DecodeHandler.java
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/*
* 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.yzq.zxinglibrary.decode;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.PlanarYUVLuminanceSource;
import com.google.zxing.ReaderException;
import com.google.zxing.Result;
import com.google.zxing.common.HybridBinarizer;
import com.yzq.zxinglibrary.android.CaptureActivity;
import com.yzq.zxinglibrary.common.Constant;
import java.util.Map;
public final class DecodeHandler extends Handler {
private static final String TAG = DecodeHandler.class.getSimpleName();
private final CaptureActivity activity;
private final MultiFormatReader multiFormatReader;
private boolean running = true;
DecodeHandler(CaptureActivity activity, Map<DecodeHintType, Object> hints) {
multiFormatReader = new MultiFormatReader();
multiFormatReader.setHints(hints);
this.activity = activity;
}
@Override
public void handleMessage(Message message) {
if (!running) {
return;
}
switch (message.what) {
case Constant.DECODE:
decode((byte[]) message.obj, message.arg1, message.arg2);
break;
case Constant.QUIT:
running = false;
Looper.myLooper().quit();
break;
}
}
/**
*
* 解码
*/
private void decode(byte[] data, int width, int height) {
Result rawResult = null;
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;
data = rotatedData;
PlanarYUVLuminanceSource source = activity.getCameraManager()
.buildLuminanceSource(data, width, height);
if (source != null) {
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
try {
rawResult = multiFormatReader.decodeWithState(bitmap);
} catch (ReaderException re) {
//Log.i("解码异常",re.toString());
} finally {
multiFormatReader.reset();
}
}
Handler handler = activity.getHandler();
if (rawResult != null) {
if (handler != null) {
Message message = Message.obtain(handler,
Constant.DECODE_SUCCEEDED, rawResult);
message.sendToTarget();
}
} else {
if (handler != null) {
Message message = Message.obtain(handler, Constant.DECODE_FAILED);
message.sendToTarget();
}
}
}
}