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, 481 deletions

diff --git a/xfa/fxbarcode/qrcode/BC_QRFinderPatternFinder.cpp b/xfa/fxbarcode/qrcode/BC_QRFinderPatternFinder.cpp
deleted file mode 100644
index 5ceeefac53..0000000000
--- a/xfa/fxbarcode/qrcode/BC_QRFinderPatternFinder.cpp
+++ /dev/null
@@ -1,481 +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 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/fxbarcode/qrcode/BC_QRFinderPatternFinder.h"
-
-#include <memory>
-
-#include "core/fxcrt/include/fx_basic.h"
-#include "xfa/fxbarcode/BC_ResultPoint.h"
-#include "xfa/fxbarcode/common/BC_CommonBitMatrix.h"
-#include "xfa/fxbarcode/qrcode/BC_FinderPatternInfo.h"
-#include "xfa/fxbarcode/qrcode/BC_QRFinderPattern.h"
-#include "xfa/fxbarcode/utils.h"
-
-const int32_t CBC_QRFinderPatternFinder::CENTER_QUORUM = 2;
-const int32_t CBC_QRFinderPatternFinder::MIN_SKIP = 3;
-const int32_t CBC_QRFinderPatternFinder::MAX_MODULES = 57;
-const int32_t CBC_QRFinderPatternFinder::INTEGER_MATH_SHIFT = 8;
-
-CBC_QRFinderPatternFinder::CBC_QRFinderPatternFinder(
-    CBC_CommonBitMatrix* image) {
-  m_image = image;
-  m_crossCheckStateCount.SetSize(5);
-  m_hasSkipped = FALSE;
-}
-
-CBC_QRFinderPatternFinder::~CBC_QRFinderPatternFinder() {
-  for (int32_t i = 0; i < m_possibleCenters.GetSize(); i++)
-    delete m_possibleCenters[i];
-}
-
-class ClosestToAverageComparator {
- private:
-  FX_FLOAT m_averageModuleSize;
-
- public:
-  ClosestToAverageComparator(FX_FLOAT averageModuleSize)
-      : m_averageModuleSize(averageModuleSize) {}
-  int32_t operator()(FinderPattern* a, FinderPattern* b) {
-    FX_FLOAT dA =
-        (FX_FLOAT)fabs(a->GetEstimatedModuleSize() - m_averageModuleSize);
-    FX_FLOAT dB =
-        (FX_FLOAT)fabs(b->GetEstimatedModuleSize() - m_averageModuleSize);
-    return dA < dB ? -1 : dA > dB ? 1 : 0;
-  }
-};
-class CenterComparator {
- public:
-  int32_t operator()(FinderPattern* a, FinderPattern* b) {
-    return b->GetCount() - a->GetCount();
-  }
-};
-CBC_CommonBitMatrix* CBC_QRFinderPatternFinder::GetImage() {
-  return m_image;
-}
-CFX_Int32Array& CBC_QRFinderPatternFinder::GetCrossCheckStateCount() {
-  m_crossCheckStateCount[0] = 0;
-  m_crossCheckStateCount[1] = 0;
-  m_crossCheckStateCount[2] = 0;
-  m_crossCheckStateCount[3] = 0;
-  m_crossCheckStateCount[4] = 0;
-  return m_crossCheckStateCount;
-}
-
-CFX_ArrayTemplate<CBC_QRFinderPattern*>*
-CBC_QRFinderPatternFinder::GetPossibleCenters() {
-  return &m_possibleCenters;
-}
-
-CBC_QRFinderPatternInfo* CBC_QRFinderPatternFinder::Find(int32_t hint,
-                                                         int32_t& e) {
-  int32_t maxI = m_image->GetHeight();
-  int32_t maxJ = m_image->GetWidth();
-  int32_t iSkip = (3 * maxI) / (4 * MAX_MODULES);
-  if (iSkip < MIN_SKIP || 0) {
-    iSkip = MIN_SKIP;
-  }
-  FX_BOOL done = FALSE;
-  CFX_Int32Array stateCount;
-  stateCount.SetSize(5);
-  for (int32_t i = iSkip - 1; i < maxI && !done; i += iSkip) {
-    stateCount[0] = 0;
-    stateCount[1] = 0;
-    stateCount[2] = 0;
-    stateCount[3] = 0;
-    stateCount[4] = 0;
-    int32_t currentState = 0;
-    for (int32_t j = 0; j < maxJ; j++) {
-      if (m_image->Get(j, i)) {
-        if ((currentState & 1) == 1) {
-          currentState++;
-        }
-        stateCount[currentState]++;
-      } else {
-        if ((currentState & 1) == 0) {
-          if (currentState == 4) {
-            if (FoundPatternCross(stateCount)) {
-              FX_BOOL confirmed = HandlePossibleCenter(stateCount, i, j);
-              if (confirmed) {
-                iSkip = 2;
-                if (m_hasSkipped) {
-                  done = HaveMultiplyConfirmedCenters();
-                } else {
-                  int32_t rowSkip = FindRowSkip();
-                  if (rowSkip > stateCount[2]) {
-                    i += rowSkip - stateCount[2] - iSkip;
-                    j = maxJ - 1;
-                  }
-                }
-              } else {
-                do {
-                  j++;
-                } while (j < maxJ && !m_image->Get(j, i));
-                j--;
-              }
-              currentState = 0;
-              stateCount[0] = 0;
-              stateCount[1] = 0;
-              stateCount[2] = 0;
-              stateCount[3] = 0;
-              stateCount[4] = 0;
-            } else {
-              stateCount[0] = stateCount[2];
-              stateCount[1] = stateCount[3];
-              stateCount[2] = stateCount[4];
-              stateCount[3] = 1;
-              stateCount[4] = 0;
-              currentState = 3;
-            }
-          } else {
-            stateCount[++currentState]++;
-          }
-        } else {
-          stateCount[currentState]++;
-        }
-      }
-    }
-    if (FoundPatternCross(stateCount)) {
-      FX_BOOL confirmed = HandlePossibleCenter(stateCount, i, maxJ);
-      if (confirmed) {
-        iSkip = stateCount[0];
-        if (m_hasSkipped) {
-          done = HaveMultiplyConfirmedCenters();
-        }
-      }
-    }
-  }
-  std::unique_ptr<CFX_ArrayTemplate<CBC_QRFinderPattern*>> patternInfo(
-      SelectBestpatterns(e));
-  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  OrderBestPatterns(patternInfo.get());
-  return new CBC_QRFinderPatternInfo(patternInfo.get());
-}
-void CBC_QRFinderPatternFinder::OrderBestPatterns(
-    CFX_ArrayTemplate<CBC_QRFinderPattern*>* patterns) {
-  FX_FLOAT abDistance = Distance((*patterns)[0], (*patterns)[1]);
-  FX_FLOAT bcDistance = Distance((*patterns)[1], (*patterns)[2]);
-  FX_FLOAT acDistance = Distance((*patterns)[0], (*patterns)[2]);
-  CBC_QRFinderPattern* topLeft;
-  CBC_QRFinderPattern* topRight;
-  CBC_QRFinderPattern* 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_QRFinderPattern* temp = topRight;
-    topRight = bottomLeft;
-    bottomLeft = temp;
-  }
-  (*patterns)[0] = bottomLeft;
-  (*patterns)[1] = topLeft;
-  (*patterns)[2] = topRight;
-}
-FX_FLOAT CBC_QRFinderPatternFinder::Distance(CBC_ResultPoint* point1,
-                                             CBC_ResultPoint* point2) {
-  FX_FLOAT dx = point1->GetX() - point2->GetX();
-  FX_FLOAT dy = point1->GetY() - point2->GetY();
-  return (FX_FLOAT)FXSYS_sqrt(dx * dx + dy * dy);
-}
-FX_FLOAT CBC_QRFinderPatternFinder::CenterFromEnd(
-    const CFX_Int32Array& stateCount,
-    int32_t end) {
-  return (FX_FLOAT)(end - stateCount[4] - stateCount[3]) - stateCount[2] / 2.0f;
-}
-FX_BOOL CBC_QRFinderPatternFinder::FoundPatternCross(
-    const CFX_Int32Array& stateCount) {
-  int32_t totalModuleSize = 0;
-  for (int32_t i = 0; i < 5; i++) {
-    int32_t count = stateCount[i];
-    if (count == 0) {
-      return FALSE;
-    }
-    totalModuleSize += count;
-  }
-  if (totalModuleSize < 7) {
-    return FALSE;
-  }
-  int32_t moduleSize = (totalModuleSize << INTEGER_MATH_SHIFT) / 7;
-  int32_t maxVariance = moduleSize / 2;
-  return FXSYS_abs(moduleSize - (stateCount[0] << INTEGER_MATH_SHIFT)) <
-             maxVariance &&
-         FXSYS_abs(moduleSize - (stateCount[1] << INTEGER_MATH_SHIFT)) <
-             maxVariance &&
-         FXSYS_abs(3 * moduleSize - (stateCount[2] << INTEGER_MATH_SHIFT)) <
-             3 * maxVariance &&
-         FXSYS_abs(moduleSize - (stateCount[3] << INTEGER_MATH_SHIFT)) <
-             maxVariance &&
-         FXSYS_abs(moduleSize - (stateCount[4] << INTEGER_MATH_SHIFT)) <
-             maxVariance;
-}
-FX_FLOAT CBC_QRFinderPatternFinder::CrossCheckVertical(
-    int32_t startI,
-    int32_t centerJ,
-    int32_t maxCount,
-    int32_t originalStateCountTotal) {
-  CBC_CommonBitMatrix* image = m_image;
-  int32_t maxI = image->GetHeight();
-  CFX_Int32Array& stateCount = GetCrossCheckStateCount();
-  int32_t i = startI;
-  while (i >= 0 && image->Get(centerJ, i)) {
-    stateCount[2]++;
-    i--;
-  }
-  if (i < 0) {
-    return FXSYS_nan();
-  }
-  while (i >= 0 && !image->Get(centerJ, i) && stateCount[1] <= maxCount) {
-    stateCount[1]++;
-    i--;
-  }
-  if (i < 0 || stateCount[1] > maxCount) {
-    return FXSYS_nan();
-  }
-  while (i >= 0 && image->Get(centerJ, i) && stateCount[0] <= maxCount) {
-    stateCount[0]++;
-    i--;
-  }
-  if (stateCount[0] > maxCount) {
-    return FXSYS_nan();
-  }
-  i = startI + 1;
-  while (i < maxI && image->Get(centerJ, i)) {
-    stateCount[2]++;
-    i++;
-  }
-  if (i == maxI) {
-    return FXSYS_nan();
-  }
-  while (i < maxI && !image->Get(centerJ, i) && stateCount[3] < maxCount) {
-    stateCount[3]++;
-    i++;
-  }
-  if (i == maxI || stateCount[3] >= maxCount) {
-    return FXSYS_nan();
-  }
-  while (i < maxI && image->Get(centerJ, i) && stateCount[4] < maxCount) {
-    stateCount[4]++;
-    i++;
-  }
-  if (stateCount[4] >= maxCount) {
-    return FXSYS_nan();
-  }
-  int32_t stateCountTotal = stateCount[0] + stateCount[1] + stateCount[2] +
-                            stateCount[3] + stateCount[4];
-  if (5 * FXSYS_abs(stateCountTotal - originalStateCountTotal) >=
-      originalStateCountTotal) {
-    return FXSYS_nan();
-  }
-  return FoundPatternCross(stateCount) ? CenterFromEnd(stateCount, i)
-                                       : FXSYS_nan();
-}
-FX_FLOAT CBC_QRFinderPatternFinder::CrossCheckHorizontal(
-    int32_t startJ,
-    int32_t centerI,
-    int32_t maxCount,
-    int32_t originalStateCountTotal) {
-  CBC_CommonBitMatrix* image = m_image;
-  int32_t maxJ = image->GetWidth();
-  CFX_Int32Array& stateCount = GetCrossCheckStateCount();
-  int32_t j = startJ;
-  while (j >= 0 && image->Get(j, centerI)) {
-    stateCount[2]++;
-    j--;
-  }
-  if (j < 0) {
-    return FXSYS_nan();
-  }
-  while (j >= 0 && !image->Get(j, centerI) && stateCount[1] <= maxCount) {
-    stateCount[1]++;
-    j--;
-  }
-  if (j < 0 || stateCount[1] > maxCount) {
-    return FXSYS_nan();
-  }
-  while (j >= 0 && image->Get(j, centerI) && stateCount[0] <= maxCount) {
-    stateCount[0]++;
-    j--;
-  }
-  if (stateCount[0] > maxCount) {
-    return FXSYS_nan();
-  }
-  j = startJ + 1;
-  while (j < maxJ && image->Get(j, centerI)) {
-    stateCount[2]++;
-    j++;
-  }
-  if (j == maxJ) {
-    return FXSYS_nan();
-  }
-  while (j < maxJ && !image->Get(j, centerI) && stateCount[3] < maxCount) {
-    stateCount[3]++;
-    j++;
-  }
-  if (j == maxJ || stateCount[3] >= maxCount) {
-    return FXSYS_nan();
-  }
-  while (j < maxJ && image->Get(j, centerI) && stateCount[4] < maxCount) {
-    stateCount[4]++;
-    j++;
-  }
-  if (stateCount[4] >= maxCount) {
-    return FXSYS_nan();
-  }
-  int32_t stateCountTotal = stateCount[0] + stateCount[1] + stateCount[2] +
-                            stateCount[3] + stateCount[4];
-  if (5 * FXSYS_abs(stateCountTotal - originalStateCountTotal) >=
-      originalStateCountTotal) {
-    return FXSYS_nan();
-  }
-  return FoundPatternCross(stateCount) ? CenterFromEnd(stateCount, j)
-                                       : FXSYS_nan();
-}
-FX_BOOL CBC_QRFinderPatternFinder::HandlePossibleCenter(
-    const CFX_Int32Array& stateCount,
-    int32_t i,
-    int32_t j) {
-  int32_t stateCountTotal = stateCount[0] + stateCount[1] + stateCount[2] +
-                            stateCount[3] + stateCount[4];
-  FX_FLOAT centerJ = CenterFromEnd(stateCount, j);
-  FX_FLOAT centerI =
-      CrossCheckVertical(i, (int32_t)centerJ, stateCount[2], stateCountTotal);
-  if (!FXSYS_isnan(centerI)) {
-    centerJ = CrossCheckHorizontal((int32_t)centerJ, (int32_t)centerI,
-                                   stateCount[2], stateCountTotal);
-    if (!FXSYS_isnan(centerJ)) {
-      FX_FLOAT estimatedModuleSize = (FX_FLOAT)stateCountTotal / 7.0f;
-      FX_BOOL found = FALSE;
-      int32_t max = m_possibleCenters.GetSize();
-      for (int32_t index = 0; index < max; index++) {
-        CBC_QRFinderPattern* center = m_possibleCenters[index];
-        if (center->AboutEquals(estimatedModuleSize, centerI, centerJ)) {
-          center->IncrementCount();
-          found = TRUE;
-          break;
-        }
-      }
-      if (!found) {
-        m_possibleCenters.Add(
-            new CBC_QRFinderPattern(centerJ, centerI, estimatedModuleSize));
-      }
-      return TRUE;
-    }
-  }
-  return FALSE;
-}
-int32_t CBC_QRFinderPatternFinder::FindRowSkip() {
-  int32_t max = m_possibleCenters.GetSize();
-  if (max <= 1) {
-    return 0;
-  }
-  FinderPattern* firstConfirmedCenter = nullptr;
-  for (int32_t i = 0; i < max; i++) {
-    CBC_QRFinderPattern* center = m_possibleCenters[i];
-    if (center->GetCount() >= CENTER_QUORUM) {
-      if (firstConfirmedCenter) {
-        m_hasSkipped = TRUE;
-        return (int32_t)((fabs(firstConfirmedCenter->GetX() - center->GetX()) -
-                          fabs(firstConfirmedCenter->GetY() - center->GetY())) /
-                         2);
-      }
-      firstConfirmedCenter = center;
-    }
-  }
-  return 0;
-}
-FX_BOOL CBC_QRFinderPatternFinder::HaveMultiplyConfirmedCenters() {
-  int32_t confirmedCount = 0;
-  FX_FLOAT totalModuleSize = 0.0f;
-  int32_t max = m_possibleCenters.GetSize();
-  int32_t i;
-  for (i = 0; i < max; i++) {
-    CBC_QRFinderPattern* pattern = m_possibleCenters[i];
-    if (pattern->GetCount() >= CENTER_QUORUM) {
-      confirmedCount++;
-      totalModuleSize += pattern->GetEstimatedModuleSize();
-    }
-  }
-  if (confirmedCount < 3) {
-    return FALSE;
-  }
-  FX_FLOAT average = totalModuleSize / (FX_FLOAT)max;
-  FX_FLOAT totalDeviation = 0.0f;
-  for (i = 0; i < max; i++) {
-    CBC_QRFinderPattern* pattern = m_possibleCenters[i];
-    totalDeviation += fabs(pattern->GetEstimatedModuleSize() - average);
-  }
-  return totalDeviation <= 0.05f * totalModuleSize;
-}
-
-CFX_ArrayTemplate<CBC_QRFinderPattern*>*
-CBC_QRFinderPatternFinder::SelectBestpatterns(int32_t& e) {
-  int32_t startSize = m_possibleCenters.GetSize();
-  if (m_possibleCenters.GetSize() < 3) {
-    e = BCExceptionRead;
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  }
-  FX_FLOAT average = 0.0f;
-  if (startSize > 3) {
-    FX_FLOAT totalModuleSize = 0.0f;
-    for (int32_t i = 0; i < startSize; i++)
-      totalModuleSize += m_possibleCenters[i]->GetEstimatedModuleSize();
-
-    average = totalModuleSize / (FX_FLOAT)startSize;
-    for (int32_t j = 0;
-         j < m_possibleCenters.GetSize() && m_possibleCenters.GetSize() > 3;
-         j++) {
-      CBC_QRFinderPattern* pattern = m_possibleCenters[j];
-      if (fabs(pattern->GetEstimatedModuleSize() - average) > 0.2f * average) {
-        delete pattern;
-        m_possibleCenters.RemoveAt(j);
-        j--;
-      }
-    }
-  }
-  if (m_possibleCenters.GetSize() > 3) {
-    std::sort(m_possibleCenters.GetData(),
-              m_possibleCenters.GetData() + m_possibleCenters.GetSize(),
-              [](const CBC_QRFinderPattern* a, CBC_QRFinderPattern* b) {
-                return a->GetCount() > b->GetCount();  // e.g. Descending.
-              });
-  }
-  CFX_ArrayTemplate<CBC_QRFinderPattern*>* vec =
-      new CFX_ArrayTemplate<CBC_QRFinderPattern*>();
-  vec->SetSize(3);
-  (*vec)[0] = m_possibleCenters[0]->Clone();
-  (*vec)[1] = m_possibleCenters[1]->Clone();
-  (*vec)[2] = m_possibleCenters[2]->Clone();
-  return vec;
-}