Android Open Source - CamOMatic Utils

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License

The source code is released under:

GNU General Public License

Java Source Code

package edu.uic.cs440;
/*  w  ww.  j  a  va  2 s . co  m*/
import java.io.FileDescriptor;
import java.io.IOException;
import java.io.InputStream;

import android.net.LocalServerSocket;
import android.net.LocalSocket;
import android.net.LocalSocketAddress;

public class Utils {
  
  public static class Loopback {
    private LocalSocket receiver, sender;      
    private LocalServerSocket lss;    
    private final String localAddress;
    private final int bufferSize;
    
    public Loopback(String localAddress, int bufferSize) 
    {
      this.localAddress = localAddress;
      this.bufferSize = bufferSize;
    }
    

    boolean initLoopback()
    {    
      releaseLoopback();

      receiver = new LocalSocket();
      try {
        lss = new LocalServerSocket(localAddress);
        receiver.connect(new LocalSocketAddress(localAddress));
        receiver.setReceiveBufferSize(bufferSize);
        receiver.setSendBufferSize(bufferSize);
      } catch (IOException e) {
        return false;
      }  
      
      try {
        sender = lss.accept(); // blocks until a new connection arrives!
        sender.setReceiveBufferSize(bufferSize);
        sender.setSendBufferSize(bufferSize);
      } catch (IOException e) {
        return false;
      }

      return true;
    }

    void releaseLoopback()
    {
      try {
        if ( lss != null){
          lss.close();
        }
        if ( receiver != null){
          receiver.close();
        }
        if ( sender != null){
          sender.close();
        }
      } catch (IOException e) {}
      
      lss = null;
      sender = null;
      receiver = null;
    }
    
    FileDescriptor getTargetFileDescriptor()
    {
      return sender.getFileDescriptor();
    }

    public InputStream getReceiverInputStream() throws IOException {
      return receiver.getInputStream();
    }  
  }

  
  private static int MAX_READS = 4096;
  //The inputstream is parsed until we reach the start of the stream...
  public static boolean findStreamStart(InputStream is) throws IOException {
    int c, n = 0;
    int stat = 0;
    while((c = is.read()) != -1 && n++ < MAX_READS){
      switch(c){
      case 'm':
        stat = (stat == 0) ? 1 : 0;
        break;
      case 'd':
        stat = (stat == 1) ? 2 : 0;
        break;
      case 'a':
        stat = (stat == 2) ? 3 : 0;
        break;
      case 't':
        stat = (stat == 3) ? 4 : 0;
        break;
      default:
        stat = 0;
        break;
      }
      if(stat == 4)
        return true;
    }
    return false;
  }
}

Java Source Code List

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