Android Open Source - WhatsOnTV Tmdb

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Back to project page WhatsOnTV.
License

The source code is released under:
GNU General Public License
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Java Source Code

package net.oncaphillis.whatsontv;
//www. j  a v a 2 s  . c  o m
import java.io.InputStream;
import java.net.URL;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Iterator;
import java.util.PriorityQueue;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.view.View;
import android.widget.ProgressBar;
import info.movito.themoviedbapi.TmdbApi;

/**
 * A cash for Bitmap objects we retrieve from the Web. It holds 
 * references until a threshold value is reached. After that
 * Bitmaps get deleted. 
 * 
 * @author kloska
 *
 */
class BitmapHash {
  
  private class Node {
    public int count = 0;
    public Bitmap bm = null;
    public Node(int c,Bitmap b) {
      count = c;
      bm = b;
    }
  };
  
  private HashMap<Integer,HashMap<String,Node>> _bmHash =
      new HashMap<Integer,HashMap<String,Node>>();
  
  private class NodeComparator implements Comparator<Node> {
    @Override
    public int compare(Node lhs, Node rhs) {
      return lhs.count < rhs.count ? -1 : lhs.count > rhs.count ? 1 : 
        lhs.bm.getByteCount() < rhs.bm.getByteCount() ? -1 : lhs.bm.getByteCount() > rhs.bm.getByteCount() ? 1 : 0; 
    }
  };
  
  private NodeComparator comp = new NodeComparator();
  
  private PriorityQueue<Node> _queue = new PriorityQueue<Node>(10,comp);
  
  private int _size = 0;
  
  static final int MAX_SIZE=5000000; 
  
  void put(Bitmap bm,int size,String path) {

    
    HashMap<String,Node> hm0 = null;
    
    if((hm0 = _bmHash.get(size))==null) {
      _bmHash.put(size,hm0 = new HashMap<String,Node>());
    }
    
    while( (!_queue.isEmpty()) && (_size+bm.getByteCount() > MAX_SIZE) ) {
      Node n = _queue.remove();
      Iterator<Integer> a = _bmHash.keySet().iterator();

      while(a!=null && a.hasNext()) {
        int ai=a.next();
        Iterator<String> b = _bmHash.get(ai).keySet().iterator();
        while(b.hasNext()) {
          String bs = b.next();
          if(_bmHash.get(ai).get(bs) == n ) {
            _size -= _bmHash.get(ai).get(bs).bm.getByteCount();
            _bmHash.get(ai).remove(bs);
            a = null;
            break;
          }
        }
      }
    }
    
    Node n = null;
    
    hm0.put(path, n=new Node(0,bm));
    _queue.add(n);
    
    _size += bm.getByteCount();
  }
  
  Bitmap get(int size,String path) {
    
    HashMap<String,Node> hm = _bmHash.get(size);

    Node nd = null;
    
    if(hm != null) {
      if((nd=hm.get(path))!=null) {
        nd.count++;
        return nd.bm;
      }
    }
    return null;
  }
}

public class Tmdb {
  private static Tmdb   _one = null;
  private static String _key = null;
  private TmdbApi       _api = null;
  private BitmapHash    _hash= new BitmapHash();
  
  private Tmdb() {
    _key = TmdbKey.APIKEY;
  }
  
  public Bitmap loadPoster(int size,String path,Activity act,ProgressBar pb) {
    
    if(api()==null)
      return null;
    
    if(size>=api().getConfiguration().getPosterSizes().size())
      return null;
    
    Bitmap bm = null;
    
    synchronized(this) {
      if((bm=_hash.get(size,path))!=null)
        return bm;
    }
    
    synchronized(this) {
      try {
        if(act!=null && pb!=null) {
          final ProgressBar p = pb;
          act.runOnUiThread(new Runnable(){
            @Override
            public void run() {
              p.setVisibility(View.VISIBLE);
            }
          });
        }
        URL url = new URL(api().getConfiguration().getBaseUrl() + api().getConfiguration().getPosterSizes().get(size) + path);
        InputStream is = url.openConnection().getInputStream();
        bm = BitmapFactory.decodeStream(is);
        if(bm != null) {
          _hash.put(bm,size,path);
        }
      } catch(Exception ex) {
      }

      if(act!=null && pb!=null) {
        final ProgressBar p = pb;
        act.runOnUiThread(new Runnable(){
          @Override
          public void run() {
            p.setVisibility(View.INVISIBLE);
          }
        });
      }
    }
    
    return bm;
  }
  
  public Bitmap loadPoster(int size,String path) {
    return loadPoster(size,path,null,null);
  }

  /** returns the TmdbApi object we are working with. Might be null
   * if we currently don't have a connection.
   *  
   * @return
   */
  
  TmdbApi api() {
    try {
      if(_api == null) {
        _api = new TmdbApi(_key);
      }
    } catch(Exception ex) {
    }
    return _api;
  }
  
  static Tmdb get() {
    return _one == null ? _one=new Tmdb() : _one;  
  }
}
Java Source Code List
