Organize barcode codes into modules.

Previously all the files in barcode are lumped together.
The naming of some files are inconsistent,
leading to difficult understanding of the structure.
Now files are grouped based on different barcode type like in zxing.
This also matches what it looks like in other xfa folders.
The file names in each folder could be further modified to be consistent.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/842043002

1 files changed, 244 insertions, 0 deletions

diff --git a/xfa/src/fxbarcode/common/BC_WhiteRectangleDetector.cpp b/xfa/src/fxbarcode/common/BC_WhiteRectangleDetector.cpp
new file mode 100644
index 0000000000..8bc93136ca
--- /dev/null
+++ b/xfa/src/fxbarcode/common/BC_WhiteRectangleDetector.cpp
@@ -0,0 +1,244 @@
+// 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 "../barcode.h"

+#include "BC_WhiteRectangleDetector.h"

+#include "BC_CommonBitMatrix.h"

+#include "../BC_ResultPoint.h"

+const FX_INT32 CBC_WhiteRectangleDetector::INIT_SIZE = 30;

+const FX_INT32 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(FX_INT32 &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, FX_INT32 initSize, FX_INT32 x, FX_INT32 y)

+{

+    m_image = image;

+    m_height = image->GetHeight();

+    m_width = image->GetWidth();

+    FX_INT32 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(FX_INT32 &e)

+{

+    FX_INT32 left = m_leftInit;

+    FX_INT32 right = m_rightInit;

+    FX_INT32 up = m_upInit;

+    FX_INT32 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) {

+        FX_INT32 maxSize = right - left;

+        CBC_AutoPtr<CBC_ResultPoint> z(NULL);

+        for (FX_INT32 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 (FX_INT32 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 (FX_INT32 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 (FX_INT32 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;

+}

+FX_INT32 CBC_WhiteRectangleDetector::Round(FX_FLOAT d)

+{

+    return (FX_INT32) (d + 0.5f);

+}

+CBC_ResultPoint *CBC_WhiteRectangleDetector::GetBlackPointOnSegment(FX_FLOAT aX, FX_FLOAT aY, FX_FLOAT bX, FX_FLOAT bY)

+{

+    FX_INT32 dist = DistanceL2(aX, aY, bX, bY);

+    float xStep = (bX - aX) / dist;

+    float yStep = (bY - aY) / dist;

+    for (FX_INT32 i = 0; i < dist; i++) {

+        FX_INT32 x = Round(aX + i * xStep);

+        FX_INT32 y = Round(aY + i * yStep);

+        if (m_image->Get(x, y)) {

+            return FX_NEW CBC_ResultPoint((FX_FLOAT)x, (FX_FLOAT) y);

+        }

+    }

+    return NULL;

+}

+FX_INT32 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 = FX_NEW CFX_PtrArray;

+        result->SetSize(4);

+        (*result)[0] = FX_NEW CBC_ResultPoint(ti - CORR, tj + CORR);

+        (*result)[1] = FX_NEW CBC_ResultPoint(zi + CORR, zj + CORR);

+        (*result)[2] = FX_NEW CBC_ResultPoint(xi - CORR, xj - CORR);

+        (*result)[3] = FX_NEW CBC_ResultPoint(yi + CORR, yj - CORR);

+        return result;

+    } else {

+        CFX_PtrArray *result = FX_NEW CFX_PtrArray;

+        result->SetSize(4);

+        (*result)[0] = FX_NEW CBC_ResultPoint(ti + CORR, tj + CORR);

+        (*result)[1] = FX_NEW CBC_ResultPoint(zi + CORR, zj - CORR);

+        (*result)[2] = FX_NEW CBC_ResultPoint(xi - CORR, xj + CORR);

+        (*result)[3] = FX_NEW CBC_ResultPoint(yi - CORR, yj - CORR);

+        return result;

+    }

+}

+FX_BOOL CBC_WhiteRectangleDetector::ContainsBlackPoint(FX_INT32 a, FX_INT32 b, FX_INT32 fixed, FX_BOOL horizontal)

+{

+    if (horizontal) {

+        for (FX_INT32 x = a; x <= b; x++) {

+            if (m_image->Get(x, fixed)) {

+                return TRUE;

+            }

+        }

+    } else {

+        for (FX_INT32 y = a; y <= b; y++) {

+            if (m_image->Get(fixed, y)) {

+                return TRUE;

+            }

+        }

+    }

+    return FALSE;

+}