content: /*
   * Copyright (C) 2008 ZXing authors
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.handsome.didi.zxing.decode;
  
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.EnumMap;
  import java.util.EnumSet;
  import java.util.Map;
  import java.util.concurrent.CountDownLatch;
  
  import android.os.Handler;
  import android.os.Looper;
  
  import com.google.zxing.BarcodeFormat;
  import com.google.zxing.DecodeHintType;
  import com.handsome.didi.zxing.activity.CaptureActivity;
  
  /**
   * This thread does all the heavy lifting of decoding the images.
   * 
   * @author dswitkin@google.com (Daniel Switkin)
   */
  public class DecodeThread extends Thread {
  
  	public static final String BARCODE_BITMAP = "barcode_bitmap";
  
  	public static final int BARCODE_MODE = 0X100;
  	public static final int QRCODE_MODE = 0X200;
  	public static final int ALL_MODE = 0X300;
  
  	private final CaptureActivity activity;
  	private final Map<DecodeHintType, Object> hints;
  	private Handler handler;
  	private final CountDownLatch handlerInitLatch;
  
  	public DecodeThread(CaptureActivity activity, int decodeMode) {
  
  		this.activity = activity;
  		handlerInitLatch = new CountDownLatch(1);
  
  		hints = new EnumMap<DecodeHintType, Object>(DecodeHintType.class);
  
  		Collection<BarcodeFormat> decodeFormats = new ArrayList<BarcodeFormat>();
  		decodeFormats.addAll(EnumSet.of(BarcodeFormat.AZTEC));
  		decodeFormats.addAll(EnumSet.of(BarcodeFormat.PDF_417));
  
  		switch (decodeMode) {
  		case BARCODE_MODE:
  			decodeFormats.addAll(DecodeFormatManager.getBarCodeFormats());
  			break;
  
  		case QRCODE_MODE:
  			decodeFormats.addAll(DecodeFormatManager.getQrCodeFormats());
  			break;
  
  		case ALL_MODE:
  			decodeFormats.addAll(DecodeFormatManager.getBarCodeFormats());
  			decodeFormats.addAll(DecodeFormatManager.getQrCodeFormats());
  			break;
  
  		default:
  			break;
  		}
  
  		hints.put(DecodeHintType.POSSIBLE_FORMATS, decodeFormats);
  	}
  
  	public Handler getHandler() {
  		try {
  			handlerInitLatch.await();
  		} catch (InterruptedException ie) {
  			// continue?
  		}
  		return handler;
  	}
  
  	@Override
  	public void run() {
  		Looper.prepare();
  		handler = new DecodeHandler(activity, hints);
  		handlerInitLatch.countDown();
  		Looper.loop();
  	}
  
  }
  