Organize barcode codes into modules.

Previously all the files in barcode are lumped together.
The naming of some files are inconsistent,
leading to difficult understanding of the structure.
Now files are grouped based on different barcode type like in zxing.
This also matches what it looks like in other xfa folders.
The file names in each folder could be further modified to be consistent.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/842043002

1 files changed, 368 insertions, 0 deletions

diff --git a/xfa/src/fxbarcode/datamatrix/BC_DataMatrixDetector.cpp b/xfa/src/fxbarcode/datamatrix/BC_DataMatrixDetector.cpp
new file mode 100644
index 0000000000..12877c5c3a
--- /dev/null
+++ b/xfa/src/fxbarcode/datamatrix/BC_DataMatrixDetector.cpp
@@ -0,0 +1,368 @@
+// 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 2008 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 "../barcode.h"

+#include "../BC_ResultPoint.h"

+#include "../common/BC_WhiteRectangleDetector.h"

+#include "../common/BC_CommonBitMatrix.h"

+#include "../qrcode/BC_QRFinderPatternFinder.h"

+#include "../qrcode/BC_QRDetectorResult.h"

+#include "../qrcode/BC_QRGridSampler.h"

+#include "BC_DataMatrixDetector.h"

+const FX_INT32 CBC_DataMatrixDetector::INTEGERS[5] = {0, 1, 2, 3, 4};

+CBC_DataMatrixDetector::CBC_DataMatrixDetector(CBC_CommonBitMatrix *image):

+    m_image(image), m_rectangleDetector(NULL)

+{

+}

+void CBC_DataMatrixDetector::Init(FX_INT32 &e)

+{

+    m_rectangleDetector = FX_NEW CBC_WhiteRectangleDetector(m_image);

+    m_rectangleDetector->Init(e);

+    BC_EXCEPTION_CHECK_ReturnVoid(e);

+}

+CBC_DataMatrixDetector::~CBC_DataMatrixDetector()

+{

+    if(m_rectangleDetector != NULL) {

+        delete m_rectangleDetector;

+    }

+    m_rectangleDetector = NULL;

+}

+inline FX_BOOL ResultPointsAndTransitionsComparator(FX_LPVOID a, FX_LPVOID b)

+{

+    return ((CBC_ResultPointsAndTransitions *)b)->GetTransitions() > ((CBC_ResultPointsAndTransitions *)a)->GetTransitions();

+}

+CBC_QRDetectorResult *CBC_DataMatrixDetector::Detect(FX_INT32 &e)

+{

+    CFX_PtrArray* cornerPoints = m_rectangleDetector->Detect(e);

+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    CBC_ResultPoint *pointA = (CBC_ResultPoint*)(*cornerPoints)[0];

+    CBC_ResultPoint *pointB = (CBC_ResultPoint*)(*cornerPoints)[1];

+    CBC_ResultPoint *pointC = (CBC_ResultPoint*)(*cornerPoints)[2];

+    CBC_ResultPoint *pointD = (CBC_ResultPoint*)(*cornerPoints)[3];

+    delete cornerPoints;

+    cornerPoints = NULL;

+    CFX_PtrArray transitions;

+    transitions.Add(TransitionsBetween(pointA, pointB));

+    transitions.Add(TransitionsBetween(pointA, pointC));

+    transitions.Add(TransitionsBetween(pointB, pointD));

+    transitions.Add(TransitionsBetween(pointC, pointD));

+    BC_FX_PtrArray_Sort(transitions, &ResultPointsAndTransitionsComparator);

+    delete ( (CBC_ResultPointsAndTransitions *)transitions[2] );

+    delete ( (CBC_ResultPointsAndTransitions *)transitions[3] );

+    CBC_ResultPointsAndTransitions *lSideOne = (CBC_ResultPointsAndTransitions*)transitions[0];

+    CBC_ResultPointsAndTransitions *lSideTwo = (CBC_ResultPointsAndTransitions*)transitions[1];

+    CFX_MapPtrTemplate<CBC_ResultPoint*, FX_INT32> pointCount;

+    Increment(pointCount, lSideOne->GetFrom());

+    Increment(pointCount, lSideOne->GetTo());

+    Increment(pointCount, lSideTwo->GetFrom());

+    Increment(pointCount, lSideTwo->GetTo());

+    delete ( (CBC_ResultPointsAndTransitions *)transitions[1] );

+    delete ( (CBC_ResultPointsAndTransitions *)transitions[0] );

+    transitions.RemoveAll();

+    CBC_ResultPoint *maybeTopLeft = NULL;

+    CBC_ResultPoint *bottomLeft = NULL;

+    CBC_ResultPoint *maybeBottomRight = NULL;

+    FX_POSITION itBegin = pointCount.GetStartPosition();

+    while(itBegin != NULL) {

+        CBC_ResultPoint *key = 0;

+        FX_INT32 value = 0;

+        pointCount.GetNextAssoc(itBegin, key, value);

+        if(value == 2) {

+            bottomLeft = key;

+        } else {

+            if (maybeBottomRight == NULL) {

+                maybeBottomRight = key;

+            } else {

+                maybeTopLeft = key;

+            }

+        }

+    }

+    if (maybeTopLeft == NULL || bottomLeft == NULL || maybeBottomRight == NULL) {

+        delete pointA;

+        delete pointB;

+        delete pointC;

+        delete pointD;

+        e = BCExceptionNotFound;

+        return NULL;

+    }

+    CFX_PtrArray corners;

+    corners.SetSize(3);

+    corners[0] = maybeTopLeft;

+    corners[1] = bottomLeft;

+    corners[2] = maybeBottomRight;

+    OrderBestPatterns(&corners);

+    CBC_ResultPoint *bottomRight = (CBC_ResultPoint*)corners[0];

+    bottomLeft = (CBC_ResultPoint*)corners[1];

+    CBC_ResultPoint *topLeft = (CBC_ResultPoint*)corners[2];

+    CBC_ResultPoint *topRight = NULL;

+    FX_INT32 value;

+    if (!pointCount.Lookup(pointA, value)) {

+        topRight = pointA;

+    } else if (!pointCount.Lookup(pointB, value)) {

+        topRight = pointB;

+    } else if (!pointCount.Lookup(pointC, value)) {

+        topRight = pointC;

+    } else {

+        topRight = pointD;

+    }

+    FX_INT32 dimensionTop = CBC_AutoPtr<CBC_ResultPointsAndTransitions>(TransitionsBetween(topLeft, topRight))->GetTransitions();

+    FX_INT32 dimensionRight = CBC_AutoPtr<CBC_ResultPointsAndTransitions>(TransitionsBetween(bottomRight, topRight))->GetTransitions();

+    if ((dimensionTop & 0x01) == 1) {

+        dimensionTop++;

+    }

+    dimensionTop += 2;

+    if ((dimensionRight & 0x01) == 1) {

+        dimensionRight++;

+    }

+    dimensionRight += 2;

+    CBC_AutoPtr<CBC_CommonBitMatrix> bits(NULL);

+    CBC_AutoPtr<CBC_ResultPoint> correctedTopRight(NULL);

+    if (4 * dimensionTop >= 7 * dimensionRight || 4 * dimensionRight >= 7 * dimensionTop) {

+        correctedTopRight =

+            CBC_AutoPtr<CBC_ResultPoint>(CorrectTopRightRectangular(bottomLeft, bottomRight, topLeft, topRight,

+                                         dimensionTop, dimensionRight));

+        if (correctedTopRight.get() == NULL) {

+            correctedTopRight = CBC_AutoPtr<CBC_ResultPoint>(topRight);

+        } else {

+            delete topRight;

+            topRight = NULL;

+        }

+        dimensionTop = CBC_AutoPtr<CBC_ResultPointsAndTransitions>(TransitionsBetween(topLeft, correctedTopRight.get()))->GetTransitions();

+        dimensionRight = CBC_AutoPtr<CBC_ResultPointsAndTransitions>(TransitionsBetween(bottomRight, correctedTopRight.get()))->GetTransitions();

+        if ((dimensionTop & 0x01) == 1) {

+            dimensionTop++;

+        }

+        if ((dimensionRight & 0x01) == 1) {

+            dimensionRight++;

+        }

+        bits = CBC_AutoPtr<CBC_CommonBitMatrix>(SampleGrid(m_image, topLeft, bottomLeft, bottomRight,

+                                                correctedTopRight.get(), dimensionTop, dimensionRight, e));

+        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    } else {

+        FX_INT32 dimension = FX_MIN(dimensionRight, dimensionTop);

+        correctedTopRight = CBC_AutoPtr<CBC_ResultPoint>(CorrectTopRight(bottomLeft, bottomRight,

+                            topLeft, topRight, dimension));

+        if (correctedTopRight.get() == NULL) {

+            correctedTopRight = CBC_AutoPtr<CBC_ResultPoint>(topRight);

+        } else {

+            delete topRight;

+            topRight = NULL;

+        }

+        FX_INT32 dimensionCorrected = FX_MAX(CBC_AutoPtr<CBC_ResultPointsAndTransitions>(TransitionsBetween(topLeft, correctedTopRight.get()))->GetTransitions(),

+                                             CBC_AutoPtr<CBC_ResultPointsAndTransitions>(TransitionsBetween(bottomRight, correctedTopRight.get()))->GetTransitions());

+        dimensionCorrected++;

+        if ((dimensionCorrected & 0x01) == 1) {

+            dimensionCorrected++;

+        }

+        bits = CBC_AutoPtr<CBC_CommonBitMatrix>(SampleGrid(m_image,

+                                                topLeft,

+                                                bottomLeft,

+                                                bottomRight,

+                                                correctedTopRight.get(),

+                                                dimensionCorrected,

+                                                dimensionCorrected, e));

+        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    }

+    CFX_PtrArray *result = FX_NEW CFX_PtrArray;

+    result->SetSize(4);

+    result->Add(topLeft);

+    result->Add(bottomLeft);

+    result->Add(bottomRight);

+    result->Add(correctedTopRight.release());

+    return FX_NEW CBC_QRDetectorResult(bits.release(), result);

+}

+CBC_ResultPoint *CBC_DataMatrixDetector::CorrectTopRightRectangular(CBC_ResultPoint *bottomLeft, CBC_ResultPoint *bottomRight, CBC_ResultPoint *topLeft, CBC_ResultPoint *topRight, FX_INT32 dimensionTop, FX_INT32 dimensionRight)

+{

+    FX_FLOAT corr = Distance(bottomLeft, bottomRight) / (FX_FLOAT)dimensionTop;

+    FX_INT32 norm = Distance(topLeft, topRight);

+    FX_FLOAT cos = (topRight->GetX() - topLeft->GetX()) / norm;

+    FX_FLOAT sin = (topRight->GetY() - topLeft->GetY()) / norm;

+    CBC_AutoPtr<CBC_ResultPoint> c1(FX_NEW CBC_ResultPoint(topRight->GetX() + corr * cos, topRight->GetY() + corr * sin));

+    corr = Distance(bottomLeft, topLeft) / (FX_FLOAT)dimensionRight;

+    norm = Distance(bottomRight, topRight);

+    cos = (topRight->GetX() - bottomRight->GetX()) / norm;

+    sin = (topRight->GetY() - bottomRight->GetY()) / norm;

+    CBC_AutoPtr<CBC_ResultPoint> c2(FX_NEW CBC_ResultPoint(topRight->GetX() + corr * cos, topRight->GetY() + corr * sin));

+    if (!IsValid(c1.get())) {

+        if (IsValid(c2.get())) {

+            return c2.release();

+        }

+        return NULL;

+    } else if (!IsValid(c2.get())) {

+        return c1.release();

+    }

+    FX_INT32 l1 = FXSYS_abs(dimensionTop - CBC_AutoPtr<CBC_ResultPointsAndTransitions>(TransitionsBetween(topLeft, c1.get()))->GetTransitions()) +

+                  FXSYS_abs(dimensionRight - CBC_AutoPtr<CBC_ResultPointsAndTransitions>(TransitionsBetween(bottomRight, c1.get()))->GetTransitions());

+    FX_INT32 l2 = FXSYS_abs(dimensionTop - CBC_AutoPtr<CBC_ResultPointsAndTransitions>(TransitionsBetween(topLeft, c2.get()))->GetTransitions()) +

+                  FXSYS_abs(dimensionRight - CBC_AutoPtr<CBC_ResultPointsAndTransitions>(TransitionsBetween(bottomRight, c2.get()))->GetTransitions());

+    if (l1 <= l2) {

+        return c1.release();

+    }

+    return c2.release();

+}

+CBC_ResultPoint *CBC_DataMatrixDetector::CorrectTopRight(CBC_ResultPoint *bottomLeft, CBC_ResultPoint *bottomRight, CBC_ResultPoint *topLeft, CBC_ResultPoint *topRight, FX_INT32 dimension)

+{

+    FX_FLOAT corr = Distance(bottomLeft, bottomRight) / (FX_FLOAT) dimension;

+    FX_INT32 norm = Distance(topLeft, topRight);

+    FX_FLOAT cos = (topRight->GetX() - topLeft->GetX()) / norm;

+    FX_FLOAT sin = (topRight->GetY() - topLeft->GetY()) / norm;

+    CBC_AutoPtr<CBC_ResultPoint> c1(FX_NEW CBC_ResultPoint(topRight->GetX() + corr * cos, topRight->GetY() + corr * sin));

+    corr = Distance(bottomLeft, bottomRight) / (FX_FLOAT) dimension;

+    norm = Distance(bottomRight, topRight);

+    cos = (topRight->GetX() - bottomRight->GetX()) / norm;

+    sin = (topRight->GetY() - bottomRight->GetY()) / norm;

+    CBC_AutoPtr<CBC_ResultPoint> c2(FX_NEW CBC_ResultPoint(topRight->GetX() + corr * cos, topRight->GetY() + corr * sin));

+    if (!IsValid(c1.get())) {

+        if (IsValid(c2.get())) {

+            return c2.release();

+        }

+        return NULL;

+    } else if (!IsValid(c2.get())) {

+        return c1.release();

+    }

+    FX_INT32 l1 = FXSYS_abs(CBC_AutoPtr<CBC_ResultPointsAndTransitions>(TransitionsBetween(topLeft, c1.get()))->GetTransitions() -

+                            CBC_AutoPtr<CBC_ResultPointsAndTransitions>(TransitionsBetween(bottomRight, c1.get()))->GetTransitions());

+    FX_INT32 l2 = FXSYS_abs(CBC_AutoPtr<CBC_ResultPointsAndTransitions>(TransitionsBetween(topLeft, c2.get()))->GetTransitions() -

+                            CBC_AutoPtr<CBC_ResultPointsAndTransitions>(TransitionsBetween(bottomRight, c2.get()))->GetTransitions());

+    return l1 <= l2 ? c1.release() : c2.release();

+}

+FX_BOOL CBC_DataMatrixDetector::IsValid(CBC_ResultPoint *p)

+{

+    return p->GetX() >= 0 && p->GetX() < m_image->GetWidth() && p->GetY() > 0 && p->GetY() < m_image->GetHeight();

+}

+FX_INT32 CBC_DataMatrixDetector::Round(FX_FLOAT d)

+{

+    return (FX_INT32) (d + 0.5f);

+}

+FX_INT32 CBC_DataMatrixDetector::Distance(CBC_ResultPoint *a, CBC_ResultPoint *b)

+{

+    return Round((FX_FLOAT) sqrt((a->GetX() - b->GetX())

+                                 * (a->GetX() - b->GetX()) + (a->GetY() - b->GetY())

+                                 * (a->GetY() - b->GetY())));

+}

+void CBC_DataMatrixDetector::Increment(CFX_MapPtrTemplate<CBC_ResultPoint*, FX_INT32> &table, CBC_ResultPoint *key)

+{

+    FX_INT32 value;

+    if(table.Lookup(key, value)) {

+        table.SetAt(key, INTEGERS[value + 1]);

+    } else {

+        table.SetAt(key, INTEGERS[1]);

+    }

+}

+CBC_CommonBitMatrix *CBC_DataMatrixDetector::SampleGrid(CBC_CommonBitMatrix *image,

+        CBC_ResultPoint *topLeft,

+        CBC_ResultPoint *bottomLeft,

+        CBC_ResultPoint *bottomRight,

+        CBC_ResultPoint *topRight,

+        FX_INT32 dimensionX, FX_INT32 dimensionY, FX_INT32 &e)

+{

+    CBC_QRGridSampler &sampler = CBC_QRGridSampler::GetInstance();

+    CBC_CommonBitMatrix* cbm = sampler.SampleGrid(image,

+                               dimensionX,

+                               dimensionY,

+                               0.5f,

+                               0.5f,

+                               dimensionX - 0.5f,

+                               0.5f,

+                               dimensionX - 0.5f,

+                               dimensionY - 0.5f,

+                               0.5f,

+                               dimensionY - 0.5f,

+                               topLeft->GetX(),

+                               topLeft->GetY(),

+                               topRight->GetX(),

+                               topRight->GetY(),

+                               bottomRight->GetX(),

+                               bottomRight->GetY(),

+                               bottomLeft->GetX(),

+                               bottomLeft->GetY(), e);

+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    return cbm;

+}

+CBC_ResultPointsAndTransitions *CBC_DataMatrixDetector::TransitionsBetween(CBC_ResultPoint *from, CBC_ResultPoint *to)

+{

+    FX_INT32 fromX = (FX_INT32) from->GetX();

+    FX_INT32 fromY = (FX_INT32) from->GetY();

+    FX_INT32 toX = (FX_INT32) to->GetX();

+    FX_INT32 toY = (FX_INT32) to->GetY();

+    FX_BOOL steep = FXSYS_abs(toY - fromY) > FXSYS_abs(toX - fromX);

+    if (steep) {

+        FX_INT32 temp = fromX;

+        fromX = fromY;

+        fromY = temp;

+        temp = toX;

+        toX = toY;

+        toY = temp;

+    }

+    FX_INT32 dx = FXSYS_abs(toX - fromX);

+    FX_INT32 dy = FXSYS_abs(toY - fromY);

+    FX_INT32 error = -dx >> 1;

+    FX_INT32 ystep = fromY < toY ? 1 : -1;

+    FX_INT32 xstep = fromX < toX ? 1 : -1;

+    FX_INT32 transitions = 0;

+    FX_BOOL inBlack = m_image->Get(steep ? fromY : fromX, steep ? fromX : fromY);

+    for (FX_INT32 x = fromX, y = fromY; x != toX; x += xstep) {

+        FX_BOOL isBlack = m_image->Get(steep ? y : x, steep ? x : y);

+        if (isBlack != inBlack) {

+            transitions++;

+            inBlack = isBlack;

+        }

+        error += dy;

+        if (error > 0) {

+            if (y == toY) {

+                break;

+            }

+            y += ystep;

+            error -= dx;

+        }

+    }

+    return FX_NEW CBC_ResultPointsAndTransitions(from, to, transitions);

+}

+void CBC_DataMatrixDetector::OrderBestPatterns(CFX_PtrArray *patterns)

+{

+    FX_FLOAT abDistance = (FX_FLOAT)Distance((CBC_ResultPoint*)(*patterns)[0], (CBC_ResultPoint*)(*patterns)[1]);

+    FX_FLOAT bcDistance = (FX_FLOAT)Distance((CBC_ResultPoint*)(*patterns)[1], (CBC_ResultPoint*)(*patterns)[2]);

+    FX_FLOAT acDistance = (FX_FLOAT)Distance((CBC_ResultPoint*)(*patterns)[0], (CBC_ResultPoint*)(*patterns)[2]);

+    CBC_ResultPoint *topLeft, *topRight, *bottomLeft;

+    if (bcDistance >= abDistance && bcDistance >= acDistance) {

+        topLeft = (CBC_ResultPoint*)(*patterns)[0];

+        topRight = (CBC_ResultPoint*)(*patterns)[1];

+        bottomLeft = (CBC_ResultPoint*)(*patterns)[2];

+    } else if (acDistance >= bcDistance && acDistance >= abDistance) {

+        topLeft = (CBC_ResultPoint*)(*patterns)[1];

+        topRight = (CBC_ResultPoint*)(*patterns)[0];

+        bottomLeft = (CBC_ResultPoint*)(*patterns)[2];

+    } else {

+        topLeft = (CBC_ResultPoint*)(*patterns)[2];

+        topRight = (CBC_ResultPoint*)(*patterns)[0];

+        bottomLeft = (CBC_ResultPoint*)(*patterns)[1];

+    }

+    if ((bottomLeft->GetY() - topLeft->GetY()) * (topRight->GetX() - topLeft->GetX()) < (bottomLeft->GetX()

+            - topLeft->GetX()) * (topRight->GetY() - topLeft->GetY())) {

+        CBC_ResultPoint *temp = topRight;

+        topRight = bottomLeft;

+        bottomLeft = temp;

+    }

+    (*patterns)[0] = bottomLeft;

+    (*patterns)[1] = topLeft;

+    (*patterns)[2] = topRight;

+}