* OneDReader.cpp
* ZXing
*
- * Created by Lukasz Warchol on 10-01-15.
* Copyright 2010 ZXing authors All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
namespace zxing {
namespace oned {
using namespace std;
-
+
OneDReader::OneDReader() {
}
-
- Ref<Result> OneDReader::decode(Ref<BinaryBitmap> image, DecodeHints hints) {
+ Ref<Result> OneDReader::decode(Ref<BinaryBitmap> image, DecodeHints hints) {
try {
return doDecode(image, hints);
- }catch (ReaderException re) {
+ } catch (ReaderException re) {
if (hints.getTryHarder() && image->isRotateSupported()) {
-
Ref<BinaryBitmap> rotatedImage(image->rotateCounterClockwise());
Ref<Result> result(doDecode(rotatedImage, hints));
/*
}
}
}
-
- Ref<Result> OneDReader::doDecode(Ref<BinaryBitmap> image, DecodeHints hints){
+
+ Ref<Result> OneDReader::doDecode(Ref<BinaryBitmap> image, DecodeHints hints) {
int width = image->getWidth();
int height = image->getHeight();
Ref<BitArray> row(new BitArray(width));
} else {
maxLines = 15; // 15 rows spaced 1/32 apart is roughly the middle half of the image
}
-
+
for (int x = 0; x < maxLines; x++) {
-
// Scanning from the middle out. Determine which row we're looking at next:
int rowStepsAboveOrBelow = (x + 1) >> 1;
bool isAbove = (x & 0x01) == 0; // i.e. is x even?
// Oops, if we run off the top or bottom, stop
break;
}
-
+
// Estimate black point for this row and load it:
try {
row = image->getBlackRow(rowNumber, row);
- }catch (ReaderException re) {
+ } catch (ReaderException re) {
continue;
- }catch (IllegalArgumentException re) {
+ } catch (IllegalArgumentException re) {
continue;
}
-
+
// While we have the image data in a BitArray, it's fairly cheap to reverse it in place to
// handle decoding upside down barcodes.
for (int attempt = 0; attempt < 2; attempt++) {
if (attempt == 1) { // trying again?
row->reverse(); // reverse the row and continue
}
- try {
- // Look for a barcode
- Ref<Result> result = decodeRow(rowNumber, row);
- // We found our barcode
- if (attempt == 1) {
- // // But it was upside down, so note that
- // result.putMetadata(ResultMetadataType.ORIENTATION, new Integer(180));
- // // And remember to flip the result points horizontally.
- std::vector<Ref<ResultPoint> > points(result->getResultPoints());
- // if there's exactly two points (which there should be), flip the x coordinate
- // if there's not exactly 2, I don't know what do do with it
- if (points.size() == 2) {
- Ref<ResultPoint> pointZero(new OneDResultPoint(width - points[0]->getX() - 1, points[0]->getY()));
- points[0] = pointZero;
- Ref<ResultPoint> pointOne(new OneDResultPoint(width - points[1]->getX() - 1, points[1]->getY()));
- points[1] = pointOne;
+ // Look for a barcode
+ Ref<Result> result = decodeRow(rowNumber, row);
+ // We found our barcode
+ if (!result.empty()) {
+ // // But it was upside down, so note that
+ // result.putMetadata(ResultMetadataType.ORIENTATION, new Integer(180));
+ // // And remember to flip the result points horizontally.
+ std::vector<Ref<ResultPoint> > points(result->getResultPoints());
+ // if there's exactly two points (which there should be), flip the x coordinate
+ // if there's not exactly 2, I don't know what do do with it
+ if (points.size() == 2) {
+ Ref<ResultPoint> pointZero(new OneDResultPoint(width - points[0]->getX() - 1, points[0]->getY()));
+ points[0] = pointZero;
- result.reset(new Result(result->getText(),result->getRawBytes(),points,result->getBarcodeFormat()));
- }
- }
- return result;
- } catch (ReaderException re) {
- // continue -- just couldn't decode this row
- }
+ Ref<ResultPoint> pointOne(new OneDResultPoint(width - points[1]->getX() - 1, points[1]->getY()));
+ points[1] = pointOne;
+
+ result.reset(new Result(result->getText(),result->getRawBytes(),points,result->getBarcodeFormat()));
+ }
+ return result;
+ }
}
}
throw ReaderException("doDecode() failed");
}
-
+
unsigned int OneDReader::patternMatchVariance(int counters[], int countersSize, const int pattern[], int maxIndividualVariance) {
int numCounters = countersSize;
unsigned int total = 0;
// more "significant digits"
unsigned int unitBarWidth = (total << INTEGER_MATH_SHIFT) / patternLength;
maxIndividualVariance = (maxIndividualVariance * unitBarWidth) >> INTEGER_MATH_SHIFT;
-
+
unsigned int totalVariance = 0;
for (int x = 0; x < numCounters; x++) {
int counter = counters[x] << INTEGER_MATH_SHIFT;
}
return totalVariance / total;
}
-
+
void OneDReader::recordPattern(Ref<BitArray> row, int start, int counters[], int countersCount){
int numCounters = countersCount;//sizeof(counters) / sizeof(int);
for (int i = 0; i < numCounters; i++) {
throw ReaderException("recordPattern");
}
}
-
+
OneDReader::~OneDReader() {
}
}
projects / zxing.git / blobdiff