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Unified Diff: xfa/src/fxbarcode/pdf417/BC_PDF417ScanningDecoder.cpp

Issue 1803723002: Move xfa/src up to xfa/. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master
Patch Set: Rebase to master Created 4 years, 9 months ago
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Index: xfa/src/fxbarcode/pdf417/BC_PDF417ScanningDecoder.cpp
diff --git a/xfa/src/fxbarcode/pdf417/BC_PDF417ScanningDecoder.cpp b/xfa/src/fxbarcode/pdf417/BC_PDF417ScanningDecoder.cpp
deleted file mode 100644
index 820b15e91de2eb3b4fd88141a9ca7bc43e9bc9f0..0000000000000000000000000000000000000000
--- a/xfa/src/fxbarcode/pdf417/BC_PDF417ScanningDecoder.cpp
+++ /dev/null
@@ -1,752 +0,0 @@
-// 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 "xfa/src/fxbarcode/BC_DecoderResult.h"
-#include "xfa/src/fxbarcode/BC_ResultPoint.h"
-#include "xfa/src/fxbarcode/common/BC_CommonBitMatrix.h"
-#include "xfa/src/fxbarcode/pdf417/BC_PDF417BarcodeMetadata.h"
-#include "xfa/src/fxbarcode/pdf417/BC_PDF417BarcodeValue.h"
-#include "xfa/src/fxbarcode/pdf417/BC_PDF417BoundingBox.h"
-#include "xfa/src/fxbarcode/pdf417/BC_PDF417Codeword.h"
-#include "xfa/src/fxbarcode/pdf417/BC_PDF417CodewordDecoder.h"
-#include "xfa/src/fxbarcode/pdf417/BC_PDF417Common.h"
-#include "xfa/src/fxbarcode/pdf417/BC_PDF417DecodedBitStreamParser.h"
-#include "xfa/src/fxbarcode/pdf417/BC_PDF417DecodedBitStreamParser.h"
-#include "xfa/src/fxbarcode/pdf417/BC_PDF417DecodedBitStreamParser.h"
-#include "xfa/src/fxbarcode/pdf417/BC_PDF417DetectionResult.h"
-#include "xfa/src/fxbarcode/pdf417/BC_PDF417DetectionResultColumn.h"
-#include "xfa/src/fxbarcode/pdf417/BC_PDF417DetectionResultRowIndicatorColumn.h"
-#include "xfa/src/fxbarcode/pdf417/BC_PDF417ECErrorCorrection.h"
-#include "xfa/src/fxbarcode/pdf417/BC_PDF417ECModulusGF.h"
-#include "xfa/src/fxbarcode/pdf417/BC_PDF417ECModulusPoly.h"
-#include "xfa/src/fxbarcode/pdf417/BC_PDF417ScanningDecoder.h"
-#include "xfa/src/fxbarcode/utils.h"
-
-int32_t CBC_PDF417ScanningDecoder::CODEWORD_SKEW_SIZE = 2;
-int32_t CBC_PDF417ScanningDecoder::MAX_ERRORS = 3;
-int32_t CBC_PDF417ScanningDecoder::MAX_EC_CODEWORDS = 512;
-CBC_PDF417ECErrorCorrection* CBC_PDF417ScanningDecoder::errorCorrection = NULL;
-
-CBC_PDF417ScanningDecoder::CBC_PDF417ScanningDecoder() {}
-CBC_PDF417ScanningDecoder::~CBC_PDF417ScanningDecoder() {}
-void CBC_PDF417ScanningDecoder::Initialize() {
- errorCorrection = new CBC_PDF417ECErrorCorrection;
-}
-void CBC_PDF417ScanningDecoder::Finalize() {
- delete errorCorrection;
-}
-CBC_CommonDecoderResult* CBC_PDF417ScanningDecoder::decode(
- CBC_CommonBitMatrix* image,
- CBC_ResultPoint* imageTopLeft,
- CBC_ResultPoint* imageBottomLeft,
- CBC_ResultPoint* imageTopRight,
- CBC_ResultPoint* imageBottomRight,
- int32_t minCodewordWidth,
- int32_t maxCodewordWidth,
- int32_t& e) {
- CBC_BoundingBox* boundingBox = new CBC_BoundingBox(
- image, imageTopLeft, imageBottomLeft, imageTopRight, imageBottomRight, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- CBC_DetectionResultRowIndicatorColumn* leftRowIndicatorColumn = NULL;
- CBC_DetectionResultRowIndicatorColumn* rightRowIndicatorColumn = NULL;
- CBC_DetectionResult* detectionResult = NULL;
- for (int32_t i = 0; i < 2; i++) {
- if (imageTopLeft) {
- leftRowIndicatorColumn =
- getRowIndicatorColumn(image, boundingBox, *imageTopLeft, TRUE,
- minCodewordWidth, maxCodewordWidth);
- }
- if (imageTopRight) {
- rightRowIndicatorColumn =
- getRowIndicatorColumn(image, boundingBox, *imageTopRight, FALSE,
- minCodewordWidth, maxCodewordWidth);
- }
- detectionResult = merge(leftRowIndicatorColumn, rightRowIndicatorColumn, e);
- if (e != BCExceptionNO) {
- e = BCExceptiontNotFoundInstance;
- delete leftRowIndicatorColumn;
- delete rightRowIndicatorColumn;
- delete boundingBox;
- return NULL;
- }
- if (i == 0 && (detectionResult->getBoundingBox()->getMinY() <
- boundingBox->getMinY() ||
- detectionResult->getBoundingBox()->getMaxY() >
- boundingBox->getMaxY())) {
- delete boundingBox;
- boundingBox = detectionResult->getBoundingBox();
- } else {
- detectionResult->setBoundingBox(boundingBox);
- break;
- }
- }
- int32_t maxBarcodeColumn = detectionResult->getBarcodeColumnCount() + 1;
- detectionResult->setDetectionResultColumn(0, leftRowIndicatorColumn);
- detectionResult->setDetectionResultColumn(maxBarcodeColumn,
- rightRowIndicatorColumn);
- FX_BOOL leftToRight = leftRowIndicatorColumn != NULL;
- for (int32_t barcodeColumnCount = 1; barcodeColumnCount <= maxBarcodeColumn;
- barcodeColumnCount++) {
- int32_t barcodeColumn = leftToRight ? barcodeColumnCount
- : maxBarcodeColumn - barcodeColumnCount;
- if (detectionResult->getDetectionResultColumn(barcodeColumn)) {
- continue;
- }
- CBC_DetectionResultColumn* detectionResultColumn = NULL;
- if (barcodeColumn == 0 || barcodeColumn == maxBarcodeColumn) {
- detectionResultColumn = new CBC_DetectionResultRowIndicatorColumn(
- boundingBox, barcodeColumn == 0);
- } else {
- detectionResultColumn = new CBC_DetectionResultColumn(boundingBox);
- }
- detectionResult->setDetectionResultColumn(barcodeColumn,
- detectionResultColumn);
- int32_t startColumn = -1;
- int32_t previousStartColumn = startColumn;
- for (int32_t imageRow = boundingBox->getMinY();
- imageRow <= boundingBox->getMaxY(); imageRow++) {
- startColumn =
- getStartColumn(detectionResult, barcodeColumn, imageRow, leftToRight);
- if (startColumn < 0 || startColumn > boundingBox->getMaxX()) {
- if (previousStartColumn == -1) {
- continue;
- }
- startColumn = previousStartColumn;
- }
- CBC_Codeword* codeword = detectCodeword(
- image, boundingBox->getMinX(), boundingBox->getMaxX(), leftToRight,
- startColumn, imageRow, minCodewordWidth, maxCodewordWidth);
- if (codeword) {
- detectionResultColumn->setCodeword(imageRow, codeword);
- previousStartColumn = startColumn;
- minCodewordWidth = minCodewordWidth < codeword->getWidth()
- ? minCodewordWidth
- : codeword->getWidth();
- maxCodewordWidth = maxCodewordWidth > codeword->getWidth()
- ? maxCodewordWidth
- : codeword->getWidth();
- }
- }
- }
- CBC_CommonDecoderResult* decoderresult =
- createDecoderResult(detectionResult, e);
- if (e != BCExceptionNO) {
- delete detectionResult;
- return NULL;
- }
- return decoderresult;
-}
-CFX_ByteString CBC_PDF417ScanningDecoder::toString(
- CFX_PtrArray* barcodeMatrix) {
- CFX_ByteString result;
- for (int32_t row = 0; row < barcodeMatrix->GetSize(); row++) {
- result += row;
- int32_t l = 0;
- for (; l < ((CFX_PtrArray*)barcodeMatrix->GetAt(row))->GetSize(); l++) {
- CBC_BarcodeValue* barcodeValue =
- (CBC_BarcodeValue*)((CFX_PtrArray*)barcodeMatrix->GetAt(row))
- ->GetAt(l);
- if (barcodeValue->getValue()->GetSize() == 0) {
- result += "";
- } else {
- result += barcodeValue->getValue()->GetAt(0);
- result +=
- barcodeValue->getConfidence(barcodeValue->getValue()->GetAt(0));
- }
- }
- }
- return result;
-}
-CBC_DetectionResult* CBC_PDF417ScanningDecoder::merge(
- CBC_DetectionResultRowIndicatorColumn* leftRowIndicatorColumn,
- CBC_DetectionResultRowIndicatorColumn* rightRowIndicatorColumn,
- int32_t& e) {
- if (leftRowIndicatorColumn == NULL && rightRowIndicatorColumn == NULL) {
- e = BCExceptionIllegalArgument;
- return NULL;
- }
- CBC_BarcodeMetadata* barcodeMetadata =
- getBarcodeMetadata(leftRowIndicatorColumn, rightRowIndicatorColumn);
- if (barcodeMetadata == NULL) {
- e = BCExceptionCannotMetadata;
- return NULL;
- }
- CBC_BoundingBox* leftboundingBox =
- adjustBoundingBox(leftRowIndicatorColumn, e);
- if (e != BCExceptionNO) {
- delete barcodeMetadata;
- return NULL;
- }
- CBC_BoundingBox* rightboundingBox =
- adjustBoundingBox(rightRowIndicatorColumn, e);
- if (e != BCExceptionNO) {
- delete barcodeMetadata;
- return NULL;
- }
- CBC_BoundingBox* boundingBox =
- CBC_BoundingBox::merge(leftboundingBox, rightboundingBox, e);
- if (e != BCExceptionNO) {
- delete barcodeMetadata;
- return NULL;
- }
- CBC_DetectionResult* detectionresult =
- new CBC_DetectionResult(barcodeMetadata, boundingBox);
- return detectionresult;
-}
-CBC_BoundingBox* CBC_PDF417ScanningDecoder::adjustBoundingBox(
- CBC_DetectionResultRowIndicatorColumn* rowIndicatorColumn,
- int32_t& e) {
- if (rowIndicatorColumn == NULL) {
- return NULL;
- }
- CFX_Int32Array* rowHeights = rowIndicatorColumn->getRowHeights(e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- int32_t maxRowHeight = getMax(*rowHeights);
- int32_t missingStartRows = 0;
- for (int32_t i = 0; i < rowHeights->GetSize(); i++) {
- int32_t rowHeight = rowHeights->GetAt(i);
- missingStartRows += maxRowHeight - rowHeight;
- if (rowHeight > 0) {
- break;
- }
- }
- CFX_PtrArray* codewords = rowIndicatorColumn->getCodewords();
- for (int32_t row = 0; missingStartRows > 0 && codewords->GetAt(row) == NULL;
- row++) {
- missingStartRows--;
- }
- int32_t missingEndRows = 0;
- for (int32_t row1 = rowHeights->GetSize() - 1; row1 >= 0; row1--) {
- missingEndRows += maxRowHeight - rowHeights->GetAt(row1);
- if (rowHeights->GetAt(row1) > 0) {
- break;
- }
- }
- for (int32_t row2 = codewords->GetSize() - 1;
- missingEndRows > 0 && codewords->GetAt(row2) == NULL; row2--) {
- missingEndRows--;
- }
- CBC_BoundingBox* boundingBox =
- rowIndicatorColumn->getBoundingBox()->addMissingRows(
- missingStartRows, missingEndRows, rowIndicatorColumn->isLeft(), e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- return boundingBox;
-}
-int32_t CBC_PDF417ScanningDecoder::getMax(CFX_Int32Array& values) {
- int32_t maxValue = -1;
- for (int32_t i = 0; i < values.GetSize(); i++) {
- int32_t value = values.GetAt(i);
- maxValue = maxValue > value ? maxValue : value;
- }
- return maxValue;
-}
-CBC_BarcodeMetadata* CBC_PDF417ScanningDecoder::getBarcodeMetadata(
- CBC_DetectionResultRowIndicatorColumn* leftRowIndicatorColumn,
- CBC_DetectionResultRowIndicatorColumn* rightRowIndicatorColumn) {
- CBC_BarcodeMetadata* leftBarcodeMetadata = NULL;
- CBC_BarcodeMetadata* rightBarcodeMetadata = NULL;
- if (leftRowIndicatorColumn == NULL ||
- (leftBarcodeMetadata = leftRowIndicatorColumn->getBarcodeMetadata()) ==
- NULL) {
- return rightRowIndicatorColumn == NULL
- ? NULL
- : rightRowIndicatorColumn->getBarcodeMetadata();
- }
- if (rightRowIndicatorColumn == NULL ||
- (rightBarcodeMetadata = rightRowIndicatorColumn->getBarcodeMetadata()) ==
- NULL) {
- return leftRowIndicatorColumn == NULL
- ? NULL
- : leftRowIndicatorColumn->getBarcodeMetadata();
- }
- if (leftBarcodeMetadata->getColumnCount() !=
- rightBarcodeMetadata->getColumnCount() &&
- leftBarcodeMetadata->getErrorCorrectionLevel() !=
- rightBarcodeMetadata->getErrorCorrectionLevel() &&
- leftBarcodeMetadata->getRowCount() !=
- rightBarcodeMetadata->getRowCount()) {
- delete leftBarcodeMetadata;
- delete rightBarcodeMetadata;
- return NULL;
- }
- delete rightBarcodeMetadata;
- return leftBarcodeMetadata;
-}
-CBC_DetectionResultRowIndicatorColumn*
-CBC_PDF417ScanningDecoder::getRowIndicatorColumn(CBC_CommonBitMatrix* image,
- CBC_BoundingBox* boundingBox,
- CBC_ResultPoint startPoint,
- FX_BOOL leftToRight,
- int32_t minCodewordWidth,
- int32_t maxCodewordWidth) {
- CBC_DetectionResultRowIndicatorColumn* rowIndicatorColumn =
- new CBC_DetectionResultRowIndicatorColumn(boundingBox, leftToRight);
- for (int32_t i = 0; i < 2; i++) {
- int32_t increment = i == 0 ? 1 : -1;
- int32_t startColumn = (int32_t)startPoint.GetX();
- for (int32_t imageRow = (int32_t)startPoint.GetY();
- imageRow <= boundingBox->getMaxY() &&
- imageRow >= boundingBox->getMinY();
- imageRow += increment) {
- CBC_Codeword* codeword =
- detectCodeword(image, 0, image->GetWidth(), leftToRight, startColumn,
- imageRow, minCodewordWidth, maxCodewordWidth);
- if (codeword) {
- rowIndicatorColumn->setCodeword(imageRow, codeword);
- if (leftToRight) {
- startColumn = codeword->getStartX();
- } else {
- startColumn = codeword->getEndX();
- }
- }
- }
- }
- return rowIndicatorColumn;
-}
-void CBC_PDF417ScanningDecoder::adjustCodewordCount(
- CBC_DetectionResult* detectionResult,
- CFX_PtrArray* barcodeMatrix,
- int32_t& e) {
- CFX_Int32Array* numberOfCodewords =
- ((CBC_BarcodeValue*)((CFX_PtrArray*)barcodeMatrix->GetAt(0))->GetAt(1))
- ->getValue();
- int32_t calculatedNumberOfCodewords =
- detectionResult->getBarcodeColumnCount() *
- detectionResult->getBarcodeRowCount() -
- getNumberOfECCodeWords(detectionResult->getBarcodeECLevel());
- if (numberOfCodewords->GetSize() == 0) {
- if (calculatedNumberOfCodewords < 1 ||
- calculatedNumberOfCodewords >
- CBC_PDF417Common::MAX_CODEWORDS_IN_BARCODE) {
- e = BCExceptiontNotFoundInstance;
- delete numberOfCodewords;
- BC_EXCEPTION_CHECK_ReturnVoid(e);
- }
- ((CBC_BarcodeValue*)((CFX_PtrArray*)barcodeMatrix->GetAt(0))->GetAt(1))
- ->setValue(calculatedNumberOfCodewords);
- } else if (numberOfCodewords->GetAt(0) != calculatedNumberOfCodewords) {
- ((CBC_BarcodeValue*)((CFX_PtrArray*)barcodeMatrix->GetAt(0))->GetAt(1))
- ->setValue(calculatedNumberOfCodewords);
- }
- delete numberOfCodewords;
-}
-CBC_CommonDecoderResult* CBC_PDF417ScanningDecoder::createDecoderResult(
- CBC_DetectionResult* detectionResult,
- int32_t& e) {
- CFX_PtrArray* barcodeMatrix = createBarcodeMatrix(detectionResult);
- adjustCodewordCount(detectionResult, barcodeMatrix, e);
- if (e != BCExceptionNO) {
- for (int32_t i = 0; i < barcodeMatrix->GetSize(); i++) {
- CFX_PtrArray* temp = (CFX_PtrArray*)barcodeMatrix->GetAt(i);
- for (int32_t j = 0; j < temp->GetSize(); j++) {
- delete (CBC_BarcodeValue*)temp->GetAt(j);
- }
- temp->RemoveAll();
- delete temp;
- }
- barcodeMatrix->RemoveAll();
- delete barcodeMatrix;
- return NULL;
- }
- CFX_Int32Array erasures;
- CFX_Int32Array codewords;
- codewords.SetSize(detectionResult->getBarcodeRowCount() *
- detectionResult->getBarcodeColumnCount());
- CFX_PtrArray ambiguousIndexValuesList;
- CFX_Int32Array ambiguousIndexesList;
- for (int32_t row = 0; row < detectionResult->getBarcodeRowCount(); row++) {
- for (int32_t l = 0; l < detectionResult->getBarcodeColumnCount(); l++) {
- CFX_Int32Array* values =
- ((CBC_BarcodeValue*)((CFX_PtrArray*)barcodeMatrix->GetAt(row))
- ->GetAt(l + 1))
- ->getValue();
- int32_t codewordIndex =
- row * detectionResult->getBarcodeColumnCount() + l;
- if (values->GetSize() == 0) {
- erasures.Add(codewordIndex);
- } else if (values->GetSize() == 1) {
- codewords[codewordIndex] = values->GetAt(0);
- } else {
- ambiguousIndexesList.Add(codewordIndex);
- ambiguousIndexValuesList.Add(values);
- }
- }
- }
- CFX_PtrArray ambiguousIndexValues;
- ambiguousIndexValues.SetSize(ambiguousIndexValuesList.GetSize());
- for (int32_t i = 0; i < ambiguousIndexValues.GetSize(); i++) {
- ambiguousIndexValues.SetAt(i, ambiguousIndexValuesList.GetAt(i));
- }
- for (int32_t l = 0; l < barcodeMatrix->GetSize(); l++) {
- CFX_PtrArray* temp = (CFX_PtrArray*)barcodeMatrix->GetAt(l);
- for (int32_t j = 0; j < temp->GetSize(); j++) {
- delete (CBC_BarcodeValue*)temp->GetAt(j);
- }
- temp->RemoveAll();
- delete temp;
- }
- barcodeMatrix->RemoveAll();
- delete barcodeMatrix;
- CBC_CommonDecoderResult* decoderResult =
- createDecoderResultFromAmbiguousValues(
- detectionResult->getBarcodeECLevel(), codewords, erasures,
- ambiguousIndexesList, ambiguousIndexValues, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- return decoderResult;
-}
-CBC_CommonDecoderResult*
-CBC_PDF417ScanningDecoder::createDecoderResultFromAmbiguousValues(
- int32_t ecLevel,
- CFX_Int32Array& codewords,
- CFX_Int32Array& erasureArray,
- CFX_Int32Array& ambiguousIndexes,
- CFX_PtrArray& ambiguousIndexValues,
- int32_t& e) {
- CFX_Int32Array ambiguousIndexCount;
- ambiguousIndexCount.SetSize(ambiguousIndexes.GetSize());
- int32_t tries = 100;
- while (tries-- > 0) {
- for (int32_t l = 0; l < ambiguousIndexCount.GetSize(); l++) {
- codewords[ambiguousIndexes[l]] =
- ((CFX_Int32Array*)ambiguousIndexValues.GetAt(l))
- ->GetAt(ambiguousIndexCount[l]);
- }
- CBC_CommonDecoderResult* decoderResult =
- decodeCodewords(codewords, ecLevel, erasureArray, e);
- if (e != BCExceptionNO) {
- e = BCExceptionNO;
- continue;
- } else {
- return decoderResult;
- }
- if (ambiguousIndexCount.GetSize() == 0) {
- e = BCExceptionChecksumInstance;
- return NULL;
- }
- for (int32_t i = 0; i < ambiguousIndexCount.GetSize(); i++) {
- if (ambiguousIndexCount[i] <
- ((CFX_Int32Array*)(ambiguousIndexValues.GetAt(i)))->GetSize() - 1) {
- ambiguousIndexCount[i]++;
- break;
- } else {
- ambiguousIndexCount[i] = 0;
- if (i == ambiguousIndexCount.GetSize() - 1) {
- e = BCExceptionChecksumInstance;
- return NULL;
- }
- }
- }
- }
- e = BCExceptionChecksumInstance;
- return NULL;
-}
-CFX_PtrArray* CBC_PDF417ScanningDecoder::createBarcodeMatrix(
- CBC_DetectionResult* detectionResult) {
- CFX_PtrArray* barcodeMatrix = new CFX_PtrArray;
- barcodeMatrix->SetSize(detectionResult->getBarcodeRowCount());
- CFX_PtrArray* temp = NULL;
- int32_t colume = 0;
- for (int32_t row = 0; row < barcodeMatrix->GetSize(); row++) {
- temp = new CFX_PtrArray;
- temp->SetSize(detectionResult->getBarcodeColumnCount() + 2);
- for (colume = 0; colume < detectionResult->getBarcodeColumnCount() + 2;
- colume++) {
- temp->SetAt(colume, new CBC_BarcodeValue());
- }
- barcodeMatrix->SetAt(row, temp);
- }
- colume = -1;
- for (int32_t i = 0;
- i < detectionResult->getDetectionResultColumns().GetSize(); i++) {
- CBC_DetectionResultColumn* detectionResultColumn =
- (CBC_DetectionResultColumn*)detectionResult->getDetectionResultColumns()
- .GetAt(i);
- colume++;
- if (detectionResultColumn == NULL) {
- continue;
- }
- CFX_PtrArray* temp = detectionResultColumn->getCodewords();
- for (int32_t l = 0; l < temp->GetSize(); l++) {
- CBC_Codeword* codeword = (CBC_Codeword*)temp->GetAt(l);
- if (codeword == NULL || codeword->getRowNumber() == -1) {
- continue;
- }
- ((CBC_BarcodeValue*)((CFX_PtrArray*)barcodeMatrix->GetAt(
- codeword->getRowNumber()))
- ->GetAt(colume))
- ->setValue(codeword->getValue());
- }
- }
- return barcodeMatrix;
-}
-FX_BOOL CBC_PDF417ScanningDecoder::isValidBarcodeColumn(
- CBC_DetectionResult* detectionResult,
- int32_t barcodeColumn) {
- return barcodeColumn >= 0 &&
- barcodeColumn <= detectionResult->getBarcodeColumnCount() + 1;
-}
-int32_t CBC_PDF417ScanningDecoder::getStartColumn(
- CBC_DetectionResult* detectionResult,
- int32_t barcodeColumn,
- int32_t imageRow,
- FX_BOOL leftToRight) {
- int32_t offset = leftToRight ? 1 : -1;
- CBC_Codeword* codeword = NULL;
- if (isValidBarcodeColumn(detectionResult, barcodeColumn - offset)) {
- codeword = detectionResult->getDetectionResultColumn(barcodeColumn - offset)
- ->getCodeword(imageRow);
- }
- if (codeword) {
- return leftToRight ? codeword->getEndX() : codeword->getStartX();
- }
- codeword = detectionResult->getDetectionResultColumn(barcodeColumn)
- ->getCodewordNearby(imageRow);
- if (codeword) {
- return leftToRight ? codeword->getStartX() : codeword->getEndX();
- }
- if (isValidBarcodeColumn(detectionResult, barcodeColumn - offset)) {
- codeword = detectionResult->getDetectionResultColumn(barcodeColumn - offset)
- ->getCodewordNearby(imageRow);
- }
- if (codeword) {
- return leftToRight ? codeword->getEndX() : codeword->getStartX();
- }
- int32_t skippedColumns = 0;
- while (isValidBarcodeColumn(detectionResult, barcodeColumn - offset)) {
- barcodeColumn -= offset;
- for (int32_t i = 0;
- i < detectionResult->getDetectionResultColumn(barcodeColumn)
- ->getCodewords()
- ->GetSize();
- i++) {
- CBC_Codeword* previousRowCodeword =
- (CBC_Codeword*)detectionResult->getDetectionResultColumn(
- barcodeColumn)
- ->getCodewords()
- ->GetAt(i);
- if (previousRowCodeword) {
- return (leftToRight ? previousRowCodeword->getEndX()
- : previousRowCodeword->getStartX()) +
- offset * skippedColumns * (previousRowCodeword->getEndX() -
- previousRowCodeword->getStartX());
- }
- }
- skippedColumns++;
- }
- return leftToRight ? detectionResult->getBoundingBox()->getMinX()
- : detectionResult->getBoundingBox()->getMaxX();
-}
-CBC_Codeword* CBC_PDF417ScanningDecoder::detectCodeword(
- CBC_CommonBitMatrix* image,
- int32_t minColumn,
- int32_t maxColumn,
- FX_BOOL leftToRight,
- int32_t startColumn,
- int32_t imageRow,
- int32_t minCodewordWidth,
- int32_t maxCodewordWidth) {
- startColumn = adjustCodewordStartColumn(image, minColumn, maxColumn,
- leftToRight, startColumn, imageRow);
- CFX_Int32Array* moduleBitCount = getModuleBitCount(
- image, minColumn, maxColumn, leftToRight, startColumn, imageRow);
- if (moduleBitCount == NULL) {
- return NULL;
- }
- int32_t endColumn;
- int32_t codewordBitCount = CBC_PDF417Common::getBitCountSum(*moduleBitCount);
- if (leftToRight) {
- endColumn = startColumn + codewordBitCount;
- } else {
- for (int32_t i = 0; i<moduleBitCount->GetSize()>> 1; i++) {
- int32_t tmpCount = moduleBitCount->GetAt(i);
- moduleBitCount->SetAt(
- i, moduleBitCount->GetAt(moduleBitCount->GetSize() - 1 - i));
- moduleBitCount->SetAt(moduleBitCount->GetSize() - 1 - i, tmpCount);
- }
- endColumn = startColumn;
- startColumn = endColumn - codewordBitCount;
- }
- int32_t decodedValue =
- CBC_PDF417CodewordDecoder::getDecodedValue(*moduleBitCount);
- int32_t codeword = CBC_PDF417Common::getCodeword(decodedValue);
- delete moduleBitCount;
- if (codeword == -1) {
- return NULL;
- }
- return new CBC_Codeword(startColumn, endColumn,
- getCodewordBucketNumber(decodedValue), codeword);
-}
-CFX_Int32Array* CBC_PDF417ScanningDecoder::getModuleBitCount(
- CBC_CommonBitMatrix* image,
- int32_t minColumn,
- int32_t maxColumn,
- FX_BOOL leftToRight,
- int32_t startColumn,
- int32_t imageRow) {
- int32_t imageColumn = startColumn;
- CFX_Int32Array* moduleBitCount = new CFX_Int32Array;
- moduleBitCount->SetSize(8);
- int32_t moduleNumber = 0;
- int32_t increment = leftToRight ? 1 : -1;
- FX_BOOL previousPixelValue = leftToRight;
- while (((leftToRight && imageColumn < maxColumn) ||
- (!leftToRight && imageColumn >= minColumn)) &&
- moduleNumber < moduleBitCount->GetSize()) {
- if (image->Get(imageColumn, imageRow) == previousPixelValue) {
- moduleBitCount->SetAt(moduleNumber,
- moduleBitCount->GetAt(moduleNumber) + 1);
- imageColumn += increment;
- } else {
- moduleNumber++;
- previousPixelValue = !previousPixelValue;
- }
- }
- if (moduleNumber == moduleBitCount->GetSize() ||
- (((leftToRight && imageColumn == maxColumn) ||
- (!leftToRight && imageColumn == minColumn)) &&
- moduleNumber == moduleBitCount->GetSize() - 1)) {
- return moduleBitCount;
- }
- delete moduleBitCount;
- return NULL;
-}
-int32_t CBC_PDF417ScanningDecoder::getNumberOfECCodeWords(
- int32_t barcodeECLevel) {
- return 2 << barcodeECLevel;
-}
-int32_t CBC_PDF417ScanningDecoder::adjustCodewordStartColumn(
- CBC_CommonBitMatrix* image,
- int32_t minColumn,
- int32_t maxColumn,
- FX_BOOL leftToRight,
- int32_t codewordStartColumn,
- int32_t imageRow) {
- int32_t correctedStartColumn = codewordStartColumn;
- int32_t increment = leftToRight ? -1 : 1;
- for (int32_t i = 0; i < 2; i++) {
- while (((leftToRight && correctedStartColumn >= minColumn) ||
- (!leftToRight && correctedStartColumn < maxColumn)) &&
- leftToRight == image->Get(correctedStartColumn, imageRow)) {
- if (abs(codewordStartColumn - correctedStartColumn) >
- CODEWORD_SKEW_SIZE) {
- return codewordStartColumn;
- }
- correctedStartColumn += increment;
- }
- increment = -increment;
- leftToRight = !leftToRight;
- }
- return correctedStartColumn;
-}
-FX_BOOL CBC_PDF417ScanningDecoder::checkCodewordSkew(int32_t codewordSize,
- int32_t minCodewordWidth,
- int32_t maxCodewordWidth) {
- return minCodewordWidth - CODEWORD_SKEW_SIZE <= codewordSize &&
- codewordSize <= maxCodewordWidth + CODEWORD_SKEW_SIZE;
-}
-CBC_CommonDecoderResult* CBC_PDF417ScanningDecoder::decodeCodewords(
- CFX_Int32Array& codewords,
- int32_t ecLevel,
- CFX_Int32Array& erasures,
- int32_t& e) {
- if (codewords.GetSize() == 0) {
- e = BCExceptionFormatInstance;
- return NULL;
- }
- int32_t numECCodewords = 1 << (ecLevel + 1);
- correctErrors(codewords, erasures, numECCodewords, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- verifyCodewordCount(codewords, numECCodewords, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- CFX_ByteString bytestring;
- CBC_CommonDecoderResult* decoderResult = CBC_DecodedBitStreamPaser::decode(
- codewords, bytestring.FormatInteger(ecLevel), e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- return decoderResult;
-}
-int32_t CBC_PDF417ScanningDecoder::correctErrors(CFX_Int32Array& codewords,
- CFX_Int32Array& erasures,
- int32_t numECCodewords,
- int32_t& e) {
- if ((erasures.GetSize() != 0 &&
- erasures.GetSize() > (numECCodewords / 2 + MAX_ERRORS)) ||
- numECCodewords < 0 || numECCodewords > MAX_EC_CODEWORDS) {
- e = BCExceptionChecksumInstance;
- return -1;
- }
- int32_t result = CBC_PDF417ECErrorCorrection::decode(
- codewords, numECCodewords, erasures, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, -1);
- return result;
-}
-void CBC_PDF417ScanningDecoder::verifyCodewordCount(CFX_Int32Array& codewords,
- int32_t numECCodewords,
- int32_t& e) {
- if (codewords.GetSize() < 4) {
- e = BCExceptionFormatInstance;
- return;
- }
- int32_t numberOfCodewords = codewords.GetAt(0);
- if (numberOfCodewords > codewords.GetSize()) {
- e = BCExceptionFormatInstance;
- return;
- }
- if (numberOfCodewords == 0) {
- if (numECCodewords < codewords.GetSize()) {
- codewords[0] = codewords.GetSize() - numECCodewords;
- } else {
- e = BCExceptionFormatInstance;
- return;
- }
- }
-}
-CFX_Int32Array* CBC_PDF417ScanningDecoder::getBitCountForCodeword(
- int32_t codeword) {
- CFX_Int32Array* result = new CFX_Int32Array;
- result->SetSize(8);
- int32_t previousValue = 0;
- int32_t i = result->GetSize() - 1;
- while (TRUE) {
- if ((codeword & 0x1) != previousValue) {
- previousValue = codeword & 0x1;
- i--;
- if (i < 0) {
- break;
- }
- }
- result->SetAt(i, result->GetAt(i) + 1);
- codeword >>= 1;
- }
- return result;
-}
-int32_t CBC_PDF417ScanningDecoder::getCodewordBucketNumber(int32_t codeword) {
- CFX_Int32Array* array = getBitCountForCodeword(codeword);
- int32_t result = getCodewordBucketNumber(*array);
- delete array;
- return result;
-}
-int32_t CBC_PDF417ScanningDecoder::getCodewordBucketNumber(
- CFX_Int32Array& moduleBitCount) {
- return (moduleBitCount.GetAt(0) - moduleBitCount.GetAt(2) +
- moduleBitCount.GetAt(4) - moduleBitCount.GetAt(6) + 9) %
- 9;
-}
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