content: /*
   * Copyright (C) 2010 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.google.zxing.decoding;
  
  import android.os.Bundle;
  import android.os.Handler;
  import android.os.Looper;
  import android.os.Message;
  import android.util.Log;
  
  import com.dommy.qrcode.R;
  import com.google.zxing.BinaryBitmap;
  import com.google.zxing.DecodeHintType;
  import com.google.zxing.MultiFormatReader;
  import com.google.zxing.ReaderException;
  import com.google.zxing.Result;
  import com.google.zxing.activity.CaptureActivity;
  import com.google.zxing.camera.CameraManager;
  import com.google.zxing.camera.PlanarYUVLuminanceSource;
  import com.google.zxing.common.HybridBinarizer;
  
  import java.util.Hashtable;
  
  
  final class DecodeHandler extends Handler {
  
    private static final String TAG = DecodeHandler.class.getSimpleName();
  
    private final CaptureActivity activity;
    private final MultiFormatReader multiFormatReader;
  
    DecodeHandler(CaptureActivity activity, Hashtable<DecodeHintType, Object> hints) {
      multiFormatReader = new MultiFormatReader();
      multiFormatReader.setHints(hints);
      this.activity = activity;
    }
  
    @Override
    public void handleMessage(Message message) {
      switch (message.what) {
        case R.id.decode:
          //Log.d(TAG, "Got decode message");
          decode((byte[]) message.obj, message.arg1, message.arg2);
          break;
        case R.id.quit:
          Looper.myLooper().quit();
          break;
      }
    }
  
    /**
     * Decode the data within the viewfinder rectangle, and time how long it took. For efficiency,
     * reuse the same reader objects from one decode to the next.
     *
     * @param data   The YUV preview frame.
     * @param width  The width of the preview frame.
     * @param height The height of the preview frame.
     */
    private void decode(byte[] data, int width, int height) {
      long start = System.currentTimeMillis();
      Result rawResult = null;
      
      //modify here
      byte[] rotatedData = new byte[data.length];
      for (int y = 0; y < height; y++) {
          for (int x = 0; x < width; x++)
              rotatedData[x * height + height - y - 1] = data[x + y * width];
      }
      int tmp = width; // Here we are swapping, that's the difference to #11
      width = height;
      height = tmp;
      
      PlanarYUVLuminanceSource source = CameraManager.get().buildLuminanceSource(rotatedData, width, height);
      BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
      try {
        rawResult = multiFormatReader.decodeWithState(bitmap);
      } catch (ReaderException re) {
        // continue
      } finally {
        multiFormatReader.reset();
      }
  
      if (rawResult != null) {
        long end = System.currentTimeMillis();
        Log.d(TAG, "Found barcode (" + (end - start) + " ms):\n" + rawResult.toString());
        Message message = Message.obtain(activity.getHandler(), R.id.decode_succeeded, rawResult);
        Bundle bundle = new Bundle();
        bundle.putParcelable(DecodeThread.BARCODE_BITMAP, source.renderCroppedGreyscaleBitmap());
        message.setData(bundle);
        //Log.d(TAG, "Sending decode succeeded message...");
        message.sendToTarget();
      } else {
        Message message = Message.obtain(activity.getHandler(), R.id.decode_failed);
        message.sendToTarget();
      }
    }
  
  }
  