1 // Copyright 2014 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #ifndef _BC_DETECTOR_H_ 8 #define _BC_DETECTOR_H_ 9 class CBC_PDF417DetectorResult; 10 class CBC_BinaryBitmap; 11 class CBC_CommonBitMatrix; 12 class CBC_CommonBitArray; 13 class CBC_Detector { 14 public: 15 CBC_Detector(); 16 virtual ~CBC_Detector(); 17 static CBC_PDF417DetectorResult* detect(CBC_BinaryBitmap* image, 18 int32_t hints, 19 FX_BOOL multiple, 20 int32_t& e); 21 static void rotate180(CBC_CommonBitMatrix* bitMatrix); 22 static CBC_CommonBitArray* mirror(CBC_CommonBitArray* input, 23 CBC_CommonBitArray* result); 24 25 private: 26 static int32_t INDEXES_START_PATTERN[]; 27 static int32_t INDEXES_STOP_PATTERN[]; 28 static int32_t INTEGER_MATH_SHIFT; 29 static int32_t PATTERN_MATCH_RESULT_SCALE_FACTOR; 30 static int32_t MAX_AVG_VARIANCE; 31 static int32_t MAX_INDIVIDUAL_VARIANCE; 32 static int32_t START_PATTERN[]; 33 static int32_t STOP_PATTERN[]; 34 static int32_t MAX_PIXEL_DRIFT; 35 static int32_t MAX_PATTERN_DRIFT; 36 static int32_t SKIPPED_ROW_COUNT_MAX; 37 static int32_t ROW_STEP; 38 static int32_t BARCODE_MIN_HEIGHT; 39 static CFX_PtrArray* detect(FX_BOOL multiple, CBC_CommonBitMatrix* bitMatrix); 40 static CFX_PtrArray* findVertices(CBC_CommonBitMatrix* matrix, 41 int32_t startRow, 42 int32_t startColumn); 43 static void copyToResult(CFX_PtrArray* result, 44 CFX_PtrArray* tmpResult, 45 int32_t* destinationIndexes, 46 int32_t destinationLength); 47 static CFX_PtrArray* findRowsWithPattern(CBC_CommonBitMatrix* matrix, 48 int32_t height, 49 int32_t width, 50 int32_t startRow, 51 int32_t startColumn, 52 int32_t* pattern, 53 int32_t patternLength); 54 static CFX_Int32Array* findGuardPattern(CBC_CommonBitMatrix* matrix, 55 int32_t column, 56 int32_t row, 57 int32_t width, 58 FX_BOOL whiteFirst, 59 int32_t* pattern, 60 int32_t patternLength, 61 CFX_Int32Array& counters); 62 static int32_t patternMatchVariance(CFX_Int32Array& counters, 63 int32_t* pattern, 64 int32_t maxIndividualVariance); 65 }; 66 #endif 67
