
+		videoDecoder.start();
+		
+		// On devices pre-Lollipop, we'll use a rendering thread
+		if (!ENABLE_ASYNC_RENDERER || Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
+			videoDecoderInputBuffers = videoDecoder.getInputBuffers();
+			startRendererThread();
+		}
+		return true;
+	}
+
+	@Override
+	public void stop() {
+		if (rendererThread != null) {
+			// Halt the rendering thread
+			rendererThread.interrupt();
+			try {
+				rendererThread.join();
+			} catch (InterruptedException e) { }
+		}
+		
+		// Stop the decoder
+		videoDecoder.stop();
+	}
+
+	@Override
+	public void release() {
+		if (videoDecoder != null) {
+			videoDecoder.release();
+		}
+	}
+	
+	private void queueInputBuffer(int inputBufferIndex, int offset, int length, long timestampUs, int codecFlags) {
+		// Try 25 times to submit the input buffer before throwing a real exception
+		int i;
+		Exception lastException = null;
+		
+		for (i = 0; i < 25; i++) {
+			try {
+				videoDecoder.queueInputBuffer(inputBufferIndex,
+						0, length,
+						timestampUs, codecFlags);
+				break;
+			} catch (Exception e) {
+				handleDecoderException(this, e, null, codecFlags);
+				lastException = e;
+			}
+		}
+		
+		if (i == 25) {
+			throw new RendererException(this, lastException, null, codecFlags);
+		}
+	}
+
+	@SuppressWarnings("deprecation")
+	private void submitDecodeUnit(DecodeUnit decodeUnit, ByteBuffer buf, int inputBufferIndex) {
+		long currentTime = System.currentTimeMillis();
+		long delta = currentTime-decodeUnit.getReceiveTimestamp();
+		if (delta >= 0 && delta < 300) {
+		    totalTimeMs += currentTime-decodeUnit.getReceiveTimestamp();
+		    totalFrames++;
+		}
+		
+		long timestampUs = currentTime * 1000;
+		if (timestampUs <= lastTimestampUs) {
+			// We can't submit multiple buffers with the same timestamp
+			// so bump it up by one before queuing
+			timestampUs = lastTimestampUs + 1;
+		}
+		lastTimestampUs = timestampUs;
+		
+		// Clear old input data
+		buf.clear();
+		
+		int codecFlags = 0;
+		int decodeUnitFlags = decodeUnit.getFlags();
+		if ((decodeUnitFlags & DecodeUnit.DU_FLAG_CODEC_CONFIG) != 0) {
+			codecFlags |= MediaCodec.BUFFER_FLAG_CODEC_CONFIG;
+		}
+		if ((decodeUnitFlags & DecodeUnit.DU_FLAG_SYNC_FRAME) != 0) {
+			codecFlags |= MediaCodec.BUFFER_FLAG_SYNC_FRAME;
+			numIframeIn++;
+		}
+		
+		if ((decodeUnitFlags & DecodeUnit.DU_FLAG_CODEC_CONFIG) != 0) {
+			ByteBufferDescriptor header = decodeUnit.getBufferList().get(0);
+			if (header.data[header.offset+4] == 0x67) {
+				numSpsIn++;
+				
+				ByteBuffer spsBuf = ByteBuffer.wrap(header.data);
+				
+				// Skip to the start of the NALU data
+				spsBuf.position(header.offset+5);
+				
+				SeqParameterSet sps = SeqParameterSet.read(spsBuf);
+				
+				// TI OMAP4 requires a reference frame count of 1 to decode successfully. Exynos 4
+				// also requires this fixup.
+				//
+				// I'm doing this fixup for all devices because I haven't seen any devices that
+				// this causes issues for. At worst, it seems to do nothing and at best it fixes
+				// issues with video lag, hangs, and crashes.
+				LimeLog.info("Patching num_ref_frames in SPS");
+				sps.num_ref_frames = 1;
+				
+				if (needsSpsBitstreamFixup || isExynos4) {
+					// The SPS that comes in the current H264 bytestream doesn't set bitstream_restriction_flag
+					// or max_dec_frame_buffering which increases decoding latency on Tegra.
+					LimeLog.info("Adding bitstream restrictions");
+
+					sps.vuiParams.bitstreamRestriction = new VUIParameters.BitstreamRestriction();
+					sps.vuiParams.bitstreamRestriction.motion_vectors_over_pic_boundaries_flag = true;
+					sps.vuiParams.bitstreamRestriction.max_bytes_per_pic_denom = 2;
+					sps.vuiParams.bitstreamRestriction.max_bits_per_mb_denom = 1;
+					sps.vuiParams.bitstreamRestriction.log2_max_mv_length_horizontal = 16;
+					sps.vuiParams.bitstreamRestriction.log2_max_mv_length_vertical = 16;
+					sps.vuiParams.bitstreamRestriction.num_reorder_frames = 0;
+					sps.vuiParams.bitstreamRestriction.max_dec_frame_buffering = 1;
+				}
+				
+				// Write the annex B header
+				buf.put(header.data, header.offset, 5);
+				
+				// Write the modified SPS to the input buffer
+				sps.write(buf);
+				
+				queueInputBuffer(inputBufferIndex,
+						0, buf.position(),
+						timestampUs, codecFlags);
+				
+				depacketizer.freeDecodeUnit(decodeUnit);
+				return;
+			} else if (header.data[header.offset+4] == 0x68) {
+				numPpsIn++;
+			}
+		}
+
+		// Copy data from our buffer list into the input buffer
+		for (ByteBufferDescriptor desc : decodeUnit.getBufferList())
+		{
+			buf.put(desc.data, desc.offset, desc.length);
+		}
+
+		queueInputBuffer(inputBufferIndex,
+				0, decodeUnit.getDataLength(),
+				timestampUs, codecFlags);
+		
+		depacketizer.freeDecodeUnit(decodeUnit);
+		return;
+	}
+
+	@Override
+	public int getCapabilities() {
+		return adaptivePlayback ?
+				VideoDecoderRenderer.CAPABILITY_ADAPTIVE_RESOLUTION : 0;
+	}
+
+	@Override
+	public int getAverageDecoderLatency() {
+		if (totalFrames == 0) {
+			return 0;
+		}
+		return (int)(decoderTimeMs / totalFrames);
+	}
+
+	@Override
+	public int getAverageEndToEndLatency() {
+		if (totalFrames == 0) {
+			return 0;
+		}
+		return (int)(totalTimeMs / totalFrames);
+	}
+	
+	public class RendererException extends RuntimeException {
+		private static final long serialVersionUID = 8985937536997012406L;
+		
+		private Exception originalException;
+		private MediaCodecDecoderRenderer renderer;
+		private ByteBuffer currentBuffer;
+		private int currentCodecFlags;
+		
+		public RendererException(MediaCodecDecoderRenderer renderer, Exception e) {
+			this.renderer = renderer;
+			this.originalException = e;
+		}
+		
+		public RendererException(MediaCodecDecoderRenderer renderer, Exception e, ByteBuffer currentBuffer, int currentCodecFlags) {
+			this.renderer = renderer;
+			this.originalException = e;
+			this.currentBuffer = currentBuffer;
+			this.currentCodecFlags = currentCodecFlags;
+		}
+		
+		public String toString() {
+			String str = "";
+			
+			str += "Decoder: "+renderer.decoderName+"\n";
+			str += "Initial video dimensions: "+renderer.initialWidth+"x"+renderer.initialHeight+"\n";
+			str += "In stats: "+renderer.numSpsIn+", "+renderer.numPpsIn+", "+renderer.numIframeIn+"\n";
+			str += "Total frames: "+renderer.totalFrames+"\n";
+			
+			if (currentBuffer != null) {
+				str += "Current buffer: ";
+				currentBuffer.flip();
+				while (currentBuffer.hasRemaining() && currentBuffer.position() < 10) {
+					str += String.format((Locale)null, "%02x ", currentBuffer.get());
+				}
+				str += "\n";
+				str += "Buffer codec flags: "+currentCodecFlags+"\n";
+			}
+			
+			str += "Is Exynos 4: "+renderer.isExynos4+"\n";
+			
+			str += "/proc/cpuinfo:\n";
+			try {
+				str += MediaCodecHelper.readCpuinfo();
+			} catch (Exception e) {
+				str += e.getMessage();
+			}
+			
+			str += "Full decoder dump:\n";
+			try {
+				str += MediaCodecHelper.dumpDecoders();
+			} catch (Exception e) {
+				str += e.getMessage();
+			}
+			
+			str += originalException.toString();
+			
+			return str;
+		}
+	}
+}

app/src/main/java/com/limelight/binding/video/MediaCodecHelper.java

@@ -0,0 +1,299 @@
+package com.limelight.binding.video;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Locale;
+
+import android.annotation.SuppressLint;
+import android.annotation.TargetApi;
+import android.media.MediaCodecInfo;
+import android.media.MediaCodecList;
+import android.media.MediaCodecInfo.CodecCapabilities;
+import android.media.MediaCodecInfo.CodecProfileLevel;
+import android.os.Build;
+
+import com.limelight.LimeLog;
+
+public class MediaCodecHelper {
+	
+	public static final List<String> preferredDecoders;
+
+	public static final List<String> blacklistedDecoderPrefixes;
+	public static final List<String> spsFixupBitstreamFixupDecoderPrefixes;
+	public static final List<String> whitelistedAdaptiveResolutionPrefixes;
+	
+	static {
+		preferredDecoders = new LinkedList<String>();
+	}
+	
+	static {
+		blacklistedDecoderPrefixes = new LinkedList<String>();
+		
+		// Software decoders that don't support H264 high profile
+		blacklistedDecoderPrefixes.add("omx.google");
+		blacklistedDecoderPrefixes.add("AVCDecoder");
+	}
+	
+	static {
+		spsFixupBitstreamFixupDecoderPrefixes = new LinkedList<String>();
+		spsFixupBitstreamFixupDecoderPrefixes.add("omx.nvidia");
+		spsFixupBitstreamFixupDecoderPrefixes.add("omx.qcom");
+		spsFixupBitstreamFixupDecoderPrefixes.add("omx.mtk");
+		
+		whitelistedAdaptiveResolutionPrefixes = new LinkedList<String>();
+		whitelistedAdaptiveResolutionPrefixes.add("omx.nvidia");
+		whitelistedAdaptiveResolutionPrefixes.add("omx.qcom");
+		whitelistedAdaptiveResolutionPrefixes.add("omx.sec");
+		whitelistedAdaptiveResolutionPrefixes.add("omx.TI");
+	}
+
+	private static boolean isDecoderInList(List<String> decoderList, String decoderName) {
+		for (String badPrefix : decoderList) {
+			if (decoderName.length() >= badPrefix.length()) {
+				String prefix = decoderName.substring(0, badPrefix.length());
+				if (prefix.equalsIgnoreCase(badPrefix)) {
+					return true;
+				}
+			}
+		}
+		
+		return false;
+	}
+	
+	@TargetApi(Build.VERSION_CODES.KITKAT)
+	public static boolean decoderSupportsAdaptivePlayback(String decoderName, MediaCodecInfo decoderInfo) {
+		if (isDecoderInList(whitelistedAdaptiveResolutionPrefixes, decoderName)) {
+			LimeLog.info("Adaptive playback supported (whitelist)");
+			return true;
+		}
+		
+		// Possibly enable adaptive playback on KitKat and above
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
+			try {
+				if (decoderInfo.getCapabilitiesForType("video/avc").
+						isFeatureSupported(CodecCapabilities.FEATURE_AdaptivePlayback))
+				{
+					// This will make getCapabilities() return that adaptive playback is supported
+					LimeLog.info("Adaptive playback supported (FEATURE_AdaptivePlayback)");
+					return true;
+				}
+			} catch (Exception e) {
+				// Tolerate buggy codecs
+			}
+		}
+		
+		return false;
+	}
+	
+	public static boolean decoderNeedsSpsBitstreamRestrictions(String decoderName, MediaCodecInfo decoderInfo) {
+		return isDecoderInList(spsFixupBitstreamFixupDecoderPrefixes, decoderName);
+	}
+	
+	@SuppressWarnings("deprecation")
+	@SuppressLint("NewApi")
+	private static LinkedList<MediaCodecInfo> getMediaCodecList() {
+		LinkedList<MediaCodecInfo> infoList = new LinkedList<MediaCodecInfo>();
+		
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+			MediaCodecList mcl = new MediaCodecList(MediaCodecList.REGULAR_CODECS);
+			for (MediaCodecInfo info : mcl.getCodecInfos()) {
+				infoList.add(info);
+			}
+		}
+		else {
+			for (int i = 0; i < MediaCodecList.getCodecCount(); i++) {
+				infoList.add(MediaCodecList.getCodecInfoAt(i));
+			}	
+		}
+		
+		return infoList;
+	}
+	
+	public static String dumpDecoders() throws Exception {
+		String str = "";
+		for (MediaCodecInfo codecInfo : getMediaCodecList()) {
+			// Skip encoders
+			if (codecInfo.isEncoder()) {
+				continue;
+			}
+			
+			str += "Decoder: "+codecInfo.getName()+"\n";
+			for (String type : codecInfo.getSupportedTypes()) {
+				str += "\t"+type+"\n";
+				CodecCapabilities caps = codecInfo.getCapabilitiesForType(type);
+				
+				for (CodecProfileLevel profile : caps.profileLevels) {
+					str += "\t\t"+profile.profile+" "+profile.level+"\n";
+				}
+			}
+		}
+		return str;
+	}
+	
+	public static MediaCodecInfo findPreferredDecoder() {
+		// This is a different algorithm than the other findXXXDecoder functions,
+		// because we want to evaluate the decoders in our list's order
+		// rather than MediaCodecList's order
+		
+		for (String preferredDecoder : preferredDecoders) {
+			for (MediaCodecInfo codecInfo : getMediaCodecList()) {
+				// Skip encoders
+				if (codecInfo.isEncoder()) {
+					continue;
+				}
+				
+				// Check for preferred decoders
+				if (preferredDecoder.equalsIgnoreCase(codecInfo.getName())) {
+					LimeLog.info("Preferred decoder choice is "+codecInfo.getName());
+					return codecInfo;
+				}
+			}
+		}
+		
+		return null;
+	}
+	
+	public static MediaCodecInfo findFirstDecoder() {
+		for (MediaCodecInfo codecInfo : getMediaCodecList()) {
+			// Skip encoders
+			if (codecInfo.isEncoder()) {
+				continue;
+			}
+			
+			// Check for explicitly blacklisted decoders
+			if (isDecoderInList(blacklistedDecoderPrefixes, codecInfo.getName())) {
+				LimeLog.info("Skipping blacklisted decoder: "+codecInfo.getName());
+				continue;
+			}
+			
+			// Find a decoder that supports H.264
+			for (String mime : codecInfo.getSupportedTypes()) {
+				if (mime.equalsIgnoreCase("video/avc")) {
+					LimeLog.info("First decoder choice is "+codecInfo.getName());
+					return codecInfo;
+				}
+			}
+		}
+		
+		return null;
+	}
+	
+	public static MediaCodecInfo findProbableSafeDecoder() {
+		// First look for a preferred decoder by name
+		MediaCodecInfo info = findPreferredDecoder();
+		if (info != null) {
+			return info;
+		}
+		
+		// Now look for decoders we know are safe
+		try {
+			// If this function completes, it will determine if the decoder is safe
+			return findKnownSafeDecoder();
+		} catch (Exception e) {
+			// Some buggy devices seem to throw exceptions
+			// from getCapabilitiesForType() so we'll just assume
+			// they're okay and go with the first one we find
+			return findFirstDecoder();
+		}
+	}
+
+	// We declare this method as explicitly throwing Exception
+	// since some bad decoders can throw IllegalArgumentExceptions unexpectedly
+	// and we want to be sure all callers are handling this possibility
+	public static MediaCodecInfo findKnownSafeDecoder() throws Exception {
+		for (MediaCodecInfo codecInfo : getMediaCodecList()) {		
+			// Skip encoders
+			if (codecInfo.isEncoder()) {
+				continue;
+			}
+			
+			// Check for explicitly blacklisted decoders
+			if (isDecoderInList(blacklistedDecoderPrefixes, codecInfo.getName())) {
+				LimeLog.info("Skipping blacklisted decoder: "+codecInfo.getName());
+				continue;
+			}
+			
+			// Find a decoder that supports H.264 high profile
+			for (String mime : codecInfo.getSupportedTypes()) {
+				if (mime.equalsIgnoreCase("video/avc")) {
+					LimeLog.info("Examining decoder capabilities of "+codecInfo.getName());
+					
+					CodecCapabilities caps = codecInfo.getCapabilitiesForType(mime);
+					for (CodecProfileLevel profile : caps.profileLevels) {
+						if (profile.profile == CodecProfileLevel.AVCProfileHigh) {
+							LimeLog.info("Decoder "+codecInfo.getName()+" supports high profile");
+							LimeLog.info("Selected decoder: "+codecInfo.getName());
+							return codecInfo;
+						}
+					}
+					
+					LimeLog.info("Decoder "+codecInfo.getName()+" does NOT support high profile");
+				}
+			}
+		}
+		
+		return null;
+	}
+	
+	public static String readCpuinfo() throws Exception {
+		StringBuilder cpuInfo = new StringBuilder();
+		BufferedReader br = new BufferedReader(new FileReader(new File("/proc/cpuinfo")));
+		try {
+			for (;;) {
+				int ch = br.read();
+				if (ch == -1)
+					break;
+				cpuInfo.append((char)ch);
+			}
+			
+			return cpuInfo.toString();
+		} finally {
+			br.close();
+		}
+	}
+	
+	private static boolean stringContainsIgnoreCase(String string, String substring) {
+		return string.toLowerCase(Locale.ENGLISH).contains(substring.toLowerCase(Locale.ENGLISH));
+	}
+	
+	public static boolean isExynos4Device() {
+		try {
+			// Try reading CPU info too look for 
+			String cpuInfo = readCpuinfo();
+			
+			// SMDK4xxx is Exynos 4 
+			if (stringContainsIgnoreCase(cpuInfo, "SMDK4")) {
+				LimeLog.info("Found SMDK4 in /proc/cpuinfo");
+				return true;
+			}
+			
+			// If we see "Exynos 4" also we'll count it
+			if (stringContainsIgnoreCase(cpuInfo, "Exynos 4")) {
+				LimeLog.info("Found Exynos 4 in /proc/cpuinfo");
+				return true;
+			}
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+		
+		try {
+			File systemDir = new File("/sys/devices/system");
+			File[] files = systemDir.listFiles();
+			if (files != null) {
+				for (File f : files) {
+					if (stringContainsIgnoreCase(f.getName(), "exynos4")) {
+						LimeLog.info("Found exynos4 in /sys/devices/system");
+						return true;
+					}
+				}
+			}
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+		
+		return false;
+	}
+}