/*
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* Copyright (C) 2008 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.videogo.scan.main;
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import java.util.Collection;
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import java.util.EnumMap;
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import java.util.EnumSet;
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import java.util.Map;
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import java.util.concurrent.CountDownLatch;
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import android.content.SharedPreferences;
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import android.os.Handler;
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import android.os.Looper;
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import android.preference.PreferenceManager;
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import com.google.zxing.BarcodeFormat;
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import com.google.zxing.DecodeHintType;
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import com.google.zxing.ResultPointCallback;
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final class DecodeThread extends Thread {
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public static final String BARCODE_BITMAP = "barcode_bitmap";
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private final CaptureActivity activity;
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private final Map<DecodeHintType,Object> hints;
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private Handler handler;
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private final CountDownLatch handlerInitLatch;
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DecodeThread(CaptureActivity activity,
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Collection<BarcodeFormat> decodeFormats,
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String characterSet,
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ResultPointCallback resultPointCallback) {
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this.activity = activity;
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handlerInitLatch = new CountDownLatch(1);
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hints = new EnumMap<DecodeHintType,Object>(DecodeHintType.class);
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// The prefs can't change while the thread is running, so pick them up once here.
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if (decodeFormats == null || decodeFormats.isEmpty()) {
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SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
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decodeFormats = EnumSet.noneOf(BarcodeFormat.class);
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if (prefs.getBoolean(PreferencesActivity.KEY_DECODE_1D, false)) {
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decodeFormats.addAll(DecodeFormatManager.ONE_D_FORMATS);
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}
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if (prefs.getBoolean(PreferencesActivity.KEY_DECODE_QR, false)) {
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decodeFormats.addAll(DecodeFormatManager.QR_CODE_FORMATS);
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}
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if (prefs.getBoolean(PreferencesActivity.KEY_DECODE_DATA_MATRIX, false)) {
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decodeFormats.addAll(DecodeFormatManager.DATA_MATRIX_FORMATS);
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}
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}
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hints.put(DecodeHintType.POSSIBLE_FORMATS, decodeFormats);
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if (characterSet != null) {
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hints.put(DecodeHintType.CHARACTER_SET, characterSet);
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}
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hints.put(DecodeHintType.NEED_RESULT_POINT_CALLBACK, resultPointCallback);
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}
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Handler getHandler() {
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try {
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handlerInitLatch.await();
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} catch (InterruptedException ie) {
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// continue?
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}
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return handler;
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}
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@Override
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public void run() {
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Looper.prepare();
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handler = new DecodeHandler(activity, hints);
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handlerInitLatch.countDown();
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Looper.loop();
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}
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}
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