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path: root/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp
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Diffstat (limited to 'xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp')
-rw-r--r--xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp254
1 files changed, 0 insertions, 254 deletions
diff --git a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp
deleted file mode 100644
index f138009ffa..0000000000
--- a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp
+++ /dev/null
@@ -1,254 +0,0 @@
-// 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/common/reedsolomon/BC_ReedSolomonGF256Poly.h"
-
-#include <memory>
-
-#include "xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h"
-
-CBC_ReedSolomonGF256Poly::CBC_ReedSolomonGF256Poly(CBC_ReedSolomonGF256* field,
- int32_t 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,
- int32_t& e) {
- if (coefficients == NULL || coefficients->GetSize() == 0) {
- e = BCExceptionCoefficientsSizeIsNull;
- BC_EXCEPTION_CHECK_ReturnVoid(e);
- }
- m_field = field;
- int32_t coefficientsLength = coefficients->GetSize();
- if ((coefficientsLength > 1 && (*coefficients)[0] == 0)) {
- int32_t 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 (int32_t 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;
-}
-int32_t CBC_ReedSolomonGF256Poly::GetDegree() {
- return m_coefficients.GetSize() - 1;
-}
-FX_BOOL CBC_ReedSolomonGF256Poly::IsZero() {
- return m_coefficients[0] == 0;
-}
-int32_t CBC_ReedSolomonGF256Poly::GetCoefficients(int32_t degree) {
- return m_coefficients[m_coefficients.GetSize() - 1 - degree];
-}
-int32_t CBC_ReedSolomonGF256Poly::EvaluateAt(int32_t a) {
- if (a == 0) {
- return GetCoefficients(0);
- }
- int32_t size = m_coefficients.GetSize();
- if (a == 1) {
- int32_t result = 0;
- for (int32_t i = 0; i < size; i++) {
- result = CBC_ReedSolomonGF256::AddOrSubtract(result, m_coefficients[i]);
- }
- return result;
- }
- int32_t result = m_coefficients[0];
- for (int32_t j = 1; j < size; j++) {
- result = CBC_ReedSolomonGF256::AddOrSubtract(m_field->Multiply(a, result),
- m_coefficients[j]);
- }
- return result;
-}
-CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::Clone(int32_t& e) {
- CBC_ReedSolomonGF256Poly* temp = 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,
- int32_t& e) {
- if (IsZero()) {
- return other->Clone(e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- }
- if (other->IsZero()) {
- return 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());
- int32_t lengthDiff =
- largerCoefficients.GetSize() - smallerCoefficients.GetSize();
- for (int32_t i = 0; i < lengthDiff; i++) {
- sumDiff[i] = largerCoefficients[i];
- }
- for (int32_t j = lengthDiff; j < largerCoefficients.GetSize(); j++) {
- sumDiff[j] = (CBC_ReedSolomonGF256::AddOrSubtract(
- smallerCoefficients[j - lengthDiff], largerCoefficients[j]));
- }
- CBC_ReedSolomonGF256Poly* temp = 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,
- int32_t& 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);
- int32_t aLength = m_coefficients.GetSize();
- CFX_Int32Array bCoefficients;
- bCoefficients.Copy(*(other->GetCoefficients()));
- int32_t bLength = other->GetCoefficients()->GetSize();
- CFX_Int32Array product;
- product.SetSize(aLength + bLength - 1);
- for (int32_t i = 0; i < aLength; i++) {
- int32_t aCoeff = m_coefficients[i];
- for (int32_t 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 = new CBC_ReedSolomonGF256Poly();
- temp->Init(m_field, &product, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- return temp;
-}
-CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::Multiply(int32_t scalar,
- int32_t& e) {
- if (scalar == 0) {
- CBC_ReedSolomonGF256Poly* temp = m_field->GetZero()->Clone(e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- return temp;
- }
- if (scalar == 1) {
- return Clone(e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- }
- int32_t size = m_coefficients.GetSize();
- CFX_Int32Array product;
- product.SetSize(size);
- for (int32_t i = 0; i < size; i++) {
- product[i] = m_field->Multiply(m_coefficients[i], scalar);
- }
- CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly();
- temp->Init(m_field, &product, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- return temp;
-}
-CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::MultiplyByMonomial(
- int32_t degree,
- int32_t coefficient,
- int32_t& 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;
- }
- int32_t size = m_coefficients.GetSize();
- CFX_Int32Array product;
- product.SetSize(size + degree);
- for (int32_t i = 0; i < size; i++) {
- product[i] = (m_field->Multiply(m_coefficients[i], coefficient));
- }
- CBC_ReedSolomonGF256Poly* temp = 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,
- int32_t& e) {
- if (other->IsZero()) {
- e = BCExceptionDivideByZero;
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- }
- std::unique_ptr<CBC_ReedSolomonGF256Poly> quotient(
- m_field->GetZero()->Clone(e));
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- std::unique_ptr<CBC_ReedSolomonGF256Poly> remainder(Clone(e));
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- int32_t denominatorLeadingTerm = other->GetCoefficients(other->GetDegree());
- int32_t inverseDenominatorLeadingTeam =
- m_field->Inverse(denominatorLeadingTerm, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- while (remainder->GetDegree() >= other->GetDegree() && !remainder->IsZero()) {
- int32_t degreeDifference = remainder->GetDegree() - other->GetDegree();
- int32_t scale =
- m_field->Multiply(remainder->GetCoefficients((remainder->GetDegree())),
- inverseDenominatorLeadingTeam);
- std::unique_ptr<CBC_ReedSolomonGF256Poly> term(
- other->MultiplyByMonomial(degreeDifference, scale, e));
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- std::unique_ptr<CBC_ReedSolomonGF256Poly> iteratorQuotient(
- m_field->BuildMonomial(degreeDifference, scale, e));
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- quotient.reset(quotient->AddOrSubtract(iteratorQuotient.get(), e));
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- remainder.reset(remainder->AddOrSubtract(term.get(), e));
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- }
- CFX_PtrArray* tempPtrA = new CFX_PtrArray;
- tempPtrA->Add(quotient.release());
- tempPtrA->Add(remainder.release());
- return tempPtrA;
-}
-CBC_ReedSolomonGF256Poly::~CBC_ReedSolomonGF256Poly() {
- m_coefficients.RemoveAll();
-}
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