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.google.zxing.BinaryBitmap;
  import com.google.zxing.DecodeHintType;
  import com.google.zxing.MultiFormatReader;
  import com.google.zxing.R;
  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) {
          int i = message.what;
          if (i == R.id.decode) {
              //Log.d(TAG, "Got decode message");
              decode((byte[]) message.obj, message.arg1, message.arg2);
          } else if (i == R.id.quit) {
              Looper.myLooper().quit();
          }
      }
  
      /**
       * 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();
          }
      }
  
  }
  