// -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*- /* * Copyright 2011 ZXing authors All rights reserved. * * 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. */ #include <zxing/multi/GenericMultipleBarcodeReader.h> #include <zxing/ReaderException.h> #include <zxing/ResultPoint.h> using std::vector; using zxing::Ref; using zxing::Result; using zxing::multi::GenericMultipleBarcodeReader; // VC++ using zxing::Reader; using zxing::BinaryBitmap; using zxing::DecodeHints; GenericMultipleBarcodeReader::GenericMultipleBarcodeReader(Reader& delegate) : delegate_(delegate) {} GenericMultipleBarcodeReader::~GenericMultipleBarcodeReader(){} vector<Ref<Result> > GenericMultipleBarcodeReader::decodeMultiple(Ref<BinaryBitmap> image, DecodeHints hints) { vector<Ref<Result> > results; doDecodeMultiple(image, hints, results, 0, 0, 0); if (results.empty()){ throw ReaderException("No code detected"); } return results; } void GenericMultipleBarcodeReader::doDecodeMultiple(Ref<BinaryBitmap> image, DecodeHints hints, vector<Ref<Result> >& results, int xOffset, int yOffset, int currentDepth) { if (currentDepth > MAX_DEPTH) { return; } Ref<Result> result; try { result = delegate_.decode(image, hints); } catch (ReaderException const& ignored) { (void)ignored; return; } bool alreadyFound = false; for (unsigned int i = 0; i < results.size(); i++) { Ref<Result> existingResult = results[i]; if (existingResult->getText()->getText() == result->getText()->getText()) { alreadyFound = true; break; } } if (!alreadyFound) { results.push_back(translateResultPoints(result, xOffset, yOffset)); } ArrayRef< Ref<ResultPoint> > resultPoints = result->getResultPoints(); if (resultPoints->empty()) { return; } int width = image->getWidth(); int height = image->getHeight(); float minX = float(width); float minY = float(height); float maxX = 0.0f; float maxY = 0.0f; for (int i = 0; i < resultPoints->size(); i++) { Ref<ResultPoint> point = resultPoints[i]; float x = point->getX(); float y = point->getY(); if (x < minX) { minX = x; } if (y < minY) { minY = y; } if (x > maxX) { maxX = x; } if (y > maxY) { maxY = y; } } // Decode left of barcode if (minX > MIN_DIMENSION_TO_RECUR) { doDecodeMultiple(image->crop(0, 0, (int) minX, height), hints, results, xOffset, yOffset, currentDepth+1); } // Decode above barcode if (minY > MIN_DIMENSION_TO_RECUR) { doDecodeMultiple(image->crop(0, 0, width, (int) minY), hints, results, xOffset, yOffset, currentDepth+1); } // Decode right of barcode if (maxX < width - MIN_DIMENSION_TO_RECUR) { doDecodeMultiple(image->crop((int) maxX, 0, width - (int) maxX, height), hints, results, xOffset + (int) maxX, yOffset, currentDepth+1); } // Decode below barcode if (maxY < height - MIN_DIMENSION_TO_RECUR) { doDecodeMultiple(image->crop(0, (int) maxY, width, height - (int) maxY), hints, results, xOffset, yOffset + (int) maxY, currentDepth+1); } } Ref<Result> GenericMultipleBarcodeReader::translateResultPoints(Ref<Result> result, int xOffset, int yOffset){ ArrayRef< Ref<ResultPoint> > oldResultPoints = result->getResultPoints(); if (oldResultPoints->empty()) { return result; } ArrayRef< Ref<ResultPoint> > newResultPoints(new zxing::Array< Ref<ResultPoint> >()); for (int i = 0; i < oldResultPoints->size(); i++) { Ref<ResultPoint> oldPoint = oldResultPoints[i]; newResultPoints->values().push_back(Ref<ResultPoint>(new ResultPoint(oldPoint->getX() + xOffset, oldPoint->getY() + yOffset))); } return Ref<Result>(new Result(result->getText(), result->getRawBytes(), newResultPoints, result->getBarcodeFormat())); }