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

   1 #ifndef __DETECTOR_H__\r
   2 #define __DETECTOR_H__\r
   3 \r
   4 /*\r
   5  *  Detector.h\r
   6  *  zxing\r
   7  *\r
   8  *  Copyright 2010 ZXing authors All rights reserved.\r
   9  *\r
  10  * Licensed under the Apache License, Version 2.0 (the "License");\r
  11  * you may not use this file except in compliance with the License.\r
  12  * You may obtain a copy of the License at\r
  13  *\r
  14  *      http://www.apache.org/licenses/LICENSE-2.0\r
  15  *\r
  16  * Unless required by applicable law or agreed to in writing, software\r
  17  * distributed under the License is distributed on an "AS IS" BASIS,\r
  18  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
  19  * See the License for the specific language governing permissions and\r
  20  * limitations under the License.\r
  21  */\r
  22 \r
  23 #include <zxing/common/Counted.h>\r
  24 #include <zxing/common/DetectorResult.h>\r
  25 #include <zxing/common/BitMatrix.h>\r
  26 #include <zxing/qrcode/detector/AlignmentPattern.h>\r
  27 #include <zxing/common/PerspectiveTransform.h>\r
  28 #include <zxing/ResultPointCallback.h>\r
  29 \r
  30 namespace zxing {\r
  31 \r
  32 class DecodeHints;\r
  33 \r
  34 namespace qrcode {\r
  35 \r
  36 class Detector : public Counted {\r
  37 private:\r
  38   Ref<BitMatrix> image_;\r
  39   Ref<ResultPointCallback> callback_;\r
  40 \r
  41 protected:\r
  42   Ref<BitMatrix> getImage();\r
  43 \r
  44   static Ref<BitMatrix> sampleGrid(Ref<BitMatrix> image, int dimension, Ref<PerspectiveTransform>);\r
  45   static int computeDimension(Ref<ResultPoint> topLeft, Ref<ResultPoint> topRight, Ref<ResultPoint> bottomLeft,\r
  46                               float moduleSize);\r
  47   float calculateModuleSize(Ref<ResultPoint> topLeft, Ref<ResultPoint> topRight, Ref<ResultPoint> bottomLeft);\r
  48   float calculateModuleSizeOneWay(Ref<ResultPoint> pattern, Ref<ResultPoint> otherPattern);\r
  49   float sizeOfBlackWhiteBlackRunBothWays(int fromX, int fromY, int toX, int toY);\r
  50   float sizeOfBlackWhiteBlackRun(int fromX, int fromY, int toX, int toY);\r
  51   Ref<AlignmentPattern> findAlignmentInRegion(float overallEstModuleSize, int estAlignmentX, int estAlignmentY,\r
  52       float allowanceFactor);\r
  53 public:\r
  54 \r
  55   virtual Ref<PerspectiveTransform> createTransform(Ref<ResultPoint> topLeft, Ref<ResultPoint> topRight, Ref <\r
  56       ResultPoint > bottomLeft, Ref<ResultPoint> alignmentPattern, int dimension);\r
  57 \r
  58   Detector(Ref<BitMatrix> image);\r
  59   Ref<DetectorResult> detect(DecodeHints const& hints);\r
  60 };\r
  61 }\r
  62 }\r
  63 \r
  64 #endif // __DETECTOR_H__\r