diff options
Diffstat (limited to 'xfa/fxbarcode/pdf417/BC_PDF417ScanningDecoder.h')
| -rw-r--r-- | xfa/fxbarcode/pdf417/BC_PDF417ScanningDecoder.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/xfa/fxbarcode/pdf417/BC_PDF417ScanningDecoder.h b/xfa/fxbarcode/pdf417/BC_PDF417ScanningDecoder.h new file mode 100644 index 0000000000..6dbc125c31 --- /dev/null +++ b/xfa/fxbarcode/pdf417/BC_PDF417ScanningDecoder.h @@ -0,0 +1,119 @@ +// 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 XFA_FXBARCODE_PDF417_BC_PDF417SCANNINGDECODER_H_ +#define XFA_FXBARCODE_PDF417_BC_PDF417SCANNINGDECODER_H_ + +class CBC_CommonDecoderResult; +class CBC_CommonBitMatrix; +class CBC_Codeword; +class CBC_BoundingBox; +class CBC_ResultPoint; +class CBC_BarcodeMetadata; +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 // XFA_FXBARCODE_PDF417_BC_PDF417SCANNINGDECODER_H_ |