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// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
// Original code is licensed as follows:
/*
* Copyright 2013 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.
*/
#include "../barcode.h"
#include "../BC_ResultPoint.h"
#include "BC_PDF417BarcodeMetadata.h"
#include "BC_PDF417BoundingBox.h"
#include "BC_PDF417Codeword.h"
#include "BC_PDF417BarcodeValue.h"
#include "BC_PDF417Common.h"
#include "BC_PDF417DetectionResultColumn.h"
#include "BC_PDF417DetectionResultRowIndicatorColumn.h"
CBC_DetectionResultRowIndicatorColumn::CBC_DetectionResultRowIndicatorColumn(CBC_BoundingBox* boundingBox, FX_BOOL isLeft)
: CBC_DetectionResultColumn(boundingBox)
{
m_isLeft = isLeft;
}
CBC_DetectionResultRowIndicatorColumn::~CBC_DetectionResultRowIndicatorColumn()
{
}
void CBC_DetectionResultRowIndicatorColumn::setRowNumbers()
{
for (FX_INT32 i = 0; i < m_codewords->GetSize(); i++) {
CBC_Codeword * codeword = (CBC_Codeword*)m_codewords->GetAt(i);
if (codeword != NULL) {
codeword->setRowNumberAsRowIndicatorColumn();
}
}
}
FX_INT32 CBC_DetectionResultRowIndicatorColumn::adjustCompleteIndicatorColumnRowNumbers(CBC_BarcodeMetadata barcodeMetadata)
{
CFX_PtrArray* codewords = getCodewords();
setRowNumbers();
removeIncorrectCodewords(codewords, barcodeMetadata);
CBC_BoundingBox* boundingBox = getBoundingBox();
CBC_ResultPoint* top = m_isLeft ? boundingBox->getTopLeft() : boundingBox->getTopRight();
CBC_ResultPoint* bottom = m_isLeft ? boundingBox->getBottomLeft() : boundingBox->getBottomRight();
FX_INT32 firstRow = imageRowToCodewordIndex((FX_INT32) top->GetY());
FX_INT32 lastRow = imageRowToCodewordIndex((FX_INT32) bottom->GetY());
FX_FLOAT averageRowHeight = (lastRow - firstRow) / (FX_FLOAT) barcodeMetadata.getRowCount();
FX_INT32 barcodeRow = -1;
FX_INT32 maxRowHeight = 1;
FX_INT32 currentRowHeight = 0;
for (FX_INT32 codewordsRow = firstRow; codewordsRow < lastRow; codewordsRow++) {
if (codewords->GetAt(codewordsRow) == NULL) {
continue;
}
CBC_Codeword* codeword = (CBC_Codeword*)codewords->GetAt(codewordsRow);
FX_INT32 rowDifference = codeword->getRowNumber() - barcodeRow;
if (rowDifference == 0) {
currentRowHeight++;
} else if (rowDifference == 1) {
maxRowHeight = maxRowHeight > currentRowHeight ? maxRowHeight : currentRowHeight;
currentRowHeight = 1;
barcodeRow = codeword->getRowNumber();
} else if (rowDifference < 0) {
codewords->SetAt(codewordsRow, NULL);
} else if (codeword->getRowNumber() >= barcodeMetadata.getRowCount()) {
codewords->SetAt(codewordsRow, NULL);
} else if (rowDifference > codewordsRow) {
codewords->SetAt(codewordsRow, NULL);
} else {
FX_INT32 checkedRows;
if (maxRowHeight > 2) {
checkedRows = (maxRowHeight - 2) * rowDifference;
} else {
checkedRows = rowDifference;
}
FX_BOOL closePreviousCodewordFound = checkedRows >= codewordsRow;
for (FX_INT32 i = 1; i <= checkedRows && !closePreviousCodewordFound; i++) {
closePreviousCodewordFound = codewords->GetAt(codewordsRow - i) != NULL;
}
if (closePreviousCodewordFound) {
codewords->SetAt(codewordsRow, NULL);
} else {
barcodeRow = codeword->getRowNumber();
currentRowHeight = 1;
}
}
}
return (FX_INT32) (averageRowHeight + 0.5);
}
CFX_Int32Array* CBC_DetectionResultRowIndicatorColumn::getRowHeights(FX_INT32 &e)
{
CBC_BarcodeMetadata* barcodeMetadata = getBarcodeMetadata();
if (barcodeMetadata == NULL) {
e = BCExceptionCannotMetadata;
return NULL;
}
adjustIncompleteIndicatorColumnRowNumbers(*barcodeMetadata);
CFX_Int32Array* result = FX_NEW CFX_Int32Array;
result->SetSize(barcodeMetadata->getRowCount());
for (FX_INT32 i = 0; i < getCodewords()->GetSize(); i++) {
CBC_Codeword* codeword = (CBC_Codeword*)getCodewords()->GetAt(i);
if (codeword != NULL) {
result->SetAt(codeword->getRowNumber(), result->GetAt(codeword->getRowNumber()) + 1);
}
}
return result;
}
FX_INT32 CBC_DetectionResultRowIndicatorColumn::adjustIncompleteIndicatorColumnRowNumbers(CBC_BarcodeMetadata barcodeMetadata)
{
CBC_BoundingBox* boundingBox = getBoundingBox();
CBC_ResultPoint* top = m_isLeft ? boundingBox->getTopLeft() : boundingBox->getTopRight();
CBC_ResultPoint* bottom = m_isLeft ? boundingBox->getBottomLeft() : boundingBox->getBottomRight();
FX_INT32 firstRow = imageRowToCodewordIndex((FX_INT32) top->GetY());
FX_INT32 lastRow = imageRowToCodewordIndex((FX_INT32) bottom->GetY());
FX_FLOAT averageRowHeight = (lastRow - firstRow) / (FX_FLOAT) barcodeMetadata.getRowCount();
CFX_PtrArray* codewords = getCodewords();
FX_INT32 barcodeRow = -1;
FX_INT32 maxRowHeight = 1;
FX_INT32 currentRowHeight = 0;
for (FX_INT32 codewordsRow = firstRow; codewordsRow < lastRow; codewordsRow++) {
if (codewords->GetAt(codewordsRow) == NULL) {
continue;
}
CBC_Codeword* codeword = (CBC_Codeword*)codewords->GetAt(codewordsRow);
codeword->setRowNumberAsRowIndicatorColumn();
FX_INT32 rowDifference = codeword->getRowNumber() - barcodeRow;
if (rowDifference == 0) {
currentRowHeight++;
} else if (rowDifference == 1) {
maxRowHeight = maxRowHeight > currentRowHeight ? maxRowHeight : currentRowHeight;
currentRowHeight = 1;
barcodeRow = codeword->getRowNumber();
} else if (codeword->getRowNumber() >= barcodeMetadata.getRowCount()) {
codewords->SetAt(codewordsRow, NULL);
} else {
barcodeRow = codeword->getRowNumber();
currentRowHeight = 1;
}
}
return (FX_INT32) (averageRowHeight + 0.5);
}
CBC_BarcodeMetadata* CBC_DetectionResultRowIndicatorColumn::getBarcodeMetadata()
{
CFX_PtrArray* codewords = getCodewords();
CBC_BarcodeValue barcodeColumnCount;
CBC_BarcodeValue barcodeRowCountUpperPart;
CBC_BarcodeValue barcodeRowCountLowerPart;
CBC_BarcodeValue barcodeECLevel;
for (FX_INT32 i = 0; i < codewords->GetSize(); i++) {
CBC_Codeword* codeword = (CBC_Codeword*)codewords->GetAt(i);
if (codeword == NULL) {
continue;
}
codeword->setRowNumberAsRowIndicatorColumn();
FX_INT32 rowIndicatorValue = codeword->getValue() % 30;
FX_INT32 codewordRowNumber = codeword->getRowNumber();
if (!m_isLeft) {
codewordRowNumber += 2;
}
switch (codewordRowNumber % 3) {
case 0:
barcodeRowCountUpperPart.setValue(rowIndicatorValue * 3 + 1);
break;
case 1:
barcodeECLevel.setValue(rowIndicatorValue / 3);
barcodeRowCountLowerPart.setValue(rowIndicatorValue % 3);
break;
case 2:
barcodeColumnCount.setValue(rowIndicatorValue + 1);
break;
}
}
if ((barcodeColumnCount.getValue()->GetSize() == 0) ||
(barcodeRowCountUpperPart.getValue()->GetSize() == 0) ||
(barcodeRowCountLowerPart.getValue()->GetSize() == 0) ||
(barcodeECLevel.getValue()->GetSize() == 0) ||
barcodeColumnCount.getValue()->GetAt(0) < 1 ||
barcodeRowCountUpperPart.getValue()->GetAt(0) + barcodeRowCountLowerPart.getValue()->GetAt(0) < CBC_PDF417Common::MIN_ROWS_IN_BARCODE ||
barcodeRowCountUpperPart.getValue()->GetAt(0) + barcodeRowCountLowerPart.getValue()->GetAt(0) > CBC_PDF417Common::MAX_ROWS_IN_BARCODE) {
return NULL;
}
CBC_BarcodeMetadata* barcodeMetadata = FX_NEW CBC_BarcodeMetadata(barcodeColumnCount.getValue()->GetAt(0), barcodeRowCountUpperPart.getValue()->GetAt(0), barcodeRowCountLowerPart.getValue()->GetAt(0), barcodeECLevel.getValue()->GetAt(0));
removeIncorrectCodewords(codewords, *barcodeMetadata);
return barcodeMetadata;
}
FX_BOOL CBC_DetectionResultRowIndicatorColumn::isLeft()
{
return m_isLeft;
}
CFX_ByteString CBC_DetectionResultRowIndicatorColumn::toString()
{
return (CFX_ByteString)"IsLeft: " + (CFX_ByteString)m_isLeft + '\n' + CBC_DetectionResultColumn::toString();
}
void CBC_DetectionResultRowIndicatorColumn::removeIncorrectCodewords(CFX_PtrArray* codewords, CBC_BarcodeMetadata barcodeMetadata)
{
for (FX_INT32 codewordRow = 0; codewordRow < codewords->GetSize(); codewordRow++) {
CBC_Codeword* codeword = (CBC_Codeword*)codewords->GetAt(codewordRow);
if (codeword == NULL) {
continue;
}
FX_INT32 rowIndicatorValue = codeword->getValue() % 30;
FX_INT32 codewordRowNumber = codeword->getRowNumber();
if (codewordRowNumber > barcodeMetadata.getRowCount()) {
codewords->SetAt(codewordRow, NULL);
continue;
}
if (!m_isLeft) {
codewordRowNumber += 2;
}
switch (codewordRowNumber % 3) {
case 0:
if (rowIndicatorValue * 3 + 1 != barcodeMetadata.getRowCountUpperPart()) {
codewords->SetAt(codewordRow, NULL);
}
break;
case 1:
if (rowIndicatorValue / 3 != barcodeMetadata.getErrorCorrectionLevel() ||
rowIndicatorValue % 3 != barcodeMetadata.getRowCountLowerPart()) {
codewords->SetAt(codewordRow, NULL);
}
break;
case 2:
if (rowIndicatorValue + 1 != barcodeMetadata.getColumnCount()) {
codewords->SetAt(codewordRow, NULL);
}
break;
}
}
}
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