Cameron Gutman
412 lines
12 KiB
Java
412 lines
12 KiB
Java
package com.limelight.nvstream;
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import java.io.IOException;
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import java.net.InetAddress;
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import java.net.UnknownHostException;
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import java.security.NoSuchAlgorithmException;
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import java.security.SecureRandom;
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import javax.crypto.KeyGenerator;
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import javax.crypto.SecretKey;
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import org.xmlpull.v1.XmlPullParserException;
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import com.limelight.LimeLog;
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import com.limelight.nvstream.av.audio.AudioStream;
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import com.limelight.nvstream.av.audio.AudioRenderer;
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import com.limelight.nvstream.av.video.VideoDecoderRenderer;
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import com.limelight.nvstream.av.video.VideoStream;
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import com.limelight.nvstream.control.ControlStream;
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import com.limelight.nvstream.http.GfeHttpResponseException;
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import com.limelight.nvstream.http.LimelightCryptoProvider;
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import com.limelight.nvstream.http.NvApp;
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import com.limelight.nvstream.http.NvHTTP;
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import com.limelight.nvstream.http.PairingManager;
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import com.limelight.nvstream.input.ControllerStream;
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import com.limelight.nvstream.rtsp.RtspConnection;
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public class NvConnection {
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// Context parameters
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private String host;
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private LimelightCryptoProvider cryptoProvider;
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private String uniqueId;
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private ConnectionContext context;
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// Stream objects
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private ControlStream controlStream;
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private ControllerStream inputStream;
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private VideoStream videoStream;
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private AudioStream audioStream;
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// Start parameters
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private int drFlags;
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private Object videoRenderTarget;
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private AudioRenderer audioRenderer;
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public NvConnection(String host, String uniqueId, NvConnectionListener listener, StreamConfiguration config, LimelightCryptoProvider cryptoProvider)
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{
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this.host = host;
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this.cryptoProvider = cryptoProvider;
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this.uniqueId = uniqueId;
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this.context = new ConnectionContext();
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this.context.connListener = listener;
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this.context.streamConfig = config;
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try {
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// This is unique per connection
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this.context.riKey = generateRiAesKey();
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} catch (NoSuchAlgorithmException e) {
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// Should never happen
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e.printStackTrace();
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}
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this.context.riKeyId = generateRiKeyId();
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}
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private static SecretKey generateRiAesKey() throws NoSuchAlgorithmException {
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KeyGenerator keyGen = KeyGenerator.getInstance("AES");
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// RI keys are 128 bits
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keyGen.init(128);
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return keyGen.generateKey();
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}
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private static int generateRiKeyId() {
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return new SecureRandom().nextInt();
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}
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public void stop()
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{
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if (videoStream != null) {
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videoStream.abort();
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}
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if (audioStream != null) {
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audioStream.abort();
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}
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if (controlStream != null) {
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controlStream.abort();
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}
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if (inputStream != null) {
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inputStream.abort();
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inputStream = null;
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}
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}
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private boolean startApp() throws XmlPullParserException, IOException
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{
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NvHTTP h = new NvHTTP(context.serverAddress, uniqueId, null, cryptoProvider);
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String serverInfo = h.getServerInfo(uniqueId);
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String serverVersion = h.getServerVersion(serverInfo);
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if (serverVersion == null || serverVersion.indexOf('.') < 0) {
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context.connListener.displayMessage("Server major version not present");
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return false;
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}
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try {
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int majorVersion = Integer.parseInt(serverVersion.substring(0, serverVersion.indexOf('.')));
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if (majorVersion < 3) {
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// Even though we support major version 3 (2.1.x), GFE 2.2.2 is preferred.
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context.connListener.displayMessage("This app requires GeForce Experience 2.2.2 or later. Please upgrade GFE on your PC and try again.");
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return false;
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}
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else if (majorVersion > 4) {
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// Warn the user but allow them to continue
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context.connListener.displayTransientMessage("This version of GFE is not currently supported. You may experience issues until this app is updated.");
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}
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switch (majorVersion) {
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case 3:
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context.serverGeneration = ConnectionContext.SERVER_GENERATION_3;
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break;
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case 4:
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default:
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context.serverGeneration = ConnectionContext.SERVER_GENERATION_4;
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break;
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}
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LimeLog.info("Server major version: "+majorVersion);
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} catch (NumberFormatException e) {
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context.connListener.displayMessage("Server version malformed: "+serverVersion);
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return false;
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}
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if (h.getPairState(serverInfo) != PairingManager.PairState.PAIRED) {
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context.connListener.displayMessage("Device not paired with computer");
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return false;
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}
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NvApp app = context.streamConfig.getApp();
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// If the client did not provide an exact app ID, do a lookup with the applist
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if (!context.streamConfig.getApp().isInitialized()) {
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LimeLog.info("Using deprecated app lookup method - Please specify an app ID in your StreamConfiguration instead");
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app = h.getAppByName(context.streamConfig.getApp().getAppName());
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if (app == null) {
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context.connListener.displayMessage("The app " + context.streamConfig.getApp().getAppName() + " is not in GFE app list");
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return false;
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}
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}
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// Update the running status of the app
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app.setIsRunning(h.getCurrentGame(serverInfo) == app.getAppId());
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// If there's a game running, resume it
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if (h.getCurrentGame(serverInfo) != 0) {
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try {
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if (app.getIsRunning()) {
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if (!h.resumeApp(context)) {
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context.connListener.displayMessage("Failed to resume existing session");
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return false;
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}
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} else if (h.getCurrentGame(serverInfo) != app.getAppId()) {
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return quitAndLaunch(h, app);
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}
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} catch (GfeHttpResponseException e) {
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if (e.getErrorCode() == 470) {
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// This is the error you get when you try to resume a session that's not yours.
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// Because this is fairly common, we'll display a more detailed message.
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context.connListener.displayMessage("This session wasn't started by this device," +
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" so it cannot be resumed. End streaming on the original " +
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"device or the PC itself and try again. (Error code: "+e.getErrorCode()+")");
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return false;
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}
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else if (e.getErrorCode() == 525) {
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context.connListener.displayMessage("The application is minimized. Resume it on the PC manually or " +
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"quit the session and start streaming again.");
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return false;
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} else {
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throw e;
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}
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}
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LimeLog.info("Resumed existing game session");
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return true;
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}
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else {
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return launchNotRunningApp(h, app);
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}
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}
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protected boolean quitAndLaunch(NvHTTP h, NvApp app) throws IOException,
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XmlPullParserException {
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try {
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if (!h.quitApp()) {
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context.connListener.displayMessage("Failed to quit previous session! You must quit it manually");
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return false;
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}
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} catch (GfeHttpResponseException e) {
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if (e.getErrorCode() == 599) {
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context.connListener.displayMessage("This session wasn't started by this device," +
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" so it cannot be quit. End streaming on the original " +
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"device or the PC itself. (Error code: "+e.getErrorCode()+")");
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return false;
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}
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else {
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throw e;
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}
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}
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return launchNotRunningApp(h, app);
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}
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private boolean launchNotRunningApp(NvHTTP h, NvApp app)
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throws IOException, XmlPullParserException {
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// Launch the app since it's not running
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int gameSessionId = h.launchApp(context, app.getAppId());
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if (gameSessionId == 0) {
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context.connListener.displayMessage("Failed to launch application");
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return false;
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}
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LimeLog.info("Launched new game session");
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return true;
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}
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private boolean doRtspHandshake() throws IOException
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{
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RtspConnection r = new RtspConnection(context);
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r.doRtspHandshake();
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return true;
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}
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private boolean startControlStream() throws IOException
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{
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controlStream = new ControlStream(context);
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controlStream.initialize();
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controlStream.start();
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return true;
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}
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private boolean startVideoStream() throws IOException
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{
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videoStream = new VideoStream(context, controlStream);
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return videoStream.startVideoStream(videoRenderTarget, drFlags);
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}
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private boolean startAudioStream() throws IOException
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{
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audioStream = new AudioStream(context, audioRenderer);
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return audioStream.startAudioStream();
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}
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private boolean startInputConnection() throws IOException
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{
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// Because input events can be delivered at any time, we must only assign
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// it to the instance variable once the object is properly initialized.
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// This avoids the race where inputStream != null but inputStream.initialize()
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// has not returned yet.
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ControllerStream tempController = new ControllerStream(context);
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tempController.initialize();
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tempController.start();
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inputStream = tempController;
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return true;
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}
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private void establishConnection() {
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for (NvConnectionListener.Stage currentStage : NvConnectionListener.Stage.values())
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{
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boolean success = false;
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if (currentStage == NvConnectionListener.Stage.LAUNCH_APP) {
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// Display the app name instead of the stage name
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currentStage.setName(context.streamConfig.getApp().getAppName());
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}
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context.connListener.stageStarting(currentStage);
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try {
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switch (currentStage)
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{
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case LAUNCH_APP:
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success = startApp();
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break;
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case RTSP_HANDSHAKE:
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success = doRtspHandshake();
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break;
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case CONTROL_START:
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success = startControlStream();
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break;
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case VIDEO_START:
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success = startVideoStream();
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break;
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case AUDIO_START:
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success = startAudioStream();
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break;
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case INPUT_START:
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success = startInputConnection();
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break;
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}
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} catch (Exception e) {
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e.printStackTrace();
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context.connListener.displayMessage(e.getMessage());
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success = false;
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}
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if (success) {
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context.connListener.stageComplete(currentStage);
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}
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else {
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context.connListener.stageFailed(currentStage);
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return;
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}
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}
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context.connListener.connectionStarted();
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}
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public void start(String localDeviceName, Object videoRenderTarget, int drFlags, AudioRenderer audioRenderer, VideoDecoderRenderer videoDecoderRenderer)
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{
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this.drFlags = drFlags;
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this.audioRenderer = audioRenderer;
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this.videoRenderTarget = videoRenderTarget;
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this.context.videoDecoderRenderer = videoDecoderRenderer;
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new Thread(new Runnable() {
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public void run() {
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try {
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context.serverAddress = InetAddress.getByName(host);
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} catch (UnknownHostException e) {
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context.connListener.connectionTerminated(e);
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return;
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}
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establishConnection();
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}
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}).start();
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}
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public void sendMouseMove(final short deltaX, final short deltaY)
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{
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if (inputStream == null)
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return;
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inputStream.sendMouseMove(deltaX, deltaY);
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}
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public void sendMouseButtonDown(final byte mouseButton)
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{
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if (inputStream == null)
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return;
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inputStream.sendMouseButtonDown(mouseButton);
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}
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public void sendMouseButtonUp(final byte mouseButton)
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{
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if (inputStream == null)
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return;
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inputStream.sendMouseButtonUp(mouseButton);
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}
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public void sendControllerInput(final short controllerNumber,
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final short buttonFlags,
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final byte leftTrigger, final byte rightTrigger,
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final short leftStickX, final short leftStickY,
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final short rightStickX, final short rightStickY)
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{
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if (inputStream == null)
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return;
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inputStream.sendControllerInput(controllerNumber, buttonFlags, leftTrigger,
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rightTrigger, leftStickX, leftStickY,
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rightStickX, rightStickY);
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}
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public void sendControllerInput(final short buttonFlags,
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final byte leftTrigger, final byte rightTrigger,
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final short leftStickX, final short leftStickY,
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final short rightStickX, final short rightStickY)
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{
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if (inputStream == null)
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return;
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inputStream.sendControllerInput(buttonFlags, leftTrigger,
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rightTrigger, leftStickX, leftStickY,
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rightStickX, rightStickY);
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}
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public void sendKeyboardInput(final short keyMap, final byte keyDirection, final byte modifier) {
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if (inputStream == null)
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return;
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inputStream.sendKeyboardInput(keyMap, keyDirection, modifier);
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}
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public void sendMouseScroll(final byte scrollClicks) {
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if (inputStream == null)
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return;
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inputStream.sendMouseScroll(scrollClicks);
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}
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}
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