mirror of https://github.com/status-im/qzxing.git
72 lines
2.2 KiB
C++
72 lines
2.2 KiB
C++
/*
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* Copyright 2011 ZXing authors All rights reserved.
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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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#include <zxing/multi/ByQuadrantReader.h>
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#include <zxing/ReaderException.h>
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namespace zxing {
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namespace multi {
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ByQuadrantReader::ByQuadrantReader(Reader& delegate) : delegate_(delegate) {}
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ByQuadrantReader::~ByQuadrantReader(){}
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Ref<Result> ByQuadrantReader::decode(Ref<BinaryBitmap> image){
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return decode(image, DecodeHints::DEFAULT_HINT);
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}
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Ref<Result> ByQuadrantReader::decode(Ref<BinaryBitmap> image, DecodeHints hints){
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int width = image->getWidth();
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int height = image->getHeight();
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int halfWidth = width / 2;
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int halfHeight = height / 2;
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Ref<BinaryBitmap> topLeft = image->crop(0, 0, halfWidth, halfHeight);
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try {
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return delegate_.decode(topLeft, hints);
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} catch (ReaderException& re) {
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// continue
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}
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Ref<BinaryBitmap> topRight = image->crop(halfWidth, 0, halfWidth, halfHeight);
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try {
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return delegate_.decode(topRight, hints);
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} catch (ReaderException& re) {
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// continue
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}
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Ref<BinaryBitmap> bottomLeft = image->crop(0, halfHeight, halfWidth, halfHeight);
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try {
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return delegate_.decode(bottomLeft, hints);
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} catch (ReaderException& re) {
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// continue
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}
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Ref<BinaryBitmap> bottomRight = image->crop(halfWidth, halfHeight, halfWidth, halfHeight);
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try {
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return delegate_.decode(bottomRight, hints);
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} catch (ReaderException& re) {
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// continue
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}
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int quarterWidth = halfWidth / 2;
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int quarterHeight = halfHeight / 2;
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Ref<BinaryBitmap> center = image->crop(quarterWidth, quarterHeight, halfWidth, halfHeight);
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return delegate_.decode(center, hints);
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}
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} // End zxing::multi namespace
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} // End zxing namespace
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