/*
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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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package com.tejia.lijin.app.util.zxing.decode;
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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 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.PlanarYUVLuminanceSource;
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import com.google.zxing.ReaderException;
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import com.google.zxing.Result;
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import com.google.zxing.common.HybridBinarizer;
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import com.tejia.lijin.app.ui.recommend.CaptureActivity;
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import com.tejia.lijin.app.util.zxing.common.Constant;
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import java.util.Map;
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public 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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private boolean running = true;
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DecodeHandler(CaptureActivity activity, Map<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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if (!running) {
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return;
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}
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switch (message.what) {
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case Constant.DECODE:
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decode((byte[]) message.obj, message.arg1, message.arg2);
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break;
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case Constant.QUIT:
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running = false;
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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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*
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* 解码
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*/
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private void decode(byte[] data, int width, int height) {
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Result rawResult = null;
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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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data = rotatedData;
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PlanarYUVLuminanceSource source = activity.getCameraManager()
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.buildLuminanceSource(data, width, height);
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if (source != null) {
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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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//Log.i("解码异常",re.toString());
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} finally {
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multiFormatReader.reset();
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}
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}
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Handler handler = activity.getHandler();
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if (rawResult != null) {
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if (handler != null) {
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Message message = Message.obtain(handler,
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Constant.DECODE_SUCCEEDED, rawResult);
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message.sendToTarget();
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}
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} else {
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if (handler != null) {
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Message message = Message.obtain(handler, Constant.DECODE_FAILED);
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message.sendToTarget();
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}
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}
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}
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}
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