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117 lines
3.7 KiB
117 lines
3.7 KiB
package com.geogle.zxing.decoding;/*
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* Copyright (C) 2010 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import android.os.Bundle;
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import android.os.Handler;
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import android.os.Looper;
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import android.os.Message;
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import android.util.Log;
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import com.geogle.zxing.camera.PlanarYUVLuminanceSource;
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import com.google.zxing.BinaryBitmap;
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import com.google.zxing.DecodeHintType;
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import com.google.zxing.MultiFormatReader;
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import com.google.zxing.ReaderException;
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import com.google.zxing.Result;
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import com.geogle.zxing.camera.CameraManager;
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import com.google.zxing.common.HybridBinarizer;
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import java.util.Hashtable;
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import com.geogle.zxing.activity.CaptureActivity;
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import edu.hzuapps.androidlabs.R;
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final class DecodeHandler extends Handler {
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private static final String TAG = DecodeHandler.class.getSimpleName();
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private final CaptureActivity activity;
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private final MultiFormatReader multiFormatReader;
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DecodeHandler(CaptureActivity activity, Hashtable<DecodeHintType, Object> hints) {
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multiFormatReader = new MultiFormatReader();
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multiFormatReader.setHints(hints);
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this.activity = activity;
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}
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@Override
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public void handleMessage(Message message) {
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switch (message.what) {
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case R.id.decode:
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//Log.d(TAG, "Got decode message");
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decode((byte[]) message.obj, message.arg1, message.arg2);
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break;
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case R.id.quit:
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Looper.myLooper().quit();
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break;
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}
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}
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/**
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* Decode the data within the viewfinder rectangle, and time how long it took. For efficiency,
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* reuse the same reader objects from one decode to the next.
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*
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* @param data The YUV preview frame.
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* @param width The width of the preview frame.
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* @param height The height of the preview frame.
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*/
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private void decode(byte[] data, int width, int height) {
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long start = System.currentTimeMillis();
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Result rawResult = null;
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//modify here
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byte[] rotatedData = new byte[data.length];
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for (int y = 0; y < height; y++) {
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for (int x = 0; x < width; x++)
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rotatedData[x * height + height - y - 1] = data[x + y * width];
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}
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int tmp = width; // Here we are swapping, that's the difference to #11
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width = height;
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height = tmp;
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PlanarYUVLuminanceSource source = CameraManager.get().buildLuminanceSource(rotatedData, width, height);
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BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
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try {
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rawResult = multiFormatReader.decodeWithState(bitmap);
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} catch (ReaderException re) {
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// continue
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} finally {
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multiFormatReader.reset();
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}
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if (rawResult != null) {
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long end = System.currentTimeMillis();
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Log.d(TAG, "Found barcode (" + (end - start) + " ms):\n" + rawResult.toString());
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Message message = Message.obtain(activity.getHandler(), R.id.decode_succeeded, rawResult);
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Bundle bundle = new Bundle();
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bundle.putParcelable(DecodeThread.BARCODE_BITMAP, source.renderCroppedGreyscaleBitmap());
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message.setData(bundle);
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//Log.d(TAG, "Sending decode succeeded message...");
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message.sendToTarget();
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} else {
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Message message = Message.obtain(activity.getHandler(), R.id.decode_failed);
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message.sendToTarget();
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}
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}
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}
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