com.google.zxing.oned.UPCEANExtensionSupport Maven / Gradle / Ivy
/*
* 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.oned;
import com.google.zxing.NotFoundException;
import com.google.zxing.ReaderException;
import com.google.zxing.Result;
import com.google.zxing.common.BitArray;
final class UPCEANExtensionSupport {
private static final int[] EXTENSION_START_PATTERN = {1,1,2};
private final UPCEANExtension2Support twoSupport = new UPCEANExtension2Support();
private final UPCEANExtension5Support fiveSupport = new UPCEANExtension5Support();
Result decodeRow(int rowNumber, BitArray row, int rowOffset) throws NotFoundException {
int[] extensionStartRange = UPCEANReader.findGuardPattern(row, rowOffset, false, EXTENSION_START_PATTERN);
try {
return fiveSupport.decodeRow(rowNumber, row, extensionStartRange);
} catch (ReaderException ignored) {
return twoSupport.decodeRow(rowNumber, row, extensionStartRange);
}
}
}