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Diffstat (limited to 'xfa/src/fxbarcode/common/BC_WhiteRectangleDetector.cpp')
-rw-r--r--xfa/src/fxbarcode/common/BC_WhiteRectangleDetector.cpp520
1 files changed, 260 insertions, 260 deletions
diff --git a/xfa/src/fxbarcode/common/BC_WhiteRectangleDetector.cpp b/xfa/src/fxbarcode/common/BC_WhiteRectangleDetector.cpp
index a01eaee3ac..a2d6c55067 100644
--- a/xfa/src/fxbarcode/common/BC_WhiteRectangleDetector.cpp
+++ b/xfa/src/fxbarcode/common/BC_WhiteRectangleDetector.cpp
@@ -1,260 +1,260 @@
-// 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 2010 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/barcode.h"
-#include "xfa/src/fxbarcode/common/BC_WhiteRectangleDetector.h"
-#include "xfa/src/fxbarcode/common/BC_CommonBitMatrix.h"
-#include "xfa/src/fxbarcode/BC_ResultPoint.h"
-const int32_t CBC_WhiteRectangleDetector::INIT_SIZE = 30;
-const int32_t CBC_WhiteRectangleDetector::CORR = 1;
-CBC_WhiteRectangleDetector::CBC_WhiteRectangleDetector(
- CBC_CommonBitMatrix* image) {
- m_image = image;
- m_height = image->GetHeight();
- m_width = image->GetWidth();
- m_leftInit = (m_width - INIT_SIZE) >> 1;
- m_rightInit = (m_width + INIT_SIZE) >> 1;
- m_upInit = (m_height - INIT_SIZE) >> 1;
- m_downInit = (m_height + INIT_SIZE) >> 1;
-}
-void CBC_WhiteRectangleDetector::Init(int32_t& e) {
- if (m_upInit < 0 || m_leftInit < 0 || m_downInit >= m_height ||
- m_rightInit >= m_width) {
- e = BCExceptionNotFound;
- BC_EXCEPTION_CHECK_ReturnVoid(e);
- }
-}
-CBC_WhiteRectangleDetector::CBC_WhiteRectangleDetector(
- CBC_CommonBitMatrix* image,
- int32_t initSize,
- int32_t x,
- int32_t y) {
- m_image = image;
- m_height = image->GetHeight();
- m_width = image->GetWidth();
- int32_t halfsize = initSize >> 1;
- m_leftInit = x - halfsize;
- m_rightInit = x + halfsize;
- m_upInit = y - halfsize;
- m_downInit = y + halfsize;
-}
-CBC_WhiteRectangleDetector::~CBC_WhiteRectangleDetector() {}
-CFX_PtrArray* CBC_WhiteRectangleDetector::Detect(int32_t& e) {
- int32_t left = m_leftInit;
- int32_t right = m_rightInit;
- int32_t up = m_upInit;
- int32_t down = m_downInit;
- FX_BOOL sizeExceeded = FALSE;
- FX_BOOL aBlackPointFoundOnBorder = TRUE;
- FX_BOOL atLeastOneBlackPointFoundOnBorder = FALSE;
- while (aBlackPointFoundOnBorder) {
- aBlackPointFoundOnBorder = FALSE;
- FX_BOOL rightBorderNotWhite = TRUE;
- while (rightBorderNotWhite && right < m_width) {
- rightBorderNotWhite = ContainsBlackPoint(up, down, right, FALSE);
- if (rightBorderNotWhite) {
- right++;
- aBlackPointFoundOnBorder = TRUE;
- }
- }
- if (right >= m_width) {
- sizeExceeded = TRUE;
- break;
- }
- FX_BOOL bottomBorderNotWhite = TRUE;
- while (bottomBorderNotWhite && down < m_height) {
- bottomBorderNotWhite = ContainsBlackPoint(left, right, down, TRUE);
- if (bottomBorderNotWhite) {
- down++;
- aBlackPointFoundOnBorder = TRUE;
- }
- }
- if (down >= m_height) {
- sizeExceeded = TRUE;
- break;
- }
- FX_BOOL leftBorderNotWhite = TRUE;
- while (leftBorderNotWhite && left >= 0) {
- leftBorderNotWhite = ContainsBlackPoint(up, down, left, FALSE);
- if (leftBorderNotWhite) {
- left--;
- aBlackPointFoundOnBorder = TRUE;
- }
- }
- if (left < 0) {
- sizeExceeded = TRUE;
- break;
- }
- FX_BOOL topBorderNotWhite = TRUE;
- while (topBorderNotWhite && up >= 0) {
- topBorderNotWhite = ContainsBlackPoint(left, right, up, TRUE);
- if (topBorderNotWhite) {
- up--;
- aBlackPointFoundOnBorder = TRUE;
- }
- }
- if (up < 0) {
- sizeExceeded = TRUE;
- break;
- }
- if (aBlackPointFoundOnBorder) {
- atLeastOneBlackPointFoundOnBorder = TRUE;
- }
- }
- if (!sizeExceeded && atLeastOneBlackPointFoundOnBorder) {
- int32_t maxSize = right - left;
- CBC_AutoPtr<CBC_ResultPoint> z(NULL);
- for (int32_t i = 1; i < maxSize; i++) {
- z = CBC_AutoPtr<CBC_ResultPoint>(
- GetBlackPointOnSegment((FX_FLOAT)left, (FX_FLOAT)(down - i),
- (FX_FLOAT)(left + i), (FX_FLOAT)(down)));
- if (z.get() != NULL) {
- break;
- }
- }
- if (z.get() == NULL) {
- e = BCExceptionNotFound;
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- }
- CBC_AutoPtr<CBC_ResultPoint> t(NULL);
- for (int32_t j = 1; j < maxSize; j++) {
- t = CBC_AutoPtr<CBC_ResultPoint>(
- GetBlackPointOnSegment((FX_FLOAT)left, (FX_FLOAT)(up + j),
- (FX_FLOAT)(left + j), (FX_FLOAT)up));
- if (t.get() != NULL) {
- break;
- }
- }
- if (t.get() == NULL) {
- e = BCExceptionNotFound;
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- }
- CBC_AutoPtr<CBC_ResultPoint> x(NULL);
- for (int32_t k = 1; k < maxSize; k++) {
- x = CBC_AutoPtr<CBC_ResultPoint>(
- GetBlackPointOnSegment((FX_FLOAT)right, (FX_FLOAT)(up + k),
- (FX_FLOAT)(right - k), (FX_FLOAT)up));
- if (x.get() != NULL) {
- break;
- }
- }
- if (x.get() == NULL) {
- e = BCExceptionNotFound;
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- }
- CBC_AutoPtr<CBC_ResultPoint> y(NULL);
- for (int32_t m = 1; m < maxSize; m++) {
- y = CBC_AutoPtr<CBC_ResultPoint>(
- GetBlackPointOnSegment((FX_FLOAT)right, (FX_FLOAT)(down - m),
- (FX_FLOAT)(right - m), (FX_FLOAT)down));
- if (y.get() != NULL) {
- break;
- }
- }
- if (y.get() == NULL) {
- e = BCExceptionNotFound;
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- }
- return CenterEdges(y.get(), z.get(), x.get(), t.get());
- } else {
- e = BCExceptionNotFound;
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- }
- return NULL;
-}
-int32_t CBC_WhiteRectangleDetector::Round(FX_FLOAT d) {
- return (int32_t)(d + 0.5f);
-}
-CBC_ResultPoint* CBC_WhiteRectangleDetector::GetBlackPointOnSegment(
- FX_FLOAT aX,
- FX_FLOAT aY,
- FX_FLOAT bX,
- FX_FLOAT bY) {
- int32_t dist = DistanceL2(aX, aY, bX, bY);
- float xStep = (bX - aX) / dist;
- float yStep = (bY - aY) / dist;
- for (int32_t i = 0; i < dist; i++) {
- int32_t x = Round(aX + i * xStep);
- int32_t y = Round(aY + i * yStep);
- if (m_image->Get(x, y)) {
- return new CBC_ResultPoint((FX_FLOAT)x, (FX_FLOAT)y);
- }
- }
- return NULL;
-}
-int32_t CBC_WhiteRectangleDetector::DistanceL2(FX_FLOAT aX,
- FX_FLOAT aY,
- FX_FLOAT bX,
- FX_FLOAT bY) {
- float xDiff = aX - bX;
- float yDiff = aY - bY;
- return Round((float)sqrt(xDiff * xDiff + yDiff * yDiff));
-}
-CFX_PtrArray* CBC_WhiteRectangleDetector::CenterEdges(CBC_ResultPoint* y,
- CBC_ResultPoint* z,
- CBC_ResultPoint* x,
- CBC_ResultPoint* t) {
- float yi = y->GetX();
- float yj = y->GetY();
- float zi = z->GetX();
- float zj = z->GetY();
- float xi = x->GetX();
- float xj = x->GetY();
- float ti = t->GetX();
- float tj = t->GetY();
- if (yi < m_width / 2) {
- CFX_PtrArray* result = new CFX_PtrArray;
- result->SetSize(4);
- (*result)[0] = new CBC_ResultPoint(ti - CORR, tj + CORR);
- (*result)[1] = new CBC_ResultPoint(zi + CORR, zj + CORR);
- (*result)[2] = new CBC_ResultPoint(xi - CORR, xj - CORR);
- (*result)[3] = new CBC_ResultPoint(yi + CORR, yj - CORR);
- return result;
- } else {
- CFX_PtrArray* result = new CFX_PtrArray;
- result->SetSize(4);
- (*result)[0] = new CBC_ResultPoint(ti + CORR, tj + CORR);
- (*result)[1] = new CBC_ResultPoint(zi + CORR, zj - CORR);
- (*result)[2] = new CBC_ResultPoint(xi - CORR, xj + CORR);
- (*result)[3] = new CBC_ResultPoint(yi - CORR, yj - CORR);
- return result;
- }
-}
-FX_BOOL CBC_WhiteRectangleDetector::ContainsBlackPoint(int32_t a,
- int32_t b,
- int32_t fixed,
- FX_BOOL horizontal) {
- if (horizontal) {
- for (int32_t x = a; x <= b; x++) {
- if (m_image->Get(x, fixed)) {
- return TRUE;
- }
- }
- } else {
- for (int32_t y = a; y <= b; y++) {
- if (m_image->Get(fixed, y)) {
- return TRUE;
- }
- }
- }
- return FALSE;
-}
+// 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 2010 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/barcode.h"
+#include "xfa/src/fxbarcode/common/BC_WhiteRectangleDetector.h"
+#include "xfa/src/fxbarcode/common/BC_CommonBitMatrix.h"
+#include "xfa/src/fxbarcode/BC_ResultPoint.h"
+const int32_t CBC_WhiteRectangleDetector::INIT_SIZE = 30;
+const int32_t CBC_WhiteRectangleDetector::CORR = 1;
+CBC_WhiteRectangleDetector::CBC_WhiteRectangleDetector(
+ CBC_CommonBitMatrix* image) {
+ m_image = image;
+ m_height = image->GetHeight();
+ m_width = image->GetWidth();
+ m_leftInit = (m_width - INIT_SIZE) >> 1;
+ m_rightInit = (m_width + INIT_SIZE) >> 1;
+ m_upInit = (m_height - INIT_SIZE) >> 1;
+ m_downInit = (m_height + INIT_SIZE) >> 1;
+}
+void CBC_WhiteRectangleDetector::Init(int32_t& e) {
+ if (m_upInit < 0 || m_leftInit < 0 || m_downInit >= m_height ||
+ m_rightInit >= m_width) {
+ e = BCExceptionNotFound;
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ }
+}
+CBC_WhiteRectangleDetector::CBC_WhiteRectangleDetector(
+ CBC_CommonBitMatrix* image,
+ int32_t initSize,
+ int32_t x,
+ int32_t y) {
+ m_image = image;
+ m_height = image->GetHeight();
+ m_width = image->GetWidth();
+ int32_t halfsize = initSize >> 1;
+ m_leftInit = x - halfsize;
+ m_rightInit = x + halfsize;
+ m_upInit = y - halfsize;
+ m_downInit = y + halfsize;
+}
+CBC_WhiteRectangleDetector::~CBC_WhiteRectangleDetector() {}
+CFX_PtrArray* CBC_WhiteRectangleDetector::Detect(int32_t& e) {
+ int32_t left = m_leftInit;
+ int32_t right = m_rightInit;
+ int32_t up = m_upInit;
+ int32_t down = m_downInit;
+ FX_BOOL sizeExceeded = FALSE;
+ FX_BOOL aBlackPointFoundOnBorder = TRUE;
+ FX_BOOL atLeastOneBlackPointFoundOnBorder = FALSE;
+ while (aBlackPointFoundOnBorder) {
+ aBlackPointFoundOnBorder = FALSE;
+ FX_BOOL rightBorderNotWhite = TRUE;
+ while (rightBorderNotWhite && right < m_width) {
+ rightBorderNotWhite = ContainsBlackPoint(up, down, right, FALSE);
+ if (rightBorderNotWhite) {
+ right++;
+ aBlackPointFoundOnBorder = TRUE;
+ }
+ }
+ if (right >= m_width) {
+ sizeExceeded = TRUE;
+ break;
+ }
+ FX_BOOL bottomBorderNotWhite = TRUE;
+ while (bottomBorderNotWhite && down < m_height) {
+ bottomBorderNotWhite = ContainsBlackPoint(left, right, down, TRUE);
+ if (bottomBorderNotWhite) {
+ down++;
+ aBlackPointFoundOnBorder = TRUE;
+ }
+ }
+ if (down >= m_height) {
+ sizeExceeded = TRUE;
+ break;
+ }
+ FX_BOOL leftBorderNotWhite = TRUE;
+ while (leftBorderNotWhite && left >= 0) {
+ leftBorderNotWhite = ContainsBlackPoint(up, down, left, FALSE);
+ if (leftBorderNotWhite) {
+ left--;
+ aBlackPointFoundOnBorder = TRUE;
+ }
+ }
+ if (left < 0) {
+ sizeExceeded = TRUE;
+ break;
+ }
+ FX_BOOL topBorderNotWhite = TRUE;
+ while (topBorderNotWhite && up >= 0) {
+ topBorderNotWhite = ContainsBlackPoint(left, right, up, TRUE);
+ if (topBorderNotWhite) {
+ up--;
+ aBlackPointFoundOnBorder = TRUE;
+ }
+ }
+ if (up < 0) {
+ sizeExceeded = TRUE;
+ break;
+ }
+ if (aBlackPointFoundOnBorder) {
+ atLeastOneBlackPointFoundOnBorder = TRUE;
+ }
+ }
+ if (!sizeExceeded && atLeastOneBlackPointFoundOnBorder) {
+ int32_t maxSize = right - left;
+ CBC_AutoPtr<CBC_ResultPoint> z(NULL);
+ for (int32_t i = 1; i < maxSize; i++) {
+ z = CBC_AutoPtr<CBC_ResultPoint>(
+ GetBlackPointOnSegment((FX_FLOAT)left, (FX_FLOAT)(down - i),
+ (FX_FLOAT)(left + i), (FX_FLOAT)(down)));
+ if (z.get() != NULL) {
+ break;
+ }
+ }
+ if (z.get() == NULL) {
+ e = BCExceptionNotFound;
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ }
+ CBC_AutoPtr<CBC_ResultPoint> t(NULL);
+ for (int32_t j = 1; j < maxSize; j++) {
+ t = CBC_AutoPtr<CBC_ResultPoint>(
+ GetBlackPointOnSegment((FX_FLOAT)left, (FX_FLOAT)(up + j),
+ (FX_FLOAT)(left + j), (FX_FLOAT)up));
+ if (t.get() != NULL) {
+ break;
+ }
+ }
+ if (t.get() == NULL) {
+ e = BCExceptionNotFound;
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ }
+ CBC_AutoPtr<CBC_ResultPoint> x(NULL);
+ for (int32_t k = 1; k < maxSize; k++) {
+ x = CBC_AutoPtr<CBC_ResultPoint>(
+ GetBlackPointOnSegment((FX_FLOAT)right, (FX_FLOAT)(up + k),
+ (FX_FLOAT)(right - k), (FX_FLOAT)up));
+ if (x.get() != NULL) {
+ break;
+ }
+ }
+ if (x.get() == NULL) {
+ e = BCExceptionNotFound;
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ }
+ CBC_AutoPtr<CBC_ResultPoint> y(NULL);
+ for (int32_t m = 1; m < maxSize; m++) {
+ y = CBC_AutoPtr<CBC_ResultPoint>(
+ GetBlackPointOnSegment((FX_FLOAT)right, (FX_FLOAT)(down - m),
+ (FX_FLOAT)(right - m), (FX_FLOAT)down));
+ if (y.get() != NULL) {
+ break;
+ }
+ }
+ if (y.get() == NULL) {
+ e = BCExceptionNotFound;
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ }
+ return CenterEdges(y.get(), z.get(), x.get(), t.get());
+ } else {
+ e = BCExceptionNotFound;
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ }
+ return NULL;
+}
+int32_t CBC_WhiteRectangleDetector::Round(FX_FLOAT d) {
+ return (int32_t)(d + 0.5f);
+}
+CBC_ResultPoint* CBC_WhiteRectangleDetector::GetBlackPointOnSegment(
+ FX_FLOAT aX,
+ FX_FLOAT aY,
+ FX_FLOAT bX,
+ FX_FLOAT bY) {
+ int32_t dist = DistanceL2(aX, aY, bX, bY);
+ float xStep = (bX - aX) / dist;
+ float yStep = (bY - aY) / dist;
+ for (int32_t i = 0; i < dist; i++) {
+ int32_t x = Round(aX + i * xStep);
+ int32_t y = Round(aY + i * yStep);
+ if (m_image->Get(x, y)) {
+ return new CBC_ResultPoint((FX_FLOAT)x, (FX_FLOAT)y);
+ }
+ }
+ return NULL;
+}
+int32_t CBC_WhiteRectangleDetector::DistanceL2(FX_FLOAT aX,
+ FX_FLOAT aY,
+ FX_FLOAT bX,
+ FX_FLOAT bY) {
+ float xDiff = aX - bX;
+ float yDiff = aY - bY;
+ return Round((float)sqrt(xDiff * xDiff + yDiff * yDiff));
+}
+CFX_PtrArray* CBC_WhiteRectangleDetector::CenterEdges(CBC_ResultPoint* y,
+ CBC_ResultPoint* z,
+ CBC_ResultPoint* x,
+ CBC_ResultPoint* t) {
+ float yi = y->GetX();
+ float yj = y->GetY();
+ float zi = z->GetX();
+ float zj = z->GetY();
+ float xi = x->GetX();
+ float xj = x->GetY();
+ float ti = t->GetX();
+ float tj = t->GetY();
+ if (yi < m_width / 2) {
+ CFX_PtrArray* result = new CFX_PtrArray;
+ result->SetSize(4);
+ (*result)[0] = new CBC_ResultPoint(ti - CORR, tj + CORR);
+ (*result)[1] = new CBC_ResultPoint(zi + CORR, zj + CORR);
+ (*result)[2] = new CBC_ResultPoint(xi - CORR, xj - CORR);
+ (*result)[3] = new CBC_ResultPoint(yi + CORR, yj - CORR);
+ return result;
+ } else {
+ CFX_PtrArray* result = new CFX_PtrArray;
+ result->SetSize(4);
+ (*result)[0] = new CBC_ResultPoint(ti + CORR, tj + CORR);
+ (*result)[1] = new CBC_ResultPoint(zi + CORR, zj - CORR);
+ (*result)[2] = new CBC_ResultPoint(xi - CORR, xj + CORR);
+ (*result)[3] = new CBC_ResultPoint(yi - CORR, yj - CORR);
+ return result;
+ }
+}
+FX_BOOL CBC_WhiteRectangleDetector::ContainsBlackPoint(int32_t a,
+ int32_t b,
+ int32_t fixed,
+ FX_BOOL horizontal) {
+ if (horizontal) {
+ for (int32_t x = a; x <= b; x++) {
+ if (m_image->Get(x, fixed)) {
+ return TRUE;
+ }
+ }
+ } else {
+ for (int32_t y = a; y <= b; y++) {
+ if (m_image->Get(fixed, y)) {
+ return TRUE;
+ }
+ }
+ }
+ return FALSE;
+}
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