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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
#ifndef XFA_SRC_FXBARCODE_PDF417_BC_PDF417SCANNINGDECODER_H_
#define XFA_SRC_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_SRC_FXBARCODE_PDF417_BC_PDF417SCANNINGDECODER_H_
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