Added a project written on Qt framework for Symbian and added tutorials for both...
[zxing.git] / symbian / QQrDecoder / zxing / qrcode / detector / AlignmentPatternFinder.h
1 #ifndef __ALIGNMENT_PATTERN_FINDER_H__
2 #define __ALIGNMENT_PATTERN_FINDER_H__
3
4 /*
5  *  AlignmentPatternFinder.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 "AlignmentPattern.h"
25 #include <zxing/common/Counted.h>
26 #include <zxing/common/BitMatrix.h>
27 #include <vector>
28
29 namespace zxing {
30 namespace qrcode {
31
32 class AlignmentPatternFinder : public Counted {
33 private:
34   static int CENTER_QUORUM;
35   static int MIN_SKIP;
36   static int MAX_MODULES;
37
38   Ref<BitMatrix> image_;
39   std::vector<AlignmentPattern *> *possibleCenters_;
40   size_t startX_;
41   size_t startY_;
42   size_t width_;
43   size_t height_;
44   float moduleSize_;
45
46   static float centerFromEnd(std::valarray<int> &stateCount, int end);
47   bool foundPatternCross(std::valarray<int> &stateCount);
48
49   float crossCheckVertical(size_t startI, size_t centerJ, int maxCount, int originalStateCountTotal);
50
51   Ref<AlignmentPattern> handlePossibleCenter(std::valarray<int> &stateCount, size_t i, size_t j);
52
53 public:
54   AlignmentPatternFinder(Ref<BitMatrix> image, size_t startX, size_t startY, size_t width, size_t height,
55                          float moduleSize);
56   ~AlignmentPatternFinder();
57   Ref<AlignmentPattern> find();
58 };
59 }
60 }
61
62 #endif // __ALIGNMENT_PATTERN_FINDER_H__