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Unified Diff: xfa/src/fxbarcode/qrcode/BC_QRDetector.cpp

Issue 1636873004: XFA: Fix DOS newlines (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@xfa
Patch Set: All of them Created 4 years, 11 months ago
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Index: xfa/src/fxbarcode/qrcode/BC_QRDetector.cpp
diff --git a/xfa/src/fxbarcode/qrcode/BC_QRDetector.cpp b/xfa/src/fxbarcode/qrcode/BC_QRDetector.cpp
index 2280e9a4b87744e2e112fb0a0431f16c29dca87e..44bbce3aab73e278867e7ce12b80981ab9ff6b35 100644
--- a/xfa/src/fxbarcode/qrcode/BC_QRDetector.cpp
+++ b/xfa/src/fxbarcode/qrcode/BC_QRDetector.cpp
@@ -1,277 +1,277 @@
-// 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 <algorithm>
-
-#include "xfa/src/fxbarcode/barcode.h"
-#include "xfa/src/fxbarcode/common/BC_CommonBitMatrix.h"
-#include "xfa/src/fxbarcode/BC_ResultPoint.h"
-#include "BC_QRFinderPattern.h"
-#include "BC_QRCoderVersion.h"
-#include "BC_FinderPatternInfo.h"
-#include "BC_QRGridSampler.h"
-#include "BC_QRAlignmentPatternFinder.h"
-#include "BC_QRFinderPatternFinder.h"
-#include "BC_QRDetectorResult.h"
-#include "BC_QRDetector.h"
-CBC_QRDetector::CBC_QRDetector(CBC_CommonBitMatrix* image) : m_image(image) {}
-CBC_QRDetector::~CBC_QRDetector() {}
-CBC_QRDetectorResult* CBC_QRDetector::Detect(int32_t hints, int32_t& e) {
- CBC_QRFinderPatternFinder finder(m_image);
- CBC_QRFinderPatternInfo* qpi = finder.Find(hints, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- CBC_AutoPtr<CBC_QRFinderPatternInfo> info(qpi);
- CBC_QRDetectorResult* qdr = ProcessFinderPatternInfo(info.get(), e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- return qdr;
-}
-CBC_QRDetectorResult* CBC_QRDetector::ProcessFinderPatternInfo(
- CBC_QRFinderPatternInfo* info,
- int32_t& e) {
- CBC_AutoPtr<CBC_QRFinderPattern> topLeft(info->GetTopLeft());
- CBC_AutoPtr<CBC_QRFinderPattern> topRight(info->GetTopRight());
- CBC_AutoPtr<CBC_QRFinderPattern> bottomLeft(info->GetBottomLeft());
- FX_FLOAT moduleSize =
- CalculateModuleSize(topLeft.get(), topRight.get(), bottomLeft.get());
- if (moduleSize < 1.0f) {
- e = BCExceptionRead;
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- }
- int32_t dimension = ComputeDimension(topLeft.get(), topRight.get(),
- bottomLeft.get(), moduleSize, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- CBC_QRCoderVersion* provisionalVersion =
- CBC_QRCoderVersion::GetProvisionalVersionForDimension(dimension, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- int32_t modulesBetweenFPCenters =
- provisionalVersion->GetDimensionForVersion() - 7;
- CBC_QRAlignmentPattern* alignmentPattern = NULL;
- if (provisionalVersion->GetAlignmentPatternCenters()->GetSize() > 0) {
- FX_FLOAT bottomRightX =
- topRight->GetX() - topLeft->GetX() + bottomLeft->GetX();
- FX_FLOAT bottomRightY =
- topRight->GetY() - topLeft->GetY() + bottomLeft->GetY();
- FX_FLOAT correctionToTopLeft =
- 1.0f - 3.0f / (FX_FLOAT)modulesBetweenFPCenters;
- FX_FLOAT xtemp = (topLeft->GetX() +
- correctionToTopLeft * (bottomRightX - topLeft->GetX()));
- int32_t estAlignmentX = (int32_t)xtemp;
- FX_FLOAT ytemp = (topLeft->GetY() +
- correctionToTopLeft * (bottomRightY - topLeft->GetY()));
- int32_t estAlignmentY = (int32_t)ytemp;
- for (int32_t i = 4; i <= 16; i <<= 1) {
- CBC_QRAlignmentPattern* temp = FindAlignmentInRegion(
- moduleSize, estAlignmentX, estAlignmentY, (FX_FLOAT)i, e);
- alignmentPattern = temp;
- break;
- }
- }
- CBC_CommonBitMatrix* bits =
- SampleGrid(m_image, topLeft.get(), topRight.get(), bottomLeft.get(),
- (CBC_ResultPoint*)(alignmentPattern), dimension, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- CFX_PtrArray* points = new CFX_PtrArray;
- if (alignmentPattern == NULL) {
- points->Add(bottomLeft.release());
- points->Add(topLeft.release());
- points->Add(topRight.release());
- } else {
- points->Add(bottomLeft.release());
- points->Add(topLeft.release());
- points->Add(topRight.release());
- points->Add(alignmentPattern);
- }
- return new CBC_QRDetectorResult(bits, points);
-}
-CBC_CommonBitMatrix* CBC_QRDetector::SampleGrid(
- CBC_CommonBitMatrix* image,
- CBC_ResultPoint* topLeft,
- CBC_ResultPoint* topRight,
- CBC_ResultPoint* bottomLeft,
- CBC_ResultPoint* alignmentPattern,
- int32_t dimension,
- int32_t& e) {
- FX_FLOAT dimMinusThree = (FX_FLOAT)dimension - 3.5f;
- FX_FLOAT bottomRightX;
- FX_FLOAT bottomRightY;
- FX_FLOAT sourceBottomRightX;
- FX_FLOAT sourceBottomRightY;
- if (alignmentPattern != NULL) {
- bottomRightX = alignmentPattern->GetX();
- bottomRightY = alignmentPattern->GetY();
- sourceBottomRightX = sourceBottomRightY = dimMinusThree - 3.0f;
- } else {
- bottomRightX = (topRight->GetX() - topLeft->GetX()) + bottomLeft->GetX();
- bottomRightY = (topRight->GetY() - topLeft->GetY()) + bottomLeft->GetY();
- sourceBottomRightX = sourceBottomRightY = dimMinusThree;
- }
- CBC_QRGridSampler& sampler = CBC_QRGridSampler::GetInstance();
- CBC_CommonBitMatrix* cbm = sampler.SampleGrid(
- image, dimension, dimension, 3.5f, 3.5f, dimMinusThree, 3.5f,
- sourceBottomRightX, sourceBottomRightY, 3.5f, dimMinusThree,
- topLeft->GetX(), topLeft->GetY(), topRight->GetX(), topRight->GetY(),
- bottomRightX, bottomRightY, bottomLeft->GetX(), bottomLeft->GetY(), e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- return cbm;
-}
-int32_t CBC_QRDetector::ComputeDimension(CBC_ResultPoint* topLeft,
- CBC_ResultPoint* topRight,
- CBC_ResultPoint* bottomLeft,
- FX_FLOAT moduleSize,
- int32_t& e) {
- int32_t tltrCentersDimension = Round(
- CBC_QRFinderPatternFinder::Distance(topLeft, topRight) / moduleSize);
- int32_t tlblCentersDimension = Round(
- CBC_QRFinderPatternFinder::Distance(topLeft, bottomLeft) / moduleSize);
- int32_t dimension = ((tltrCentersDimension + tlblCentersDimension) >> 1) + 7;
- switch (dimension & 0x03) {
- case 0:
- dimension++;
- break;
- case 2:
- dimension--;
- break;
- case 3: {
- e = BCExceptionRead;
- BC_EXCEPTION_CHECK_ReturnValue(e, 0);
- }
- }
- return dimension;
-}
-FX_FLOAT CBC_QRDetector::CalculateModuleSize(CBC_ResultPoint* topLeft,
- CBC_ResultPoint* topRight,
- CBC_ResultPoint* bottomLeft) {
- return (CalculateModuleSizeOneWay(topLeft, topRight) +
- CalculateModuleSizeOneWay(topLeft, bottomLeft)) /
- 2.0f;
-}
-FX_FLOAT CBC_QRDetector::CalculateModuleSizeOneWay(
- CBC_ResultPoint* pattern,
- CBC_ResultPoint* otherPattern) {
- FX_FLOAT moduleSizeEst1 = SizeOfBlackWhiteBlackRunBothWays(
- (int32_t)pattern->GetX(), (int32_t)pattern->GetY(),
- (int32_t)otherPattern->GetX(), (int32_t)otherPattern->GetY());
- FX_FLOAT moduleSizeEst2 = SizeOfBlackWhiteBlackRunBothWays(
- (int32_t)otherPattern->GetX(), (int32_t)otherPattern->GetY(),
- (int32_t)pattern->GetX(), (int32_t)pattern->GetY());
- if (FXSYS_isnan(moduleSizeEst1)) {
- return moduleSizeEst2;
- }
- if (FXSYS_isnan(moduleSizeEst2)) {
- return moduleSizeEst1;
- }
- return (moduleSizeEst1 + moduleSizeEst2) / 14.0f;
-}
-int32_t CBC_QRDetector::Round(FX_FLOAT d) {
- return (int32_t)(d + 0.5f);
-}
-FX_FLOAT CBC_QRDetector::SizeOfBlackWhiteBlackRunBothWays(int32_t fromX,
- int32_t fromY,
- int32_t toX,
- int32_t toY) {
- FX_FLOAT result = SizeOfBlackWhiteBlackRun(fromX, fromY, toX, toY);
- int32_t otherToX = fromX - (toX - fromX);
- if (otherToX < 0) {
- otherToX = -1;
- } else if (otherToX >= m_image->GetWidth()) {
- otherToX = m_image->GetWidth();
- }
- int32_t otherToY = fromY - (toY - fromY);
- if (otherToY < 0) {
- otherToY = -1;
- } else if (otherToY >= m_image->GetHeight()) {
- otherToY = m_image->GetHeight();
- }
- result += SizeOfBlackWhiteBlackRun(fromX, fromY, otherToX, otherToY);
- return result - 1.0f;
-}
-FX_FLOAT CBC_QRDetector::SizeOfBlackWhiteBlackRun(int32_t fromX,
- int32_t fromY,
- int32_t toX,
- int32_t toY) {
- 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 state = 0;
- for (int32_t x = fromX, y = fromY; x != toX; x += xstep) {
- int32_t realX = steep ? y : x;
- int32_t realY = steep ? x : y;
- if (state == 1) {
- if (m_image->Get(realX, realY)) {
- state++;
- }
- } else {
- if (!m_image->Get(realX, realY)) {
- state++;
- }
- }
- if (state == 3) {
- int32_t diffX = x - fromX;
- int32_t diffY = y - fromY;
- return (FX_FLOAT)sqrt((double)(diffX * diffX + diffY * diffY));
- }
- error += dy;
- if (error > 0) {
- y += ystep;
- error -= dx;
- }
- }
- int32_t diffX = toX - fromX;
- int32_t diffY = toY - fromY;
- return (FX_FLOAT)sqrt((double)(diffX * diffX + diffY * diffY));
-}
-CBC_QRAlignmentPattern* CBC_QRDetector::FindAlignmentInRegion(
- FX_FLOAT overallEstModuleSize,
- int32_t estAlignmentX,
- int32_t estAlignmentY,
- FX_FLOAT allowanceFactor,
- int32_t& e) {
- int32_t allowance = (int32_t)(allowanceFactor * overallEstModuleSize);
- int32_t alignmentAreaLeftX = std::max(0, estAlignmentX - allowance);
- int32_t alignmentAreaRightX =
- std::min(m_image->GetWidth() - 1, estAlignmentX + allowance);
- if (alignmentAreaRightX - alignmentAreaLeftX < overallEstModuleSize * 3) {
- e = BCExceptionRead;
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- }
- int32_t alignmentAreaTopY = std::max(0, estAlignmentY - allowance);
- int32_t alignmentAreaBottomY =
- std::min(m_image->GetHeight() - 1, estAlignmentY + allowance);
- CBC_QRAlignmentPatternFinder alignmentFinder(
- m_image, alignmentAreaLeftX, alignmentAreaTopY,
- alignmentAreaRightX - alignmentAreaLeftX,
- alignmentAreaBottomY - alignmentAreaTopY, overallEstModuleSize);
- CBC_QRAlignmentPattern* qap = alignmentFinder.Find(e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- return qap;
-}
+// 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 <algorithm>
+
+#include "xfa/src/fxbarcode/barcode.h"
+#include "xfa/src/fxbarcode/common/BC_CommonBitMatrix.h"
+#include "xfa/src/fxbarcode/BC_ResultPoint.h"
+#include "BC_QRFinderPattern.h"
+#include "BC_QRCoderVersion.h"
+#include "BC_FinderPatternInfo.h"
+#include "BC_QRGridSampler.h"
+#include "BC_QRAlignmentPatternFinder.h"
+#include "BC_QRFinderPatternFinder.h"
+#include "BC_QRDetectorResult.h"
+#include "BC_QRDetector.h"
+CBC_QRDetector::CBC_QRDetector(CBC_CommonBitMatrix* image) : m_image(image) {}
+CBC_QRDetector::~CBC_QRDetector() {}
+CBC_QRDetectorResult* CBC_QRDetector::Detect(int32_t hints, int32_t& e) {
+ CBC_QRFinderPatternFinder finder(m_image);
+ CBC_QRFinderPatternInfo* qpi = finder.Find(hints, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CBC_AutoPtr<CBC_QRFinderPatternInfo> info(qpi);
+ CBC_QRDetectorResult* qdr = ProcessFinderPatternInfo(info.get(), e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ return qdr;
+}
+CBC_QRDetectorResult* CBC_QRDetector::ProcessFinderPatternInfo(
+ CBC_QRFinderPatternInfo* info,
+ int32_t& e) {
+ CBC_AutoPtr<CBC_QRFinderPattern> topLeft(info->GetTopLeft());
+ CBC_AutoPtr<CBC_QRFinderPattern> topRight(info->GetTopRight());
+ CBC_AutoPtr<CBC_QRFinderPattern> bottomLeft(info->GetBottomLeft());
+ FX_FLOAT moduleSize =
+ CalculateModuleSize(topLeft.get(), topRight.get(), bottomLeft.get());
+ if (moduleSize < 1.0f) {
+ e = BCExceptionRead;
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ }
+ int32_t dimension = ComputeDimension(topLeft.get(), topRight.get(),
+ bottomLeft.get(), moduleSize, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CBC_QRCoderVersion* provisionalVersion =
+ CBC_QRCoderVersion::GetProvisionalVersionForDimension(dimension, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ int32_t modulesBetweenFPCenters =
+ provisionalVersion->GetDimensionForVersion() - 7;
+ CBC_QRAlignmentPattern* alignmentPattern = NULL;
+ if (provisionalVersion->GetAlignmentPatternCenters()->GetSize() > 0) {
+ FX_FLOAT bottomRightX =
+ topRight->GetX() - topLeft->GetX() + bottomLeft->GetX();
+ FX_FLOAT bottomRightY =
+ topRight->GetY() - topLeft->GetY() + bottomLeft->GetY();
+ FX_FLOAT correctionToTopLeft =
+ 1.0f - 3.0f / (FX_FLOAT)modulesBetweenFPCenters;
+ FX_FLOAT xtemp = (topLeft->GetX() +
+ correctionToTopLeft * (bottomRightX - topLeft->GetX()));
+ int32_t estAlignmentX = (int32_t)xtemp;
+ FX_FLOAT ytemp = (topLeft->GetY() +
+ correctionToTopLeft * (bottomRightY - topLeft->GetY()));
+ int32_t estAlignmentY = (int32_t)ytemp;
+ for (int32_t i = 4; i <= 16; i <<= 1) {
+ CBC_QRAlignmentPattern* temp = FindAlignmentInRegion(
+ moduleSize, estAlignmentX, estAlignmentY, (FX_FLOAT)i, e);
+ alignmentPattern = temp;
+ break;
+ }
+ }
+ CBC_CommonBitMatrix* bits =
+ SampleGrid(m_image, topLeft.get(), topRight.get(), bottomLeft.get(),
+ (CBC_ResultPoint*)(alignmentPattern), dimension, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CFX_PtrArray* points = new CFX_PtrArray;
+ if (alignmentPattern == NULL) {
+ points->Add(bottomLeft.release());
+ points->Add(topLeft.release());
+ points->Add(topRight.release());
+ } else {
+ points->Add(bottomLeft.release());
+ points->Add(topLeft.release());
+ points->Add(topRight.release());
+ points->Add(alignmentPattern);
+ }
+ return new CBC_QRDetectorResult(bits, points);
+}
+CBC_CommonBitMatrix* CBC_QRDetector::SampleGrid(
+ CBC_CommonBitMatrix* image,
+ CBC_ResultPoint* topLeft,
+ CBC_ResultPoint* topRight,
+ CBC_ResultPoint* bottomLeft,
+ CBC_ResultPoint* alignmentPattern,
+ int32_t dimension,
+ int32_t& e) {
+ FX_FLOAT dimMinusThree = (FX_FLOAT)dimension - 3.5f;
+ FX_FLOAT bottomRightX;
+ FX_FLOAT bottomRightY;
+ FX_FLOAT sourceBottomRightX;
+ FX_FLOAT sourceBottomRightY;
+ if (alignmentPattern != NULL) {
+ bottomRightX = alignmentPattern->GetX();
+ bottomRightY = alignmentPattern->GetY();
+ sourceBottomRightX = sourceBottomRightY = dimMinusThree - 3.0f;
+ } else {
+ bottomRightX = (topRight->GetX() - topLeft->GetX()) + bottomLeft->GetX();
+ bottomRightY = (topRight->GetY() - topLeft->GetY()) + bottomLeft->GetY();
+ sourceBottomRightX = sourceBottomRightY = dimMinusThree;
+ }
+ CBC_QRGridSampler& sampler = CBC_QRGridSampler::GetInstance();
+ CBC_CommonBitMatrix* cbm = sampler.SampleGrid(
+ image, dimension, dimension, 3.5f, 3.5f, dimMinusThree, 3.5f,
+ sourceBottomRightX, sourceBottomRightY, 3.5f, dimMinusThree,
+ topLeft->GetX(), topLeft->GetY(), topRight->GetX(), topRight->GetY(),
+ bottomRightX, bottomRightY, bottomLeft->GetX(), bottomLeft->GetY(), e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ return cbm;
+}
+int32_t CBC_QRDetector::ComputeDimension(CBC_ResultPoint* topLeft,
+ CBC_ResultPoint* topRight,
+ CBC_ResultPoint* bottomLeft,
+ FX_FLOAT moduleSize,
+ int32_t& e) {
+ int32_t tltrCentersDimension = Round(
+ CBC_QRFinderPatternFinder::Distance(topLeft, topRight) / moduleSize);
+ int32_t tlblCentersDimension = Round(
+ CBC_QRFinderPatternFinder::Distance(topLeft, bottomLeft) / moduleSize);
+ int32_t dimension = ((tltrCentersDimension + tlblCentersDimension) >> 1) + 7;
+ switch (dimension & 0x03) {
+ case 0:
+ dimension++;
+ break;
+ case 2:
+ dimension--;
+ break;
+ case 3: {
+ e = BCExceptionRead;
+ BC_EXCEPTION_CHECK_ReturnValue(e, 0);
+ }
+ }
+ return dimension;
+}
+FX_FLOAT CBC_QRDetector::CalculateModuleSize(CBC_ResultPoint* topLeft,
+ CBC_ResultPoint* topRight,
+ CBC_ResultPoint* bottomLeft) {
+ return (CalculateModuleSizeOneWay(topLeft, topRight) +
+ CalculateModuleSizeOneWay(topLeft, bottomLeft)) /
+ 2.0f;
+}
+FX_FLOAT CBC_QRDetector::CalculateModuleSizeOneWay(
+ CBC_ResultPoint* pattern,
+ CBC_ResultPoint* otherPattern) {
+ FX_FLOAT moduleSizeEst1 = SizeOfBlackWhiteBlackRunBothWays(
+ (int32_t)pattern->GetX(), (int32_t)pattern->GetY(),
+ (int32_t)otherPattern->GetX(), (int32_t)otherPattern->GetY());
+ FX_FLOAT moduleSizeEst2 = SizeOfBlackWhiteBlackRunBothWays(
+ (int32_t)otherPattern->GetX(), (int32_t)otherPattern->GetY(),
+ (int32_t)pattern->GetX(), (int32_t)pattern->GetY());
+ if (FXSYS_isnan(moduleSizeEst1)) {
+ return moduleSizeEst2;
+ }
+ if (FXSYS_isnan(moduleSizeEst2)) {
+ return moduleSizeEst1;
+ }
+ return (moduleSizeEst1 + moduleSizeEst2) / 14.0f;
+}
+int32_t CBC_QRDetector::Round(FX_FLOAT d) {
+ return (int32_t)(d + 0.5f);
+}
+FX_FLOAT CBC_QRDetector::SizeOfBlackWhiteBlackRunBothWays(int32_t fromX,
+ int32_t fromY,
+ int32_t toX,
+ int32_t toY) {
+ FX_FLOAT result = SizeOfBlackWhiteBlackRun(fromX, fromY, toX, toY);
+ int32_t otherToX = fromX - (toX - fromX);
+ if (otherToX < 0) {
+ otherToX = -1;
+ } else if (otherToX >= m_image->GetWidth()) {
+ otherToX = m_image->GetWidth();
+ }
+ int32_t otherToY = fromY - (toY - fromY);
+ if (otherToY < 0) {
+ otherToY = -1;
+ } else if (otherToY >= m_image->GetHeight()) {
+ otherToY = m_image->GetHeight();
+ }
+ result += SizeOfBlackWhiteBlackRun(fromX, fromY, otherToX, otherToY);
+ return result - 1.0f;
+}
+FX_FLOAT CBC_QRDetector::SizeOfBlackWhiteBlackRun(int32_t fromX,
+ int32_t fromY,
+ int32_t toX,
+ int32_t toY) {
+ 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 state = 0;
+ for (int32_t x = fromX, y = fromY; x != toX; x += xstep) {
+ int32_t realX = steep ? y : x;
+ int32_t realY = steep ? x : y;
+ if (state == 1) {
+ if (m_image->Get(realX, realY)) {
+ state++;
+ }
+ } else {
+ if (!m_image->Get(realX, realY)) {
+ state++;
+ }
+ }
+ if (state == 3) {
+ int32_t diffX = x - fromX;
+ int32_t diffY = y - fromY;
+ return (FX_FLOAT)sqrt((double)(diffX * diffX + diffY * diffY));
+ }
+ error += dy;
+ if (error > 0) {
+ y += ystep;
+ error -= dx;
+ }
+ }
+ int32_t diffX = toX - fromX;
+ int32_t diffY = toY - fromY;
+ return (FX_FLOAT)sqrt((double)(diffX * diffX + diffY * diffY));
+}
+CBC_QRAlignmentPattern* CBC_QRDetector::FindAlignmentInRegion(
+ FX_FLOAT overallEstModuleSize,
+ int32_t estAlignmentX,
+ int32_t estAlignmentY,
+ FX_FLOAT allowanceFactor,
+ int32_t& e) {
+ int32_t allowance = (int32_t)(allowanceFactor * overallEstModuleSize);
+ int32_t alignmentAreaLeftX = std::max(0, estAlignmentX - allowance);
+ int32_t alignmentAreaRightX =
+ std::min(m_image->GetWidth() - 1, estAlignmentX + allowance);
+ if (alignmentAreaRightX - alignmentAreaLeftX < overallEstModuleSize * 3) {
+ e = BCExceptionRead;
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ }
+ int32_t alignmentAreaTopY = std::max(0, estAlignmentY - allowance);
+ int32_t alignmentAreaBottomY =
+ std::min(m_image->GetHeight() - 1, estAlignmentY + allowance);
+ CBC_QRAlignmentPatternFinder alignmentFinder(
+ m_image, alignmentAreaLeftX, alignmentAreaTopY,
+ alignmentAreaRightX - alignmentAreaLeftX,
+ alignmentAreaBottomY - alignmentAreaTopY, overallEstModuleSize);
+ CBC_QRAlignmentPattern* qap = alignmentFinder.Find(e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ return qap;
+}
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