Android Open Source - swazam Finger Print Creator

From Project

Back to project page swazam.

License

The source code is released under:

MIT License

If you think the Android project swazam listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

package at.saws2013.szazam.fingerprint.impl;
//www .ja  v  a  2  s .com
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

import ac.at.tuwien.infosys.swa.audio.Fingerprint;
import ac.at.tuwien.infosys.swa.audio.FingerprintSystem;
import android.content.Context;
import android.content.ContextWrapper;
import android.util.Log;
import at.saws2013.szazam.fingerprint.IFingerPrintSystem;

/**
 * Class to create a fingerprint either using an FileInputStream
 * or the path to an audio file
 * 
 * @author Ren?
 *
 */
public class FingerPrintCreator extends ContextWrapper implements IFingerPrintSystem{

  private static final String LOG_TAG = "FingerPrintCreator";
  private static final int SAMPLING_RATE = 8000;
  
  private FingerprintSystem fingerPrintSystem;
  private boolean isCancelled;
  
  public void cancel(){
    this.isCancelled = true;
  }

  public FingerPrintCreator(Context base) {
    super(base);
    fingerPrintSystem = new FingerprintSystem(SAMPLING_RATE);
  }
  
  private ByteArrayOutputStream readAudioTrack(FileInputStream fileInputStream) throws IOException{
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    final byte[] buffer = new byte[1024];
        int read = fileInputStream.read(buffer);
        while (-1 < read && !isCancelled) {
            out.write(buffer, 0, read);
            read = fileInputStream.read(buffer);
        }
        try {
            fileInputStream.close();
    } catch (Exception e) {
    }
    return out;
  }

  @Override
  public Fingerprint createFingerprintFromFilePath(String filePath){
    this.isCancelled = false;
    Fingerprint fingerprint = null;
    FileInputStream input;
    try {
      File audioTrack = new File(filePath);
      input = new FileInputStream(audioTrack);
      final ByteArrayOutputStream out = readAudioTrack(input);          
          input.close();
          try{
            fingerprint = fingerPrintSystem.fingerprint(out.toByteArray());
          } catch(IllegalArgumentException e){
            Log.d(LOG_TAG, e.getMessage());
          } catch (OutOfMemoryError e) {
            Log.d(LOG_TAG, e.getMessage());
      }
    } catch (FileNotFoundException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
    
    return fingerprint;
  }

}

Java Source Code List