// 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; | |
class CBC_PDF417ScanningDecoder : public CFX_Object | |
{ | |
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, FX_INT32 minCodewordWidth, FX_INT32 maxCodewordWidth, FX_INT32 &e); | |
static CFX_ByteString toString(CFX_PtrArray* barcodeMatrix); | |
private: | |
static FX_INT32 CODEWORD_SKEW_SIZE; | |
static FX_INT32 MAX_ERRORS; | |
static FX_INT32 MAX_EC_CODEWORDS; | |
static CBC_PDF417ECErrorCorrection* errorCorrection; | |
static CBC_DetectionResult* merge(CBC_DetectionResultRowIndicatorColumn* leftRowIndicatorColumn, CBC_DetectionResultRowIndicatorColumn* rightRowIndicatorColumn, FX_INT32 &e); | |
static CBC_BoundingBox* adjustBoundingBox(CBC_DetectionResultRowIndicatorColumn* rowIndicatorColumn, FX_INT32 &e); | |
static FX_INT32 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, FX_INT32 minCodewordWidth, FX_INT32 maxCodewordWidth); | |
static void adjustCodewordCount(CBC_DetectionResult* detectionResult, CFX_PtrArray* barcodeMatrix, FX_INT32 &e); | |
static CBC_CommonDecoderResult* createDecoderResult(CBC_DetectionResult* detectionResult, FX_INT32 &e); | |
static CBC_CommonDecoderResult* createDecoderResultFromAmbiguousValues(FX_INT32 ecLevel, CFX_Int32Array &codewords, CFX_Int32Array &erasureArray, CFX_Int32Array &ambiguousIndexes, | |
CFX_PtrArray& ambiguousIndexValues, FX_INT32 &e); | |
static CFX_PtrArray* createBarcodeMatrix(CBC_DetectionResult* detectionResult); | |
static FX_BOOL isValidBarcodeColumn(CBC_DetectionResult* detectionResult, FX_INT32 barcodeColumn); | |
static FX_INT32 getStartColumn(CBC_DetectionResult* detectionResult, FX_INT32 barcodeColumn, FX_INT32 imageRow, FX_BOOL leftToRight); | |
static CBC_Codeword* detectCodeword(CBC_CommonBitMatrix* image, FX_INT32 minColumn, FX_INT32 maxColumn, FX_BOOL leftToRight, FX_INT32 startColumn, | |
FX_INT32 imageRow, FX_INT32 minCodewordWidth, FX_INT32 maxCodewordWidth); | |
static CFX_Int32Array* getModuleBitCount(CBC_CommonBitMatrix* image, FX_INT32 minColumn, FX_INT32 maxColumn, FX_BOOL leftToRight, FX_INT32 startColumn, FX_INT32 imageRow); | |
static FX_INT32 getNumberOfECCodeWords(FX_INT32 barcodeECLevel); | |
static FX_INT32 adjustCodewordStartColumn(CBC_CommonBitMatrix* image, FX_INT32 minColumn, FX_INT32 maxColumn, FX_BOOL leftToRight, FX_INT32 codewordStartColumn, FX_INT32 imageRow); | |
static FX_BOOL checkCodewordSkew(FX_INT32 codewordSize, FX_INT32 minCodewordWidth, FX_INT32 maxCodewordWidth); | |
static CBC_CommonDecoderResult* decodeCodewords(CFX_Int32Array &codewords, FX_INT32 ecLevel, CFX_Int32Array &erasures, FX_INT32 &e); | |
static FX_INT32 correctErrors(CFX_Int32Array &codewords, CFX_Int32Array &erasures, FX_INT32 numECCodewords, FX_INT32 &e); | |
static void verifyCodewordCount(CFX_Int32Array &codewords, FX_INT32 numECCodewords, FX_INT32 &e); | |
static CFX_Int32Array* getBitCountForCodeword(FX_INT32 codeword); | |
static FX_INT32 getCodewordBucketNumber(FX_INT32 codeword); | |
static FX_INT32 getCodewordBucketNumber(CFX_Int32Array& moduleBitCount); | |
}; | |
#endif |