Android Open Source - GradleAndroid-App Decode Thread

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License

The source code is released under:

Apache License

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Java Source Code

/*
 * Copyright (C) 2008 ZXing authors/* ww w  .j av  a2  s  .  c om*/
 *
 * 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.android.app.function.qrcode.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.android.app.function.qrcode.activity.CaptureActivity;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.DecodeHintType;

/**
 * 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();
  }

}

Java Source Code List