cpp/core/src/qrcode/detector/Detector.h

   1 #ifndef __DETECTOR_H__
   2 #define __DETECTOR_H__
   3
   4 /*
   5  *  Detector.h
   6  *  zxing
   7  *
   8  *  Created by Christian Brunschen on 14/05/2008.
   9  *  Copyright 2008 ZXing authors All rights reserved.
  10  *
  11  * Licensed under the Apache License, Version 2.0 (the "License");
  12  * you may not use this file except in compliance with the License.
  13  * You may obtain a copy of the License at
  14  *
  15  *      http://www.apache.org/licenses/LICENSE-2.0
  16  *
  17  * Unless required by applicable law or agreed to in writing, software
  18  * distributed under the License is distributed on an "AS IS" BASIS,
  19  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  20  * See the License for the specific language governing permissions and
  21  * limitations under the License.
  22  */
  23
  24 #include "../../common/Counted.h"
  25 #include "../../common/DetectorResult.h"
  26 #include "../../MonochromeBitmapSource.h"
  27 #include "AlignmentPattern.h"
  28
  29 namespace qrcode {
  30   namespace detector {
  31
  32     using namespace std;
  33     using namespace common;
  34
  35     class Detector : public Counted {
  36     private:
  37       Ref<MonochromeBitmapSource> image_;
  38       static Ref<BitMatrix> sampleGrid(Ref<MonochromeBitmapSource> image,
  39                                        Ref<ResultPoint> topLeft,
  40                                        Ref<ResultPoint> topRight,
  41                                        Ref<ResultPoint> bottomLeft,
  42                                        Ref<ResultPoint> alignmentPattern,
  43                                        int dimension);
  44       static int computeDimension(Ref<ResultPoint> topLeft,
  45                                   Ref<ResultPoint> topRight,
  46                                   Ref<ResultPoint> bottomLeft,
  47                                   float moduleSize);
  48       float calculateModuleSize(Ref<ResultPoint> topLeft,
  49                                 Ref<ResultPoint> topRight,
  50                                 Ref<ResultPoint> bottomLeft);
  51       float calculateModuleSizeOneWay(Ref<ResultPoint> pattern,
  52                                       Ref<ResultPoint> otherPattern);
  53       float sizeOfBlackWhiteBlackRunBothWays(int fromX, int fromY,
  54                                              int toX, int toY);
  55       float sizeOfBlackWhiteBlackRun(int fromX, int fromY,
  56                                      int toX, int toY);
  57       Ref<AlignmentPattern>  findAlignmentInRegion(float overallEstModuleSize,
  58                                                    int estAlignmentX,
  59                                                    int estAlignmentY,
  60                                                    float allowanceFactor);
  61     public:
  62       Detector(Ref<MonochromeBitmapSource> image);
  63       Ref<DetectorResult> detect();
  64     };
  65   }
  66 }
  67
  68 #endif // __DETECTOR_H__