xfa/src/fxbarcode/pdf417/BC_PDF417Detector.h

// 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_DETECTOR_H_
#define _BC_DETECTOR_H_
class CBC_PDF417DetectorResult;
class CBC_BinaryBitmap;
class CBC_CommonBitMatrix;
class CBC_CommonBitArray;
class CBC_Detector
{
public:
    CBC_Detector();
    virtual ~CBC_Detector();
    static CBC_PDF417DetectorResult* detect(CBC_BinaryBitmap* image, int32_t hints, FX_BOOL multiple, int32_t &e);
    static void rotate180(CBC_CommonBitMatrix* bitMatrix);
    static CBC_CommonBitArray* mirror(CBC_CommonBitArray* input, CBC_CommonBitArray* result);
private:
    static int32_t INDEXES_START_PATTERN[];
    static int32_t INDEXES_STOP_PATTERN[];
    static int32_t INTEGER_MATH_SHIFT;
    static int32_t PATTERN_MATCH_RESULT_SCALE_FACTOR;
    static int32_t MAX_AVG_VARIANCE;
    static int32_t MAX_INDIVIDUAL_VARIANCE;
    static int32_t START_PATTERN[];
    static int32_t STOP_PATTERN[];
    static int32_t MAX_PIXEL_DRIFT;
    static int32_t MAX_PATTERN_DRIFT;
    static int32_t SKIPPED_ROW_COUNT_MAX;
    static int32_t ROW_STEP;
    static int32_t BARCODE_MIN_HEIGHT;
    static CFX_PtrArray* detect(FX_BOOL multiple, CBC_CommonBitMatrix* bitMatrix);
    static CFX_PtrArray* findVertices(CBC_CommonBitMatrix* matrix, int32_t startRow, int32_t startColumn);
    static void copyToResult(CFX_PtrArray* result, CFX_PtrArray* tmpResult, int32_t* destinationIndexes, int32_t destinationLength);
    static CFX_PtrArray* findRowsWithPattern(CBC_CommonBitMatrix* matrix, int32_t height, int32_t width, int32_t startRow, int32_t startColumn, int32_t* pattern, int32_t patternLength);
    static CFX_Int32Array* findGuardPattern(CBC_CommonBitMatrix* matrix, int32_t column, int32_t row, int32_t width, FX_BOOL whiteFirst, int32_t* pattern, int32_t patternLength, CFX_Int32Array &counters);
    static int32_t patternMatchVariance(CFX_Int32Array &counters, int32_t* pattern, int32_t maxIndividualVariance);
};
#endif