// 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 | |
#ifndef _BC_PDF417SCANNINGDECODER_H_ | |
#define _BC_PDF417SCANNINGDECODER_H_ | |
class CBC_CommonDecoderResult; | |
class CBC_CommonBitMatrix; | |
class CBC_ErrorCorrection; | |
class CBC_Codeword; | |
class CBC_BoundingBox; | |
class CBC_ResultPoint; | |
class CBC_BarcodeMetadata; | |
class CBC_BarcodeValue; | |
class CBC_DetectionResult; | |
class CBC_DetectionResultRowIndicatorColumn; | |
class CBC_PDF417ScanningDecoder { | |
public: | |
CBC_PDF417ScanningDecoder(); | |
virtual ~CBC_PDF417ScanningDecoder(); | |
static void Initialize(); | |
static void Finalize(); | |
static CBC_CommonDecoderResult* 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); | |
static CFX_ByteString toString(CFX_PtrArray* barcodeMatrix); | |
private: | |
static int32_t CODEWORD_SKEW_SIZE; | |
static int32_t MAX_ERRORS; | |
static int32_t MAX_EC_CODEWORDS; | |
static CBC_PDF417ECErrorCorrection* errorCorrection; | |
static CBC_DetectionResult* merge( | |
CBC_DetectionResultRowIndicatorColumn* leftRowIndicatorColumn, | |
CBC_DetectionResultRowIndicatorColumn* rightRowIndicatorColumn, | |
int32_t& e); | |
static CBC_BoundingBox* adjustBoundingBox( | |
CBC_DetectionResultRowIndicatorColumn* rowIndicatorColumn, | |
int32_t& e); | |
static int32_t getMax(CFX_Int32Array& values); | |
static CBC_BarcodeMetadata* getBarcodeMetadata( | |
CBC_DetectionResultRowIndicatorColumn* leftRowIndicatorColumn, | |
CBC_DetectionResultRowIndicatorColumn* rightRowIndicatorColumn); | |
static CBC_DetectionResultRowIndicatorColumn* getRowIndicatorColumn( | |
CBC_CommonBitMatrix* image, | |
CBC_BoundingBox* boundingBox, | |
CBC_ResultPoint startPoint, | |
FX_BOOL leftToRight, | |
int32_t minCodewordWidth, | |
int32_t maxCodewordWidth); | |
static void adjustCodewordCount(CBC_DetectionResult* detectionResult, | |
CFX_PtrArray* barcodeMatrix, | |
int32_t& e); | |
static CBC_CommonDecoderResult* createDecoderResult( | |
CBC_DetectionResult* detectionResult, | |
int32_t& e); | |
static CBC_CommonDecoderResult* createDecoderResultFromAmbiguousValues( | |
int32_t ecLevel, | |
CFX_Int32Array& codewords, | |
CFX_Int32Array& erasureArray, | |
CFX_Int32Array& ambiguousIndexes, | |
CFX_PtrArray& ambiguousIndexValues, | |
int32_t& e); | |
static CFX_PtrArray* createBarcodeMatrix( | |
CBC_DetectionResult* detectionResult); | |
static FX_BOOL isValidBarcodeColumn(CBC_DetectionResult* detectionResult, | |
int32_t barcodeColumn); | |
static int32_t getStartColumn(CBC_DetectionResult* detectionResult, | |
int32_t barcodeColumn, | |
int32_t imageRow, | |
FX_BOOL leftToRight); | |
static CBC_Codeword* 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); | |
static CFX_Int32Array* getModuleBitCount(CBC_CommonBitMatrix* image, | |
int32_t minColumn, | |
int32_t maxColumn, | |
FX_BOOL leftToRight, | |
int32_t startColumn, | |
int32_t imageRow); | |
static int32_t getNumberOfECCodeWords(int32_t barcodeECLevel); | |
static int32_t adjustCodewordStartColumn(CBC_CommonBitMatrix* image, | |
int32_t minColumn, | |
int32_t maxColumn, | |
FX_BOOL leftToRight, | |
int32_t codewordStartColumn, | |
int32_t imageRow); | |
static FX_BOOL checkCodewordSkew(int32_t codewordSize, | |
int32_t minCodewordWidth, | |
int32_t maxCodewordWidth); | |
static CBC_CommonDecoderResult* decodeCodewords(CFX_Int32Array& codewords, | |
int32_t ecLevel, | |
CFX_Int32Array& erasures, | |
int32_t& e); | |
static int32_t correctErrors(CFX_Int32Array& codewords, | |
CFX_Int32Array& erasures, | |
int32_t numECCodewords, | |
int32_t& e); | |
static void verifyCodewordCount(CFX_Int32Array& codewords, | |
int32_t numECCodewords, | |
int32_t& e); | |
static CFX_Int32Array* getBitCountForCodeword(int32_t codeword); | |
static int32_t getCodewordBucketNumber(int32_t codeword); | |
static int32_t getCodewordBucketNumber(CFX_Int32Array& moduleBitCount); | |
}; | |
#endif |