some samples

retina-server/.classpath

@@ -3,8 +3,6 @@
 	<classpathentry kind="src" path="src/main/java"/>
 	<classpathentry kind="src" path="src/test/java"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
-	<classpathentry kind="con" path="org.apache.ivyde.eclipse.cpcontainer.IVYDE_CONTAINER/?ivyXmlPath=retina-server%2Fconf%2Fproject%2Fivy.xml&amp;confs=*&amp;ivySettingsPath=%24%7Bworkspace_loc%3Aretina-server%2Fretina-server%2Fconf%2Fproject%2Fivysettings.xml%7D&amp;loadSettingsOnDemand=false&amp;propertyFiles="/>
-	<classpathentry kind="con" path="org.apache.ivyde.eclipse.cpcontainer.IVYDE_CONTAINER/?ivyXmlPath=retina-server%2Fivy.xml&amp;confs=*"/>
-	<classpathentry kind="con" path="org.apache.ivyde.eclipse.cpcontainer.IVYDE_CONTAINER/?ivyXmlPath=ivy.xml&amp;confs=*&amp;ivySettingsPath=%24%7Bworkspace_loc%3Aretina-server%2Fivysettings.xml%7D&amp;loadSettingsOnDemand=false&amp;propertyFiles="/>
+	<classpathentry kind="con" path="org.apache.ivyde.eclipse.cpcontainer.IVYDE_CONTAINER/?ivyXmlPath=ivy.xml&amp;confs=*"/>
 	<classpathentry kind="output" path="tmp/build"/>
 </classpath>

retina-server/conf/SamplesConfig.xml

@@ -0,0 +1,30 @@
+<OpenNI>
+	<Licenses>
+		<License vendor="PrimeSense" key="0KOIk2JeIBYClPWVnMoRKn5cdY4="/>
+	</Licenses>
+	<Log writeToConsole="true" writeToFile="false">
+		<!-- 0 - Verbose, 1 - Info, 2 - Warning, 3 - Error (default) -->
+		<LogLevel value="3"/>
+		<Masks>
+			<Mask name="ALL" on="true"/>
+		</Masks>
+		<Dumps>
+		</Dumps>
+	</Log>
+	<ProductionNodes>
+		<Node type="Depth" name="Depth1">
+			<Configuration>
+        <MapOutputMode xRes="640" yRes="480" FPS="30"/>
+				<Mirror on="true"/>
+			</Configuration>
+		</Node>
+<!--
+		<Node type="Image" name="Image1" stopOnError="false">
+			<Configuration>
+        <MapOutputMode xRes="640" yRes="480" FPS="30"/>
+				<Mirror on="true"/>
+			</Configuration>
+		</Node>
+-->
+	</ProductionNodes>
+</OpenNI>

retina-server/src/main/java/com/imolatech/retina/RetinaServer.java

@@ -5,7 +5,8 @@
 package com.imolatech.retina;
 
 /**
- *
+ * The main application to start a websocket server.
+ * 
  * @author Wenhu
  */
 public class RetinaServer {
@@ -14,7 +15,7 @@ public class RetinaServer {
      * @param args the command line arguments
      */
     public static void main(String[] args) {
-        JWebSocketClient client = new JWebSocketClient();
+        WebSocketServer client = new WebSocketServer();
         client.init();
         for (int i=0; i<10; i++) {
             sleep();

retina-server/src/main/java/com/imolatech/retina/JWebSocketClient.java → retina-server/src/main/java/com/imolatech/retina/WebSocketServer.java

@@ -1,13 +1,10 @@
 /*
- * To change this template, choose Tools | Templates
- * and open the template in the editor.
+ * Init a WebSocketServer and also response for initialize a kinect module.
  */
 package com.imolatech.retina;
 
-import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
-import java.util.List;
 import java.util.Map;
 
 import org.jwebsocket.api.WebSocketConnector;
@@ -24,7 +21,7 @@
  *
  * @author Wenhu
  */
-public class JWebSocketClient implements WebSocketServerTokenListener {
+public class WebSocketServer implements WebSocketServerTokenListener {
 
     private TokenServer tokenServer;
 

retina-server/src/main/java/com/imolatech/retina/kinect/sample/OpenNIViewer.java

@@ -0,0 +1,45 @@
+package com.imolatech.retina.kinect.sample;
+
+/* Different OpenNI viewers are implemented in different 
+ versions of the ViewerPanel class.
+
+ Usage:
+ > java OpenNIViewer
+ */
+
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+
+public class OpenNIViewer extends JFrame {
+	private static final long serialVersionUID = 1L;
+	private ViewerPanelV3 viewerPanel;
+
+	public OpenNIViewer() {
+		super("OpenNI Viewer Example");
+
+		Container c = getContentPane();
+		c.setLayout(new BorderLayout());
+
+		viewerPanel = new ViewerPanelV3();
+		c.add(viewerPanel, BorderLayout.CENTER);
+
+		addWindowListener(new WindowAdapter() {
+			public void windowClosing(WindowEvent e) {
+				viewerPanel.closeDown(); // stop showing images
+			}
+		});
+
+		pack();
+		setResizable(false);
+		setLocationRelativeTo(null);
+		setVisible(true);
+	} // end of OpenNIViewer()
+
+	// -------------------------------------------------------
+
+	public static void main(String args[]) {
+		new OpenNIViewer();
+	}
+
+} // end of OpenNIViewer class

retina-server/src/main/java/com/imolatech/retina/kinect/sample/ViewerPanel.java

@@ -0,0 +1,224 @@
+package com.imolatech.retina.kinect.sample;
+
+/* Based on OpenNI's SimpleViewer example
+ Initialize OpenNI *without* using an XML file;
+ Display a grayscale depth map (darker means further away, although black
+ means "too close" for a depth value to be calculated).
+ */
+
+import java.awt.*;
+import javax.swing.*;
+import java.awt.image.*;
+import java.text.DecimalFormat;
+
+import org.OpenNI.*;
+
+import java.nio.ShortBuffer;
+
+public class ViewerPanel extends JPanel implements Runnable {
+
+	private static final long serialVersionUID = 1L;
+
+	private static final int MAX_DEPTH_SIZE = 10000;
+
+	// image vars
+	private byte[] imgbytes;
+	private BufferedImage image = null; // for displaying the depth image
+	private int imWidth, imHeight;
+	private float histogram[]; // for the depth values
+	private int maxDepth = 0; // largest depth value
+
+	private volatile boolean isRunning;
+
+	// used for the average ms processing information
+	private int imageCount = 0;
+	private long totalTime = 0;
+	private DecimalFormat df;
+	private Font msgFont;
+
+	// OpenNI
+	private Context context;
+	private DepthMetaData depthMD;
+
+	public ViewerPanel() {
+		setBackground(Color.WHITE);
+
+		df = new DecimalFormat("0.#"); // 1 dp
+		msgFont = new Font("SansSerif", Font.BOLD, 18);
+
+		configOpenNI();
+
+		histogram = new float[MAX_DEPTH_SIZE];
+
+		imWidth = depthMD.getFullXRes();
+		imHeight = depthMD.getFullYRes();
+		System.out.println("Image dimensions (" + imWidth + ", " + imHeight
+				+ ")");
+
+		// create empty image object of correct size and type
+		imgbytes = new byte[imWidth * imHeight];
+		image = new BufferedImage(imWidth, imHeight,
+				BufferedImage.TYPE_BYTE_GRAY);
+
+		new Thread(this).start(); // start updating the panel's image
+	} // end of ViewerPanel()
+
+	private void configOpenNI()
+	// create context and depth generator
+	{
+		try {
+			context = new Context();
+
+			// add the NITE Licence
+			License licence = new License("PrimeSense",
+					"0KOIk2JeIBYClPWVnMoRKn5cdY4="); // vendor, key
+			context.addLicense(licence);
+
+			DepthGenerator depthGen = DepthGenerator.create(context);
+			MapOutputMode mapMode = new MapOutputMode(640, 480, 30); // xRes,
+																		// yRes,
+																		// FPS
+			depthGen.setMapOutputMode(mapMode);
+
+			// set Mirror mode for all
+			context.setGlobalMirror(true);
+
+			context.startGeneratingAll();
+			System.out.println("Started context generating...");
+
+			depthMD = depthGen.getMetaData();
+			// use depth metadata to access depth info (avoids bug with
+			// DepthGenerator)
+		} catch (Exception e) {
+			System.out.println(e);
+			System.exit(1);
+		}
+	} // end of configOpenNI()
+
+	public Dimension getPreferredSize() {
+		return new Dimension(imWidth, imHeight);
+	}
+
+	public void run()
+	/*
+	 * update and display the depth image whenever the context is updated.
+	 */
+	{
+		isRunning = true;
+		while (isRunning) {
+			try {
+				context.waitAnyUpdateAll();
+			} catch (StatusException e) {
+				System.out.println(e);
+				System.exit(1);
+			}
+			long startTime = System.currentTimeMillis();
+			updateDepthImage();
+			imageCount++;
+			totalTime += (System.currentTimeMillis() - startTime);
+			repaint();
+		}
+
+		// close down
+		try {
+			context.stopGeneratingAll();
+		} catch (StatusException e) {
+		}
+		context.release();
+		System.exit(1);
+	} // end of run()
+
+	public void closeDown() {
+		isRunning = false;
+	}
+
+	private void updateDepthImage()
+	/*
+	 * build a new histogram of 8-bit depth values, and convert it to image
+	 * pixels (as bytes)
+	 */
+	{
+		ShortBuffer depthBuf = depthMD.getData().createShortBuffer();
+		calcHistogram(depthBuf);
+		depthBuf.rewind();
+
+		while (depthBuf.remaining() > 0) {
+			int pos = depthBuf.position();
+			short depth = depthBuf.get();
+			imgbytes[pos] = (byte) histogram[depth];
+		}
+	} // end of updateDepthImage()
+
+	private void calcHistogram(ShortBuffer depthBuf) {
+		// reset histogram[]
+		for (int i = 0; i <= maxDepth; i++)
+			histogram[i] = 0;
+
+		// record number of different depths in histogram[]
+		int numPoints = 0;
+		maxDepth = 0;
+		while (depthBuf.remaining() > 0) {
+			short depthVal = depthBuf.get();
+			if (depthVal > maxDepth)
+				maxDepth = depthVal;
+			if ((depthVal != 0) && (depthVal < MAX_DEPTH_SIZE)) { // skip
+																	// histogram[0]
+				histogram[depthVal]++;
+				numPoints++;
+			}
+		}
+		// System.out.println("No. of numPoints: " + numPoints);
+		// System.out.println("Maximum depth: " + maxDepth);
+
+		// convert into a cummulative depth count (skipping histogram[0])
+		for (int i = 1; i <= maxDepth; i++)
+			histogram[i] += histogram[i - 1];
+
+		/*
+		 * convert cummulative depth into 8-bit range (0-255), which will later
+		 * become grayscales - darker means further away, although black means
+		 * "too close" for a depth value to be calculated).
+		 */
+		if (numPoints > 0) {
+			for (int i = 1; i <= maxDepth; i++)
+				// skipping histogram[0]
+				histogram[i] = (int) (256 * (1.0f - (histogram[i] / (float) numPoints)));
+		}
+	} // end of calcHistogram()
+
+	public void paintComponent(Graphics g)
+	// Draw the depth image and statistics info
+	{
+		super.paintComponent(g);
+		Graphics2D g2 = (Graphics2D) g;
+
+		// convert image pixel array into an image
+		DataBufferByte dataBuffer = new DataBufferByte(imgbytes, imWidth
+				* imHeight);
+		Raster raster = Raster.createPackedRaster(dataBuffer, imWidth,
+				imHeight, 8, null);
+		image.setData(raster);
+		if (image != null)
+			g2.drawImage(image, 0, 0, this);
+
+		writeStats(g2);
+	} // end of paintComponent()
+
+	private void writeStats(Graphics2D g2)
+	/*
+	 * write statistics in bottom-left corner, or "Loading" at start time
+	 */
+	{
+		g2.setColor(Color.BLUE);
+		g2.setFont(msgFont);
+		int panelHeight = getHeight();
+		if (imageCount > 0) {
+			double avgGrabTime = (double) totalTime / imageCount;
+			g2.drawString("Pic " + imageCount + "  " + df.format(avgGrabTime)
+					+ " ms", 5, panelHeight - 10); // bottom left
+		} else
+			// no image yet
+			g2.drawString("Loading...", 5, panelHeight - 10);
+	} // end of writeStats()
+
+} // end of ViewerPanel class