BlinkenSimJava

BlinkenSimJava v.0.1 (2004-06-29)
Christian Heimke

Christian Heimke commited on 2011-07-15 09:12:42
Showing 10 changed files, with 373 additions and 0 deletions.

BlinkenSim.java
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+import java.lang.*;
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+import java.applet.*;
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+import java.awt.*;
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+
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+public class BlinkenSim extends Applet
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+{
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+  private DynMcufClient mcuf;
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+  private FrameProcessor frameProc;
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+
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+  public void init( )
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+  {
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+    String host = "";
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+    int port = 0;
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+
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+    host = getParameter( "host" );
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+    if( host.length( ) <= 0 )
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+      host = "proxy.blinkenlights.de";
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+
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+    port = Integer.parseInt( getParameter( "port" ) );
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+    if( port <= 0 || port > 65535 )
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+      port = 4242;
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+
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+    mcuf = new DynMcufClient( );
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+    frameProc = new FrameProcessor( this );
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+    mcuf.start( host, port, frameProc );
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+  }
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+
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+  public void stop( )
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+  {
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+    mcuf.stop( );
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+    mcuf = null;
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+    frameProc = null;
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+  }
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+
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+  public void paint( Graphics g )
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+  {
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+    int height, width, channels;
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+    byte[][][] data;
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+    Image img;
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+    Graphics gBuf;
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+    int y, x, c, val;
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+
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+    Frame frame = frameProc.getFrame( );
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+    height = frame.getHeight( );
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+    width = frame.getWidth( );
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+    channels = frame.getChannels( );
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+    data = frame.getData( );
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+
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+    img = createImage( width * 10 + 20, height * 20 + 50 );
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+    gBuf = img.getGraphics( );
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+
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+    gBuf.setColor( Color.black );
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+    gBuf.fillRect( 0, 0, width * 10 + 20, height * 20 + 50 );
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+
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+    gBuf.setColor( Color.white );
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+    gBuf.drawString( "BlinkenSimJava: " + height + "x" + width + "-" + channels, 20, 20 );
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+
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+    for( y = 0; y < height; y++ )
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+    {
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+      for( x = 0; x < width; x++ )
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+      {
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+        val = 0;
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+        for( c = 0; c < channels; c++ )
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+          val += data[y][x][c] & 0xFF;
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+        val /= channels;
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+        gBuf.setColor( new Color( val, val, val ) );
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+        gBuf.fillRect( x * 10 + 10, y * 20 + 30, 10, 20 );
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+      }
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+    }
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+
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+    g.drawImage( img, 0, 0, this );
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+
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+    //System.out.println( frame.toString( ) );
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+  }
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+
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+  public void update( Graphics g )
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+  {
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+    paint( g );
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+  }
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+}
DynMcufClient.java
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+import java.lang.*;
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+import java.applet.*;
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+import java.awt.*;
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+import java.io.*;
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+import java.net.*;
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+
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+public class DynMcufClient
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+{
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+  private DatagramSocket sock = null;
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+  private InetAddress host;
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+  private int port;
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+  private DynMcufClientSend send;
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+  private DynMcufClientRecv recv;
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+
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+  public void start( String hostname, int port, FrameReceiver receiver )
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+  {
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+    stop( );
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+    try
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+    {
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+      sock = new DatagramSocket( );
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+      host = InetAddress.getByName( hostname );
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+      this.port = port;
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+      send = new DynMcufClientSend( sock, host, port );
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+      recv = new DynMcufClientRecv( sock, host, port, receiver );
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+      recv.start( );
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+      send.start( );
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+    }
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+    catch( SocketException e )
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+    {
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+      sock = null;
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+      host = null;
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+      port = 0;
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+    }
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+    catch( UnknownHostException e )
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+    {
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+      sock = null;
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+      host = null;
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+      port = 0;
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+    }
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+  }
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+
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+  public void stop( )
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+  {
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+    sock = null;
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+    host = null;
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+    port = 0;
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+    if( send != null )
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+    {
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+      send.terminate( );
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+      send = null;
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+    }
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+    if( recv != null )
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+    {
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+      recv.terminate( );
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+      recv = null;
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+    }
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+  }
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+}
DynMcufClientRecv.java
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+import java.lang.*;
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+import java.applet.*;
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+import java.awt.*;
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+import java.io.*;
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+import java.net.*;
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+
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+public class DynMcufClientRecv extends Thread
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+{
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+  private DatagramSocket sock;
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+  private InetAddress host;
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+  private int port;
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+  private FrameReceiver receiver;
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+  private boolean termReq = false;
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+
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+  DynMcufClientRecv( DatagramSocket sock, InetAddress host, int port, FrameReceiver receiver )
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+  {
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+    this.sock = sock;
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+    this.host = host;
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+    this.port = port;
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+    this.receiver = receiver;
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+  }
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+
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+  public void run( )
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+  {
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+    while( ! termReq )
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+    {
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+      try
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+      {
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+        byte[] data = new byte[8192];
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+        DatagramPacket framePacket = new DatagramPacket( data, 8192 );
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+        sock.receive( framePacket );
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+        if( framePacket.getAddress( ).equals( host ) && framePacket.getPort( ) == port )
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+        {
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+          int length = framePacket.getLength( );
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+          data = framePacket.getData( );
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+          if( length >= 12 && data[0] == 0x23 && data[1] == 0x54
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+                           && data[2] == 0x26 && data[3] == 0x66 )
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+          {
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+            int height = (data[4] & 0xFF) << 8 | (data[5] & 0xFF);
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+            int width = (data[6] & 0xFF) << 8 | (data[7] & 0xFF);
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+            int channels = (data[8] & 0xFF) << 8 | (data[9] & 0xFF);
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+            int maxval = (data[10] & 0xFF) << 8 | (data[11] & 0xFF);
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+            if( height >= 1 && height <= 100 && width >= 1 && width <= 100
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+             && channels >= 1 && channels <= 3 && maxval >= 1 && maxval <= 255
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+             && length >= 12 + height * width * channels )
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+            {
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+              Frame frame = new Frame( height, width, channels );
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+              frame.setData( maxval, data, 12 );
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+              receiver.newFrame( frame );
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+            }
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+          }
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+        }
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+      }
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+      catch( IOException e ) { }
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+    }
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+  }
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+
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+  public void terminate( )
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+  {
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+    termReq = true;
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+    this.interrupt( );
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+  }
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+}
DynMcufClientSend.java
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+import java.lang.*;
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+import java.applet.*;
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+import java.awt.*;
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+import java.io.*;
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+import java.net.*;
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+
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+public class DynMcufClientSend extends Thread
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+{
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+  private DatagramSocket sock;
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+  private DatagramPacket request;
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+  private boolean termReq = false;
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+
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+  DynMcufClientSend( DatagramSocket sock, InetAddress host, int port )
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+  {
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+    this.sock = sock;
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+    byte[] data = { 0x42, 0x42, 0x42, 0x42, 0, 0, 0, 0, 0, 0, 0, 0 };
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+    request = new DatagramPacket( data, 12, host, port );
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+  }
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+
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+  public void run( )
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+  {
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+    while( ! termReq )
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+    {
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+      try
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+      {
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+        sock.send( request );
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+      }
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+      catch( IOException e ) { }
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+      try
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+      {
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+        sleep( 10000 );
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+      }
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+      catch( InterruptedException e ) { }
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+    }
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+  }
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+
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+  public void terminate( )
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+  {
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+    termReq = true;
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+    this.interrupt( );
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+  }
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+}
Frame.java
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+public class Frame
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+{
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+  private int height;
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+  private int width;
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+  private int channels;
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+  private byte[][][] data;
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+
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+  Frame( int height, int width, int channels )
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+  {
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+    this.height = height;
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+    this.width = width;
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+    this.channels = channels;
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+    data = new byte[height][width][channels];
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+  }
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+
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+  Frame( Frame frame )
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+  {
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+    height = frame.height;
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+    width = frame.width;
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+    channels = frame.channels;
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+    data = (byte[][][])frame.data.clone( );
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+  }
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+
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+  public void setData( int maxval, byte[] rawData, int startIndex )
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+  {
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+    int i, h, w, c;
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+    for( i = startIndex, h = 0; h < height; h++ )
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+      for( w = 0; w < width; w++ )
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+        for( c = 0; c < channels; c++, i++ )
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+          if( rawData[i] > maxval )
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+            data[h][w][c] = (byte)255;
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+          else
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+            data[h][w][c] = (byte)((rawData[i] & 0xFF) * 255 / maxval);
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+  }
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+
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+  public int getHeight( )
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+  {
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+    return height;
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+  }
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+
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+  public int getWidth( )
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+  {
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+    return width;
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+  }
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+
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+  public int getChannels( )
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+  {
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+    return channels;
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+  }
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+
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+  public byte[][][] getData( )
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+  {
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+    return data;
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+  }
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+
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+  public String toString( )
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+  {
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+    String str = "";
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+    int h, w, c, val;
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+    for( h = 0; h < height; h++ )
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+    {
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+      for( w = 0; w < width; w++ )
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+      {
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+        val = 0;
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+        for( val = 0, c = 0; c < channels; c++ )
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+          val += (data[h][w][c] & 0xFF);
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+        val /= channels * 32;
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+        str = str + " -+*%#&@".substring( val, val + 1);
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+      }
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+      str = str + "\n";
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+    }
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+    return str;
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+  }
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+}
FrameProcessor.java
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+import java.lang.*;
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+
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+public class FrameProcessor extends FrameReceiver
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+{
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+  private BlinkenSim blinkenSim;
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+  private Frame frame;
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+
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+  FrameProcessor( BlinkenSim blinkenSim )
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+  {
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+    this.blinkenSim = blinkenSim;
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+    frame = new Frame( 1, 1, 1 );
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+  }
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+
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+  public void newFrame( Frame frame )
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+  {
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+    this.frame = frame;
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+    blinkenSim.repaint( );
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+  }
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+
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+  public Frame getFrame( )
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+  {
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+    return new Frame( frame );
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+  }
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+}
FrameReceiver.java
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+public class FrameReceiver
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+{
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+  public void newFrame( Frame frame )
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+  {
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+  }
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+}
README
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+BlinkenLights stream viever in Java
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+done by 1stein@schuermans.info
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+very incomplete
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+no comments yet ;)
test.html
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+<html>
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+  <head>
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+    <title>test for BlinkenSimJava</title>
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+  </head>
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+  <body>
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+    <applet code="BlinkenSim.class" width="300" height="500">
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+      <param name="host" value="bl_proxy.1stein.no-ip.com">
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+      <param name="port" value="23231">
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+    </applet>
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+  </body>
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+</html>
test_lan.html
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+<html>
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+  <head>
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+    <title>test for BlinkenSimJava</title>
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+  </head>
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+  <body>
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+    <applet code="BlinkenSim.class" width="300" height="500">
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+      <param name="host" value="192.168.0.33">
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+      <param name="port" value="23231">
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+    </applet>
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+  </body>
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+</html>
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