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, 257 insertions, 0 deletions

diff --git a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp
new file mode 100644
index 0000000000..6476e4cf80
--- /dev/null
+++ b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp
@@ -0,0 +1,257 @@
+// 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 "../../barcode.h"

+#include "BC_ReedSolomonGF256.h"

+#include "BC_ReedSolomonGF256Poly.h"

+CBC_ReedSolomonGF256Poly::CBC_ReedSolomonGF256Poly(CBC_ReedSolomonGF256* field, FX_INT32 coefficients)

+{

+    if(field == NULL) {

+        return;

+    }

+    m_field = field;

+    m_coefficients.Add(coefficients);

+}

+CBC_ReedSolomonGF256Poly::CBC_ReedSolomonGF256Poly()

+{

+    m_field = NULL;

+}

+void CBC_ReedSolomonGF256Poly::Init(CBC_ReedSolomonGF256* field, CFX_Int32Array* coefficients, FX_INT32 &e)

+{

+    if(coefficients == NULL || coefficients->GetSize() == 0) {

+        e = BCExceptionCoefficientsSizeIsNull;

+        BC_EXCEPTION_CHECK_ReturnVoid(e);

+    }

+    m_field = field;

+    FX_INT32 coefficientsLength = coefficients->GetSize();

+    if((coefficientsLength > 1 && (*coefficients)[0] == 0)) {

+        FX_INT32 firstNonZero = 1;

+        while((firstNonZero < coefficientsLength) && ((*coefficients)[firstNonZero] == 0)) {

+            firstNonZero++;

+        }

+        if(firstNonZero == coefficientsLength) {

+            m_coefficients.Copy( *(m_field->GetZero()->GetCoefficients()));

+        } else {

+            m_coefficients.SetSize(coefficientsLength - firstNonZero);

+            for(FX_INT32 i = firstNonZero, j = 0; i < coefficientsLength; i++, j++) {

+                m_coefficients[j] = coefficients->operator [](i);

+            }

+        }

+    } else {

+        m_coefficients.Copy(*coefficients);

+    }

+}

+CFX_Int32Array* CBC_ReedSolomonGF256Poly::GetCoefficients()

+{

+    return &m_coefficients;

+}

+FX_INT32 CBC_ReedSolomonGF256Poly::GetDegree()

+{

+    return m_coefficients.GetSize() - 1;

+}

+FX_BOOL CBC_ReedSolomonGF256Poly::IsZero()

+{

+    return m_coefficients[0] == 0;

+}

+FX_INT32 CBC_ReedSolomonGF256Poly::GetCoefficients(FX_INT32 degree)

+{

+    return m_coefficients[m_coefficients.GetSize() - 1 - degree];

+}

+FX_INT32 CBC_ReedSolomonGF256Poly::EvaluateAt(FX_INT32 a)

+{

+    if(a == 0) {

+        return GetCoefficients(0);

+    }

+    FX_INT32 size = m_coefficients.GetSize();

+    if(a == 1) {

+        FX_INT32 result = 0;

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

+            result = CBC_ReedSolomonGF256::AddOrSubtract(result, m_coefficients[i]);

+        }

+        return result;

+    }

+    FX_INT32 result = m_coefficients[0];

+    for(FX_INT32 j = 1; j < size; j++) {

+        result = CBC_ReedSolomonGF256::AddOrSubtract(

+                     m_field->Multiply(a, result),

+                     m_coefficients[j]);

+    }

+    return result;

+}

+CBC_ReedSolomonGF256Poly *CBC_ReedSolomonGF256Poly::Clone(FX_INT32 &e)

+{

+    CBC_ReedSolomonGF256Poly *temp  = FX_NEW CBC_ReedSolomonGF256Poly();

+    temp->Init(m_field, &m_coefficients, e);

+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    return temp;

+}

+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::AddOrSubtract(CBC_ReedSolomonGF256Poly* other, FX_INT32 &e)

+{

+    if(IsZero()) {

+        return other->Clone(e);

+        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    }

+    if(other->IsZero()) {

+        return this->Clone(e);

+        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    }

+    CFX_Int32Array smallerCoefficients;

+    smallerCoefficients.Copy(m_coefficients);

+    CFX_Int32Array largerCoefficients;

+    largerCoefficients.Copy( *(other->GetCoefficients()));

+    if(smallerCoefficients.GetSize() > largerCoefficients.GetSize()) {

+        CFX_Int32Array temp;

+        temp.Copy(smallerCoefficients);

+        smallerCoefficients.Copy(largerCoefficients);

+        largerCoefficients.Copy(temp);

+    }

+    CFX_Int32Array sumDiff;

+    sumDiff.SetSize(largerCoefficients.GetSize() );

+    FX_INT32 lengthDiff = largerCoefficients.GetSize() - smallerCoefficients.GetSize();

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

+        sumDiff[i] = largerCoefficients[i];

+    }

+    for(FX_INT32 j = lengthDiff; j < largerCoefficients.GetSize(); j++) {

+        sumDiff[j] = (CBC_ReedSolomonGF256::AddOrSubtract(smallerCoefficients[j - lengthDiff],

+                      largerCoefficients[j]));

+    }

+    CBC_ReedSolomonGF256Poly *temp = FX_NEW CBC_ReedSolomonGF256Poly();

+    temp->Init(m_field, &sumDiff, e);

+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    return temp;

+}

+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::Multiply(CBC_ReedSolomonGF256Poly* other, FX_INT32 &e)

+{

+    if(IsZero() || other->IsZero()) {

+        CBC_ReedSolomonGF256Poly *temp = m_field->GetZero()->Clone(e);

+        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+        return temp;

+    }

+    CFX_Int32Array aCoefficients ;

+    aCoefficients.Copy(m_coefficients);

+    FX_INT32 aLength = m_coefficients.GetSize();

+    CFX_Int32Array bCoefficients;

+    bCoefficients.Copy(*(other->GetCoefficients()));

+    FX_INT32 bLength = other->GetCoefficients()->GetSize();

+    CFX_Int32Array product;

+    product.SetSize(aLength + bLength - 1);

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

+        FX_INT32 aCoeff = m_coefficients[i];

+        for(FX_INT32 j = 0; j < bLength; j++) {

+            product[i + j] = CBC_ReedSolomonGF256::AddOrSubtract(

+                                 product[i + j],

+                                 m_field->Multiply(aCoeff, other->GetCoefficients()->operator [](j)));

+        }

+    }

+    CBC_ReedSolomonGF256Poly *temp = FX_NEW CBC_ReedSolomonGF256Poly();

+    temp->Init(m_field, &product, e);

+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    return temp;

+}

+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::Multiply(FX_INT32 scalar, FX_INT32 &e)

+{

+    if(scalar == 0) {

+        CBC_ReedSolomonGF256Poly *temp = m_field->GetZero()->Clone(e);

+        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+        return temp;

+    }

+    if(scalar == 1) {

+        return this->Clone(e);

+        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    }

+    FX_INT32 size = m_coefficients.GetSize();

+    CFX_Int32Array product;

+    product.SetSize(size);

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

+        product[i] = m_field->Multiply(m_coefficients[i], scalar);

+    }

+    CBC_ReedSolomonGF256Poly *temp = FX_NEW CBC_ReedSolomonGF256Poly();

+    temp->Init(m_field, &product, e);

+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    return temp;

+}

+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::MultiplyByMonomial(FX_INT32 degree, FX_INT32 coefficient, FX_INT32 &e)

+{

+    if(degree < 0) {

+        e = BCExceptionDegreeIsNegative;

+        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    }

+    if(coefficient == 0) {

+        CBC_ReedSolomonGF256Poly *temp = m_field->GetZero()->Clone(e);

+        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+        return temp;

+    }

+    FX_INT32 size = m_coefficients.GetSize();

+    CFX_Int32Array product;

+    product.SetSize(size + degree);

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

+        product[i] = (m_field->Multiply(m_coefficients[i], coefficient));

+    }

+    CBC_ReedSolomonGF256Poly *temp = FX_NEW CBC_ReedSolomonGF256Poly();

+    temp->Init(m_field, &product, e);

+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    return temp;

+}

+CFX_PtrArray* CBC_ReedSolomonGF256Poly::Divide(CBC_ReedSolomonGF256Poly *other, FX_INT32 &e)

+{

+    if(other->IsZero()) {

+        e = BCExceptionDivideByZero;

+        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    }

+    CBC_ReedSolomonGF256Poly* rsg1 = m_field->GetZero()->Clone(e);

+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    CBC_AutoPtr<CBC_ReedSolomonGF256Poly> quotient(rsg1);

+    CBC_ReedSolomonGF256Poly* rsg2 = this->Clone(e);

+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    CBC_AutoPtr<CBC_ReedSolomonGF256Poly> remainder(rsg2);

+    FX_INT32 denominatorLeadingTerm = other->GetCoefficients(other->GetDegree());

+    FX_INT32 inverseDenominatorLeadingTeam = m_field->Inverse(denominatorLeadingTerm, e);

+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+    FX_BOOL bFirst = TRUE;

+    while(remainder->GetDegree() >= other->GetDegree() && !remainder->IsZero()) {

+        FX_INT32 degreeDifference = remainder->GetDegree() - other->GetDegree();

+        FX_INT32 scale = m_field->Multiply(remainder->GetCoefficients((remainder->GetDegree())),

+                                           inverseDenominatorLeadingTeam);

+        CBC_ReedSolomonGF256Poly* rsg3 = other->MultiplyByMonomial(degreeDifference, scale, e);

+        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+        CBC_AutoPtr<CBC_ReedSolomonGF256Poly> term(rsg3);

+        CBC_ReedSolomonGF256Poly* rsg4 = m_field->BuildMonomial(degreeDifference, scale, e);

+        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+        CBC_AutoPtr<CBC_ReedSolomonGF256Poly> iteratorQuotient(rsg4);

+        CBC_ReedSolomonGF256Poly* rsg5 = quotient->AddOrSubtract(iteratorQuotient.get(), e);

+        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+        CBC_AutoPtr<CBC_ReedSolomonGF256Poly> temp(rsg5);

+        quotient = temp;

+        CBC_ReedSolomonGF256Poly* rsg6 = remainder->AddOrSubtract(term.get(), e);

+        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);

+        CBC_AutoPtr<CBC_ReedSolomonGF256Poly> temp1(rsg6);

+        remainder = temp1;

+    }

+    CFX_PtrArray* tempPtrA = FX_NEW CFX_PtrArray;

+    tempPtrA->Add(quotient.release());

+    tempPtrA->Add(remainder.release());

+    return tempPtrA;

+}

+CBC_ReedSolomonGF256Poly::~CBC_ReedSolomonGF256Poly()

+{

+    m_coefficients.RemoveAll();

+}