Remove barcode reading code.

We never read barcodes, we only write them. Remove code related to barcode
reading.

Review-Url: https://codereview.chromium.org/2071633002

1 files changed, 0 insertions, 415 deletions

diff --git a/xfa/fxbarcode/datamatrix/BC_DataMatrixDetector.cpp b/xfa/fxbarcode/datamatrix/BC_DataMatrixDetector.cpp
deleted file mode 100644
index d34515310e..0000000000
--- a/xfa/fxbarcode/datamatrix/BC_DataMatrixDetector.cpp
+++ /dev/null
@@ -1,415 +0,0 @@
-// 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 "xfa/fxbarcode/datamatrix/BC_DataMatrixDetector.h"
-
-#include <algorithm>
-#include <memory>
-
-#include "xfa/fxbarcode/BC_ResultPoint.h"
-#include "xfa/fxbarcode/common/BC_CommonBitMatrix.h"
-#include "xfa/fxbarcode/common/BC_WhiteRectangleDetector.h"
-#include "xfa/fxbarcode/qrcode/BC_QRDetectorResult.h"
-#include "xfa/fxbarcode/qrcode/BC_QRFinderPatternFinder.h"
-#include "xfa/fxbarcode/qrcode/BC_QRGridSampler.h"
-#include "xfa/fxbarcode/utils.h"
-
-const int32_t CBC_DataMatrixDetector::INTEGERS[5] = {0, 1, 2, 3, 4};
-CBC_DataMatrixDetector::CBC_DataMatrixDetector(CBC_CommonBitMatrix* image)
-    : m_image(image), m_rectangleDetector(nullptr) {}
-void CBC_DataMatrixDetector::Init(int32_t& e) {
-  m_rectangleDetector = new CBC_WhiteRectangleDetector(m_image);
-  m_rectangleDetector->Init(e);
-  BC_EXCEPTION_CHECK_ReturnVoid(e);
-}
-CBC_DataMatrixDetector::~CBC_DataMatrixDetector() {
-  delete m_rectangleDetector;
-}
-
-CBC_QRDetectorResult* CBC_DataMatrixDetector::Detect(int32_t& e) {
-  CFX_ArrayTemplate<CBC_ResultPoint*>* cornerPoints =
-      m_rectangleDetector->Detect(e);
-  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  CBC_ResultPoint* pointA = (*cornerPoints)[0];
-  CBC_ResultPoint* pointB = (*cornerPoints)[1];
-  CBC_ResultPoint* pointC = (*cornerPoints)[2];
-  CBC_ResultPoint* pointD = (*cornerPoints)[3];
-  delete cornerPoints;
-
-  CFX_ArrayTemplate<CBC_ResultPointsAndTransitions*> transitions;
-  transitions.Add(TransitionsBetween(pointA, pointB));
-  transitions.Add(TransitionsBetween(pointA, pointC));
-  transitions.Add(TransitionsBetween(pointB, pointD));
-  transitions.Add(TransitionsBetween(pointC, pointD));
-  std::sort(transitions.GetData(),
-            transitions.GetData() + transitions.GetSize(),
-            [](const CBC_ResultPointsAndTransitions* a,
-               const CBC_ResultPointsAndTransitions* b) {
-              return a->GetTransitions() < b->GetTransitions();
-            });
-  delete transitions[2];
-  delete transitions[3];
-
-  CBC_ResultPointsAndTransitions* lSideOne = transitions[0];
-  CBC_ResultPointsAndTransitions* lSideTwo = transitions[1];
-  CFX_MapPtrTemplate<CBC_ResultPoint*, int32_t> pointCount;
-  Increment(pointCount, lSideOne->GetFrom());
-  Increment(pointCount, lSideOne->GetTo());
-  Increment(pointCount, lSideTwo->GetFrom());
-  Increment(pointCount, lSideTwo->GetTo());
-  delete transitions[1];
-  delete transitions[0];
-  transitions.RemoveAll();
-  CBC_ResultPoint* maybeTopLeft = nullptr;
-  CBC_ResultPoint* bottomLeft = nullptr;
-  CBC_ResultPoint* maybeBottomRight = nullptr;
-  FX_POSITION itBegin = pointCount.GetStartPosition();
-  while (itBegin) {
-    CBC_ResultPoint* key = 0;
-    int32_t value = 0;
-    pointCount.GetNextAssoc(itBegin, key, value);
-    if (value == 2) {
-      bottomLeft = key;
-    } else {
-      if (maybeBottomRight) {
-        maybeTopLeft = key;
-      } else {
-        maybeBottomRight = key;
-      }
-    }
-  }
-  if (!maybeTopLeft || !bottomLeft || !maybeBottomRight) {
-    delete pointA;
-    delete pointB;
-    delete pointC;
-    delete pointD;
-    e = BCExceptionNotFound;
-    return nullptr;
-  }
-  CFX_ArrayTemplate<CBC_ResultPoint*> corners;
-  corners.SetSize(3);
-  corners[0] = maybeTopLeft;
-  corners[1] = bottomLeft;
-  corners[2] = maybeBottomRight;
-  OrderBestPatterns(&corners);
-  CBC_ResultPoint* bottomRight = corners[0];
-  bottomLeft = corners[1];
-  CBC_ResultPoint* topLeft = corners[2];
-  CBC_ResultPoint* topRight = nullptr;
-  int32_t 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;
-  }
-  int32_t dimensionTop = std::unique_ptr<CBC_ResultPointsAndTransitions>(
-                             TransitionsBetween(topLeft, topRight))
-                             ->GetTransitions();
-  int32_t dimensionRight = std::unique_ptr<CBC_ResultPointsAndTransitions>(
-                               TransitionsBetween(bottomRight, topRight))
-                               ->GetTransitions();
-  if ((dimensionTop & 0x01) == 1) {
-    dimensionTop++;
-  }
-  dimensionTop += 2;
-  if ((dimensionRight & 0x01) == 1) {
-    dimensionRight++;
-  }
-  dimensionRight += 2;
-  std::unique_ptr<CBC_CommonBitMatrix> bits;
-  std::unique_ptr<CBC_ResultPoint> correctedTopRight;
-  if (4 * dimensionTop >= 7 * dimensionRight ||
-      4 * dimensionRight >= 7 * dimensionTop) {
-    correctedTopRight.reset(
-        CorrectTopRightRectangular(bottomLeft, bottomRight, topLeft, topRight,
-                                   dimensionTop, dimensionRight));
-    if (!correctedTopRight.get()) {
-      correctedTopRight.reset(topRight);
-    } else {
-      delete topRight;
-      topRight = nullptr;
-    }
-    dimensionTop = std::unique_ptr<CBC_ResultPointsAndTransitions>(
-                       TransitionsBetween(topLeft, correctedTopRight.get()))
-                       ->GetTransitions();
-    dimensionRight =
-        std::unique_ptr<CBC_ResultPointsAndTransitions>(
-            TransitionsBetween(bottomRight, correctedTopRight.get()))
-            ->GetTransitions();
-    if ((dimensionTop & 0x01) == 1) {
-      dimensionTop++;
-    }
-    if ((dimensionRight & 0x01) == 1) {
-      dimensionRight++;
-    }
-    bits.reset(SampleGrid(m_image, topLeft, bottomLeft, bottomRight,
-                          correctedTopRight.get(), dimensionTop, dimensionRight,
-                          e));
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  } else {
-    int32_t dimension = std::min(dimensionRight, dimensionTop);
-    correctedTopRight.reset(
-        CorrectTopRight(bottomLeft, bottomRight, topLeft, topRight, dimension));
-    if (!correctedTopRight.get()) {
-      correctedTopRight.reset(topRight);
-    } else {
-      delete topRight;
-      topRight = nullptr;
-    }
-    int32_t dimensionCorrected =
-        std::max(std::unique_ptr<CBC_ResultPointsAndTransitions>(
-                     TransitionsBetween(topLeft, correctedTopRight.get()))
-                     ->GetTransitions(),
-                 std::unique_ptr<CBC_ResultPointsAndTransitions>(
-                     TransitionsBetween(bottomRight, correctedTopRight.get()))
-                     ->GetTransitions());
-    dimensionCorrected++;
-    if ((dimensionCorrected & 0x01) == 1) {
-      dimensionCorrected++;
-    }
-    bits.reset(SampleGrid(m_image, topLeft, bottomLeft, bottomRight,
-                          correctedTopRight.get(), dimensionCorrected,
-                          dimensionCorrected, e));
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  }
-  CFX_ArrayTemplate<CBC_ResultPoint*>* result =
-      new CFX_ArrayTemplate<CBC_ResultPoint*>();
-  result->SetSize(4);
-  result->Add(topLeft);
-  result->Add(bottomLeft);
-  result->Add(bottomRight);
-  result->Add(correctedTopRight.release());
-  return new CBC_QRDetectorResult(bits.release(), result);
-}
-CBC_ResultPoint* CBC_DataMatrixDetector::CorrectTopRightRectangular(
-    CBC_ResultPoint* bottomLeft,
-    CBC_ResultPoint* bottomRight,
-    CBC_ResultPoint* topLeft,
-    CBC_ResultPoint* topRight,
-    int32_t dimensionTop,
-    int32_t dimensionRight) {
-  FX_FLOAT corr = Distance(bottomLeft, bottomRight) / (FX_FLOAT)dimensionTop;
-  int32_t norm = Distance(topLeft, topRight);
-  FX_FLOAT cos = (topRight->GetX() - topLeft->GetX()) / norm;
-  FX_FLOAT sin = (topRight->GetY() - topLeft->GetY()) / norm;
-  std::unique_ptr<CBC_ResultPoint> c1(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;
-  std::unique_ptr<CBC_ResultPoint> c2(new CBC_ResultPoint(
-      topRight->GetX() + corr * cos, topRight->GetY() + corr * sin));
-  if (!IsValid(c1.get())) {
-    if (IsValid(c2.get())) {
-      return c2.release();
-    }
-    return nullptr;
-  } else if (!IsValid(c2.get())) {
-    return c1.release();
-  }
-  int32_t l1 = FXSYS_abs(dimensionTop -
-                         std::unique_ptr<CBC_ResultPointsAndTransitions>(
-                             TransitionsBetween(topLeft, c1.get()))
-                             ->GetTransitions()) +
-               FXSYS_abs(dimensionRight -
-                         std::unique_ptr<CBC_ResultPointsAndTransitions>(
-                             TransitionsBetween(bottomRight, c1.get()))
-                             ->GetTransitions());
-  int32_t l2 = FXSYS_abs(dimensionTop -
-                         std::unique_ptr<CBC_ResultPointsAndTransitions>(
-                             TransitionsBetween(topLeft, c2.get()))
-                             ->GetTransitions()) +
-               FXSYS_abs(dimensionRight -
-                         std::unique_ptr<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,
-    int32_t dimension) {
-  FX_FLOAT corr = Distance(bottomLeft, bottomRight) / (FX_FLOAT)dimension;
-  int32_t norm = Distance(topLeft, topRight);
-  FX_FLOAT cos = (topRight->GetX() - topLeft->GetX()) / norm;
-  FX_FLOAT sin = (topRight->GetY() - topLeft->GetY()) / norm;
-  std::unique_ptr<CBC_ResultPoint> c1(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;
-  std::unique_ptr<CBC_ResultPoint> c2(new CBC_ResultPoint(
-      topRight->GetX() + corr * cos, topRight->GetY() + corr * sin));
-  if (!IsValid(c1.get())) {
-    if (IsValid(c2.get())) {
-      return c2.release();
-    }
-    return nullptr;
-  } else if (!IsValid(c2.get())) {
-    return c1.release();
-  }
-  int32_t l1 = FXSYS_abs(std::unique_ptr<CBC_ResultPointsAndTransitions>(
-                             TransitionsBetween(topLeft, c1.get()))
-                             ->GetTransitions() -
-                         std::unique_ptr<CBC_ResultPointsAndTransitions>(
-                             TransitionsBetween(bottomRight, c1.get()))
-                             ->GetTransitions());
-  int32_t l2 = FXSYS_abs(std::unique_ptr<CBC_ResultPointsAndTransitions>(
-                             TransitionsBetween(topLeft, c2.get()))
-                             ->GetTransitions() -
-                         std::unique_ptr<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();
-}
-int32_t CBC_DataMatrixDetector::Round(FX_FLOAT d) {
-  return (int32_t)(d + 0.5f);
-}
-int32_t 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*, int32_t>& table,
-    CBC_ResultPoint* key) {
-  int32_t 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,
-    int32_t dimensionX,
-    int32_t dimensionY,
-    int32_t& 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, nullptr);
-  return cbm;
-}
-CBC_ResultPointsAndTransitions* CBC_DataMatrixDetector::TransitionsBetween(
-    CBC_ResultPoint* from,
-    CBC_ResultPoint* to) {
-  int32_t fromX = (int32_t)from->GetX();
-  int32_t fromY = (int32_t)from->GetY();
-  int32_t toX = (int32_t)to->GetX();
-  int32_t toY = (int32_t)to->GetY();
-  FX_BOOL steep = FXSYS_abs(toY - fromY) > FXSYS_abs(toX - fromX);
-  if (steep) {
-    int32_t temp = fromX;
-    fromX = fromY;
-    fromY = temp;
-    temp = toX;
-    toX = toY;
-    toY = temp;
-  }
-  int32_t dx = FXSYS_abs(toX - fromX);
-  int32_t dy = FXSYS_abs(toY - fromY);
-  int32_t error = -dx >> 1;
-  int32_t ystep = fromY < toY ? 1 : -1;
-  int32_t xstep = fromX < toX ? 1 : -1;
-  int32_t transitions = 0;
-  FX_BOOL inBlack = m_image->Get(steep ? fromY : fromX, steep ? fromX : fromY);
-  for (int32_t 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 new CBC_ResultPointsAndTransitions(from, to, transitions);
-}
-void CBC_DataMatrixDetector::OrderBestPatterns(
-    CFX_ArrayTemplate<CBC_ResultPoint*>* patterns) {
-  FX_FLOAT abDistance = (FX_FLOAT)Distance((*patterns)[0], (*patterns)[1]);
-  FX_FLOAT bcDistance = (FX_FLOAT)Distance((*patterns)[1], (*patterns)[2]);
-  FX_FLOAT acDistance = (FX_FLOAT)Distance((*patterns)[0], (*patterns)[2]);
-  CBC_ResultPoint *topLeft, *topRight, *bottomLeft;
-  if (bcDistance >= abDistance && bcDistance >= acDistance) {
-    topLeft = (*patterns)[0];
-    topRight = (*patterns)[1];
-    bottomLeft = (*patterns)[2];
-  } else if (acDistance >= bcDistance && acDistance >= abDistance) {
-    topLeft = (*patterns)[1];
-    topRight = (*patterns)[0];
-    bottomLeft = (*patterns)[2];
-  } else {
-    topLeft = (*patterns)[2];
-    topRight = (*patterns)[0];
-    bottomLeft = (*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;
-}
-
-CBC_ResultPointsAndTransitions::CBC_ResultPointsAndTransitions(
-    CBC_ResultPoint* from,
-    CBC_ResultPoint* to,
-    int32_t transitions)
-    : m_from(from), m_to(to), m_transitions(transitions) {}
-
-CBC_ResultPointsAndTransitions::~CBC_ResultPointsAndTransitions() {}