Move xfa/src up to xfa/.

xfa/src/fxbarcode/qrcode/BC_QRAlignmentPatternFinder.cpp

-// 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/BC_ResultPoint.h"
-#include "xfa/src/fxbarcode/common/BC_CommonBitMatrix.h"
-#include "xfa/src/fxbarcode/qrcode/BC_QRAlignmentPattern.h"
-#include "xfa/src/fxbarcode/qrcode/BC_QRAlignmentPatternFinder.h"
-
-CBC_QRAlignmentPatternFinder::CBC_QRAlignmentPatternFinder(
-    CBC_CommonBitMatrix* image,
-    int32_t startX,
-    int32_t startY,
-    int32_t width,
-    int32_t height,
-    FX_FLOAT moduleSize)
-    : m_image(image),
-      m_startX(startX),
-      m_startY(startY),
-      m_width(width),
-      m_height(height),
-      m_moduleSize(moduleSize) {
-  m_crossCheckStateCount.SetSize(3);
-}
-CBC_QRAlignmentPatternFinder::~CBC_QRAlignmentPatternFinder() {
-  for (int32_t i = 0; i < m_possibleCenters.GetSize(); i++) {
-    delete (CBC_QRAlignmentPattern*)m_possibleCenters[i];
-  }
-  m_possibleCenters.RemoveAll();
-}
-CBC_QRAlignmentPattern* CBC_QRAlignmentPatternFinder::Find(int32_t& e) {
-  int32_t startX = m_startX;
-  int32_t height = m_height;
-  int32_t maxJ = startX + m_width;
-  int32_t middleI = m_startY + (height >> 1);
-  CFX_Int32Array stateCount;
-  stateCount.SetSize(3);
-  for (int32_t iGen = 0; iGen < height; iGen++) {
-    int32_t i =
-        middleI + ((iGen & 0x01) == 0 ? ((iGen + 1) >> 1) : -((iGen + 1) >> 1));
-    stateCount[0] = 0;
-    stateCount[1] = 0;
-    stateCount[2] = 0;
-    int32_t j = startX;
-    while (j < maxJ && !m_image->Get(j, i)) {
-      j++;
-    }
-    int32_t currentState = 0;
-    while (j < maxJ) {
-      if (m_image->Get(j, i)) {
-        if (currentState == 1) {
-          stateCount[currentState]++;
-        } else {
-          if (currentState == 2) {
-            if (FoundPatternCross(stateCount)) {
-              CBC_QRAlignmentPattern* confirmed =
-                  HandlePossibleCenter(stateCount, i, j);
-              if (confirmed) {
-                return confirmed;
-              }
-            }
-            stateCount[0] = stateCount[2];
-            stateCount[1] = 1;
-            stateCount[2] = 0;
-            currentState = 1;
-          } else {
-            stateCount[++currentState]++;
-          }
-        }
-      } else {
-        if (currentState == 1) {
-          currentState++;
-        }
-        stateCount[currentState]++;
-      }
-      j++;
-    }
-    if (FoundPatternCross(stateCount)) {
-      CBC_QRAlignmentPattern* confirmed =
-          HandlePossibleCenter(stateCount, i, maxJ);
-      if (confirmed) {
-        return confirmed;
-      }
-    }
-  }
-  if (m_possibleCenters.GetSize() != 0) {
-    return ((CBC_QRAlignmentPattern*)(m_possibleCenters[0]))->Clone();
-  }
-  e = BCExceptionRead;
-  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
-  return NULL;
-}
-FX_FLOAT CBC_QRAlignmentPatternFinder::CenterFromEnd(
-    const CFX_Int32Array& stateCount,
-    int32_t end) {
-  return (FX_FLOAT)(end - stateCount[2]) - stateCount[1] / 2.0f;
-}
-FX_BOOL CBC_QRAlignmentPatternFinder::FoundPatternCross(
-    const CFX_Int32Array& stateCount) {
-  FX_FLOAT moduleSize = m_moduleSize;
-  FX_FLOAT maxVariance = moduleSize / 2.0f;
-  for (int32_t i = 0; i < 3; i++) {
-    if (fabs(moduleSize - stateCount[i]) >= maxVariance) {
-      return false;
-    }
-  }
-  return TRUE;
-}
-FX_FLOAT CBC_QRAlignmentPatternFinder::CrossCheckVertical(
-    int32_t startI,
-    int32_t centerJ,
-    int32_t maxCount,
-    int32_t originalStateCountTotal) {
-  int32_t maxI = m_image->GetHeight();
-  CFX_Int32Array stateCount;
-  stateCount.Copy(m_crossCheckStateCount);
-  stateCount[0] = 0;
-  stateCount[1] = 0;
-  stateCount[2] = 0;
-  int32_t i = startI;
-  while (i >= 0 && m_image->Get(centerJ, i) && stateCount[1] <= maxCount) {
-    stateCount[1]++;
-    i--;
-  }
-  if (i < 0 || stateCount[1] > maxCount) {
-    return FXSYS_nan();
-  }
-  while (i >= 0 && !m_image->Get(centerJ, i) && stateCount[0] <= maxCount) {
-    stateCount[0]++;
-    i--;
-  }
-  if (stateCount[0] > maxCount) {
-    return FXSYS_nan();
-  }
-  i = startI + 1;
-  while (i < maxI && m_image->Get(centerJ, i) && stateCount[1] <= maxCount) {
-    stateCount[1]++;
-    i++;
-  }
-  if (i == maxI || stateCount[1] > maxCount) {
-    return FXSYS_nan();
-  }
-  while (i < maxI && !m_image->Get(centerJ, i) && stateCount[2] <= maxCount) {
-    stateCount[2]++;
-    i++;
-  }
-  if (stateCount[2] > maxCount) {
-    return FXSYS_nan();
-  }
-  int32_t stateCountTotal = stateCount[0] + stateCount[1] + stateCount[2];
-  if (5 * abs(stateCountTotal - originalStateCountTotal) >=
-      originalStateCountTotal) {
-    return FXSYS_nan();
-  }
-  return FoundPatternCross(stateCount) ? CenterFromEnd(stateCount, i)
-                                       : FXSYS_nan();
-}
-CBC_QRAlignmentPattern* CBC_QRAlignmentPatternFinder::HandlePossibleCenter(
-    const CFX_Int32Array& stateCount,
-    int32_t i,
-    int32_t j) {
-  int32_t stateCountTotal = stateCount[0] + stateCount[1] + stateCount[2];
-  FX_FLOAT centerJ = CenterFromEnd(stateCount, j);
-  FX_FLOAT centerI = CrossCheckVertical(i, (int32_t)centerJ, 2 * stateCount[1],
-                                        stateCountTotal);
-  if (!FXSYS_isnan(centerI)) {
-    FX_FLOAT estimatedModuleSize =
-        (FX_FLOAT)(stateCount[0] + stateCount[1] + stateCount[2]) / 3.0f;
-    int32_t max = m_possibleCenters.GetSize();
-    for (int32_t index = 0; index < max; index++) {
-      CBC_QRAlignmentPattern* center =
-          (CBC_QRAlignmentPattern*)(m_possibleCenters[index]);
-      if (center->AboutEquals(estimatedModuleSize, centerI, centerJ)) {
-        return new CBC_QRAlignmentPattern(centerJ, centerI,
-                                          estimatedModuleSize);
-      }
-    }
-    m_possibleCenters.Add(
-        new CBC_QRAlignmentPattern(centerJ, centerI, estimatedModuleSize));
-  }
-  return NULL;
-}