441 lines
12 KiB
Java

package com.limelight.nvstream;
import java.io.IOException;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;
import java.security.NoSuchAlgorithmException;
import java.util.Enumeration;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import org.xmlpull.v1.XmlPullParserException;
import com.limelight.LimeLog;
import com.limelight.nvstream.av.audio.AudioStream;
import com.limelight.nvstream.av.audio.AudioRenderer;
import com.limelight.nvstream.av.video.VideoDecoderRenderer;
import com.limelight.nvstream.av.video.VideoStream;
import com.limelight.nvstream.control.ControlStream;
import com.limelight.nvstream.http.GfeHttpResponseException;
import com.limelight.nvstream.http.LimelightCryptoProvider;
import com.limelight.nvstream.http.NvApp;
import com.limelight.nvstream.http.NvHTTP;
import com.limelight.nvstream.http.PairingManager;
import com.limelight.nvstream.input.NvController;
import com.limelight.nvstream.rtsp.RtspConnection;
public class NvConnection {
private String host;
private NvConnectionListener listener;
private StreamConfiguration config;
private LimelightCryptoProvider cryptoProvider;
private String uniqueId;
private InetAddress hostAddr;
private ControlStream controlStream;
private NvController inputStream;
private VideoStream videoStream;
private AudioStream audioStream;
// Start parameters
private int drFlags;
private Object videoRenderTarget;
private VideoDecoderRenderer videoDecoderRenderer;
private AudioRenderer audioRenderer;
private String localDeviceName;
private SecretKey riKey;
private ThreadPoolExecutor threadPool;
public NvConnection(String host, String uniqueId, NvConnectionListener listener, StreamConfiguration config, LimelightCryptoProvider cryptoProvider)
{
this.host = host;
this.listener = listener;
this.config = config;
this.cryptoProvider = cryptoProvider;
this.uniqueId = uniqueId;
try {
// This is unique per connection
this.riKey = generateRiAesKey();
} catch (NoSuchAlgorithmException e) {
// Should never happen
e.printStackTrace();
}
this.threadPool = new ThreadPoolExecutor(1, 1, Long.MAX_VALUE, TimeUnit.DAYS,
new LinkedBlockingQueue<Runnable>(), new ThreadPoolExecutor.DiscardPolicy());
}
private static SecretKey generateRiAesKey() throws NoSuchAlgorithmException {
KeyGenerator keyGen = KeyGenerator.getInstance("AES");
// RI keys are 128 bits
keyGen.init(128);
return keyGen.generateKey();
}
public static String getMacAddressString() throws SocketException {
Enumeration<NetworkInterface> ifaceList;
NetworkInterface selectedIface = null;
// First look for a WLAN interface (since those generally aren't removable)
ifaceList = NetworkInterface.getNetworkInterfaces();
while (selectedIface == null && ifaceList.hasMoreElements()) {
NetworkInterface iface = ifaceList.nextElement();
if (iface.getName().startsWith("wlan") &&
iface.getHardwareAddress() != null &&
iface.getHardwareAddress().length > 0) {
selectedIface = iface;
}
}
// If we didn't find that, look for an Ethernet interface
ifaceList = NetworkInterface.getNetworkInterfaces();
while (selectedIface == null && ifaceList.hasMoreElements()) {
NetworkInterface iface = ifaceList.nextElement();
if (iface.getName().startsWith("eth") &&
iface.getHardwareAddress() != null &&
iface.getHardwareAddress().length > 0) {
selectedIface = iface;
}
}
// Now just find something with a MAC address
ifaceList = NetworkInterface.getNetworkInterfaces();
while (selectedIface == null && ifaceList.hasMoreElements()) {
NetworkInterface iface = ifaceList.nextElement();
if (iface.getHardwareAddress() != null &&
iface.getHardwareAddress().length > 0) {
selectedIface = iface;
break;
}
}
if (selectedIface == null) {
return null;
}
byte[] macAddress = selectedIface.getHardwareAddress();
if (macAddress != null) {
StringBuilder addrStr = new StringBuilder();
for (int i = 0; i < macAddress.length; i++) {
addrStr.append(String.format("%02x", macAddress[i]));
if (i != macAddress.length - 1) {
addrStr.append(':');
}
}
return addrStr.toString();
}
return null;
}
public void stop()
{
threadPool.shutdownNow();
if (videoStream != null) {
videoStream.abort();
}
if (audioStream != null) {
audioStream.abort();
}
if (controlStream != null) {
controlStream.abort();
}
if (inputStream != null) {
inputStream.close();
inputStream = null;
}
}
private boolean startApp() throws XmlPullParserException, IOException
{
NvHTTP h = new NvHTTP(hostAddr, uniqueId, localDeviceName, cryptoProvider);
if (h.getServerVersion().startsWith("1.")) {
listener.displayMessage("Limelight now requires GeForce Experience 2.0.1 or later. Please upgrade GFE on your PC and try again.");
return false;
}
if (h.getPairState() != PairingManager.PairState.PAIRED) {
listener.displayMessage("Device not paired with computer");
return false;
}
NvApp app = h.getApp(config.getApp());
if (app == null) {
listener.displayMessage("The app " + config.getApp() + " is not in GFE app list");
return false;
}
// If there's a game running, resume it
if (h.getCurrentGame() != 0) {
try {
if (h.getCurrentGame() == app.getAppId() && !h.resumeApp(riKey)) {
listener.displayMessage("Failed to resume existing session");
return false;
} else if (h.getCurrentGame() != app.getAppId()) {
listener.displayMessage("Another app was running. Quitting it");
return quitAndLaunch(h, app);
}
} catch (GfeHttpResponseException e) {
if (e.getErrorCode() == 470) {
// This is the error you get when you try to resume a session that's not yours.
// Because this is fairly common, we'll display a more detailed message.
listener.displayMessage("This session wasn't started by this device," +
" so it cannot be resumed. End streaming on the original " +
"device or the PC itself and try again. (Error code: "+e.getErrorCode()+")");
return false;
}
else if (e.getErrorCode() == 525) {
listener.displayMessage("The application is minimized. Trying to quit it");
return quitAndLaunch(h, app);
} else {
throw e;
}
}
LimeLog.info("Resumed existing game session");
return true;
}
else {
return launchNotRunningApp(h, app);
}
}
protected boolean quitAndLaunch(NvHTTP h, NvApp app) throws IOException,
XmlPullParserException {
if (!h.quitApp()) {
listener.displayMessage("Failed to quit previous session! You must quit it manually");
return false;
} else {
return launchNotRunningApp(h, app);
}
}
private boolean launchNotRunningApp(NvHTTP h, NvApp app)
throws IOException, XmlPullParserException {
// Launch the app since it's not running
int gameSessionId = h.launchApp(app.getAppId(), config.getWidth(),
config.getHeight(), config.getRefreshRate(), riKey);
if (gameSessionId == 0) {
listener.displayMessage("Failed to launch application");
return false;
}
LimeLog.info("Launched new game session");
return true;
}
private boolean doRtspHandshake() throws IOException
{
RtspConnection r = new RtspConnection(hostAddr);
r.doRtspHandshake(config);
return true;
}
private boolean startControlStream() throws IOException
{
controlStream = new ControlStream(hostAddr, listener);
controlStream.initialize();
controlStream.start();
return true;
}
private boolean startVideoStream() throws IOException
{
videoStream = new VideoStream(hostAddr, listener, controlStream, config);
return videoStream.startVideoStream(videoDecoderRenderer, videoRenderTarget, drFlags);
}
private boolean startAudioStream() throws IOException
{
audioStream = new AudioStream(hostAddr, listener, audioRenderer);
return audioStream.startAudioStream();
}
private boolean startInputConnection() throws IOException
{
// Because input events can be delivered at any time, we must only assign
// it to the instance variable once the object is properly initialized.
// This avoids the race where inputStream != null but inputStream.initialize()
// has not returned yet.
NvController tempController = new NvController(hostAddr, riKey);
tempController.initialize();
inputStream = tempController;
return true;
}
private void establishConnection() {
for (NvConnectionListener.Stage currentStage : NvConnectionListener.Stage.values())
{
boolean success = false;
listener.stageStarting(currentStage);
try {
switch (currentStage)
{
case LAUNCH_APP:
success = startApp();
break;
case RTSP_HANDSHAKE:
success = doRtspHandshake();
break;
case CONTROL_START:
success = startControlStream();
break;
case VIDEO_START:
success = startVideoStream();
break;
case AUDIO_START:
success = startAudioStream();
break;
case INPUT_START:
success = startInputConnection();
break;
}
} catch (Exception e) {
e.printStackTrace();
listener.displayMessage(e.getMessage());
success = false;
}
if (success) {
listener.stageComplete(currentStage);
}
else {
listener.stageFailed(currentStage);
return;
}
}
listener.connectionStarted();
}
public void start(String localDeviceName, Object videoRenderTarget, int drFlags, AudioRenderer audioRenderer, VideoDecoderRenderer videoDecoderRenderer)
{
this.localDeviceName = localDeviceName;
this.drFlags = drFlags;
this.audioRenderer = audioRenderer;
this.videoRenderTarget = videoRenderTarget;
this.videoDecoderRenderer = videoDecoderRenderer;
new Thread(new Runnable() {
public void run() {
try {
hostAddr = InetAddress.getByName(host);
} catch (UnknownHostException e) {
listener.connectionTerminated(e);
return;
}
establishConnection();
}
}).start();
}
public void sendMouseMove(final short deltaX, final short deltaY)
{
if (inputStream == null)
return;
threadPool.execute(new Runnable() {
public void run() {
try {
inputStream.sendMouseMove(deltaX, deltaY);
} catch (IOException e) {
listener.connectionTerminated(e);
}
}
});
}
public void sendMouseButtonDown(final byte mouseButton)
{
if (inputStream == null)
return;
threadPool.execute(new Runnable() {
public void run() {
try {
inputStream.sendMouseButtonDown(mouseButton);
} catch (IOException e) {
listener.connectionTerminated(e);
}
}
});
}
public void sendMouseButtonUp(final byte mouseButton)
{
if (inputStream == null)
return;
threadPool.execute(new Runnable() {
public void run() {
try {
inputStream.sendMouseButtonUp(mouseButton);
} catch (IOException e) {
listener.connectionTerminated(e);
}
}
});
}
public void sendControllerInput(final short buttonFlags,
final byte leftTrigger, final byte rightTrigger,
final short leftStickX, final short leftStickY,
final short rightStickX, final short rightStickY)
{
if (inputStream == null)
return;
threadPool.execute(new Runnable() {
public void run() {
try {
inputStream.sendControllerInput(buttonFlags, leftTrigger,
rightTrigger, leftStickX, leftStickY,
rightStickX, rightStickY);
} catch (IOException e) {
listener.connectionTerminated(e);
}
}
});
}
public void sendKeyboardInput(final short keyMap, final byte keyDirection, final byte modifier) {
if (inputStream == null)
return;
threadPool.execute(new Runnable() {
public void run() {
try {
inputStream.sendKeyboardInput(keyMap, keyDirection, modifier);
} catch (IOException e) {
listener.connectionTerminated(e);
}
}
});
}
}