summaryrefslogtreecommitdiff
path: root/xfa/src/fxbarcode/qrcode/BC_QRGridSampler.cpp
blob: 088b3cbd7cf577b3acc40ce1045357ea4e70ec3b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
// 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
// Original code is licensed as follows:
/*
 * Copyright 2007 ZXing authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "xfa/src/fxbarcode/barcode.h"
#include "xfa/src/fxbarcode/common/BC_CommonPerspectiveTransform.h"
#include "xfa/src/fxbarcode/common/BC_CommonBitMatrix.h"
#include "xfa/src/fxbarcode/qrcode/BC_QRGridSampler.h"
CBC_QRGridSampler CBC_QRGridSampler::m_gridSampler;
CBC_QRGridSampler::CBC_QRGridSampler() {}
CBC_QRGridSampler::~CBC_QRGridSampler() {}
CBC_QRGridSampler& CBC_QRGridSampler::GetInstance() {
  return m_gridSampler;
}
void CBC_QRGridSampler::CheckAndNudgePoints(CBC_CommonBitMatrix* image,
                                            CFX_FloatArray* points,
                                            int32_t& e) {
  int32_t width = image->GetWidth();
  int32_t height = image->GetHeight();
  FX_BOOL nudged = TRUE;
  int32_t offset;
  for (offset = 0; offset < points->GetSize() && nudged; offset += 2) {
    int32_t x = (int32_t)(*points)[offset];
    int32_t y = (int32_t)(*points)[offset + 1];
    if (x < -1 || x > width || y < -1 || y > height) {
      e = BCExceptionRead;
      BC_EXCEPTION_CHECK_ReturnVoid(e);
    }
    nudged = FALSE;
    if (x == -1) {
      (*points)[offset] = 0.0f;
      nudged = TRUE;
    } else if (x == width) {
      (*points)[offset] = (FX_FLOAT)(width - 1);
      nudged = TRUE;
    }
    if (y == -1) {
      (*points)[offset + 1] = 0.0f;
      nudged = TRUE;
    } else if (y == height) {
      (*points)[offset + 1] = (FX_FLOAT)(height - 1);
      nudged = TRUE;
    }
  }
  nudged = TRUE;
  for (offset = (*points).GetSize() - 2; offset >= 0 && nudged; offset -= 2) {
    int32_t x = (int32_t)(*points)[offset];
    int32_t y = (int32_t)(*points)[offset + 1];
    if (x < -1 || x > width || y < -1 || y > height) {
      e = BCExceptionRead;
      BC_EXCEPTION_CHECK_ReturnVoid(e);
    }
    nudged = FALSE;
    if (x == -1) {
      (*points)[offset] = 0.0f;
      nudged = TRUE;
    } else if (x == width) {
      (*points)[offset] = (FX_FLOAT)(width - 1);
      nudged = TRUE;
    }
    if (y == -1) {
      (*points)[offset + 1] = 0.0f;
      nudged = TRUE;
    } else if (y == height) {
      (*points)[offset + 1] = (FX_FLOAT)(height - 1);
      nudged = TRUE;
    }
  }
}
CBC_CommonBitMatrix* CBC_QRGridSampler::SampleGrid(CBC_CommonBitMatrix* image,
                                                   int32_t dimensionX,
                                                   int32_t dimensionY,
                                                   FX_FLOAT p1ToX,
                                                   FX_FLOAT p1ToY,
                                                   FX_FLOAT p2ToX,
                                                   FX_FLOAT p2ToY,
                                                   FX_FLOAT p3ToX,
                                                   FX_FLOAT p3ToY,
                                                   FX_FLOAT p4ToX,
                                                   FX_FLOAT p4ToY,
                                                   FX_FLOAT p1FromX,
                                                   FX_FLOAT p1FromY,
                                                   FX_FLOAT p2FromX,
                                                   FX_FLOAT p2FromY,
                                                   FX_FLOAT p3FromX,
                                                   FX_FLOAT p3FromY,
                                                   FX_FLOAT p4FromX,
                                                   FX_FLOAT p4FromY,
                                                   int32_t& e) {
  CBC_AutoPtr<CBC_CommonPerspectiveTransform> transform(
      CBC_CommonPerspectiveTransform::QuadrilateralToQuadrilateral(
          p1ToX, p1ToY, p2ToX, p2ToY, p3ToX, p3ToY, p4ToX, p4ToY, p1FromX,
          p1FromY, p2FromX, p2FromY, p3FromX, p3FromY, p4FromX, p4FromY));
  CBC_CommonBitMatrix* tempBitM = new CBC_CommonBitMatrix();
  tempBitM->Init(dimensionX, dimensionY);
  CBC_AutoPtr<CBC_CommonBitMatrix> bits(tempBitM);
  CFX_FloatArray points;
  points.SetSize(dimensionX << 1);
  for (int32_t y = 0; y < dimensionY; y++) {
    int32_t max = points.GetSize();
    FX_FLOAT iValue = (FX_FLOAT)(y + 0.5f);
    int32_t x;
    for (x = 0; x < max; x += 2) {
      points[x] = (FX_FLOAT)((x >> 1) + 0.5f);
      points[x + 1] = iValue;
    }
    transform->TransformPoints(&points);
    CheckAndNudgePoints(image, &points, e);
    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
    for (x = 0; x < max; x += 2) {
      if (image->Get((int32_t)points[x], (int32_t)points[x + 1])) {
        bits->Set(x >> 1, y);
      }
    }
  }
  return bits.release();
}