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-rw-r--r--fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp105
-rw-r--r--fxbarcode/common/reedsolomon/BC_ReedSolomon.h32
-rw-r--r--fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp135
-rw-r--r--fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h47
-rw-r--r--fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp253
-rw-r--r--fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h49
6 files changed, 621 insertions, 0 deletions
diff --git a/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp b/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp
new file mode 100644
index 0000000000..bb33bbd0e9
--- /dev/null
+++ b/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp
@@ -0,0 +1,105 @@
+// 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 "fxbarcode/common/reedsolomon/BC_ReedSolomon.h"
+
+#include <memory>
+
+#include "fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h"
+#include "fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h"
+
+CBC_ReedSolomonEncoder::CBC_ReedSolomonEncoder(CBC_ReedSolomonGF256* field) {
+ m_field = field;
+}
+
+void CBC_ReedSolomonEncoder::Init() {
+ m_cachedGenerators.push_back(new CBC_ReedSolomonGF256Poly(m_field, 1));
+}
+
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonEncoder::BuildGenerator(size_t degree,
+ int32_t& e) {
+ if (degree >= m_cachedGenerators.size()) {
+ CBC_ReedSolomonGF256Poly* lastGenerator = m_cachedGenerators.back();
+ for (size_t d = m_cachedGenerators.size(); d <= degree; ++d) {
+ std::vector<int32_t> temp = {1, m_field->Exp(d - 1)};
+ CBC_ReedSolomonGF256Poly temp_poly;
+ temp_poly.Init(m_field, &temp, e);
+ if (e != BCExceptionNO)
+ return nullptr;
+ CBC_ReedSolomonGF256Poly* nextGenerator =
+ lastGenerator->Multiply(&temp_poly, e);
+ if (e != BCExceptionNO)
+ return nullptr;
+ m_cachedGenerators.push_back(nextGenerator);
+ lastGenerator = nextGenerator;
+ }
+ }
+ return m_cachedGenerators[degree];
+}
+
+void CBC_ReedSolomonEncoder::Encode(std::vector<int32_t>* toEncode,
+ size_t ecBytes,
+ int32_t& e) {
+ if (ecBytes == 0) {
+ e = BCExceptionNoCorrectionBytes;
+ return;
+ }
+ if (toEncode->size() <= ecBytes) {
+ e = BCExceptionNoDataBytesProvided;
+ return;
+ }
+ CBC_ReedSolomonGF256Poly* generator = BuildGenerator(ecBytes, e);
+ if (e != BCExceptionNO)
+ return;
+ size_t dataBytes = toEncode->size() - ecBytes;
+ std::vector<int32_t> infoCoefficients(dataBytes);
+ for (size_t x = 0; x < dataBytes; x++) {
+ infoCoefficients[x] = (*toEncode)[x];
+ }
+ CBC_ReedSolomonGF256Poly info;
+ info.Init(m_field, &infoCoefficients, e);
+ if (e != BCExceptionNO)
+ return;
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> infoTemp(
+ info.MultiplyByMonomial(ecBytes, 1, e));
+ if (e != BCExceptionNO)
+ return;
+ std::unique_ptr<std::vector<CBC_ReedSolomonGF256Poly*>> temp(
+ infoTemp->Divide(generator, e));
+ if (e != BCExceptionNO)
+ return;
+ CBC_ReedSolomonGF256Poly* remainder = (*temp)[1];
+ std::vector<int32_t>* coefficients = remainder->GetCoefficients();
+ size_t numZeroCoefficients =
+ ecBytes > coefficients->size() ? ecBytes - coefficients->size() : 0;
+ for (size_t i = 0; i < numZeroCoefficients; i++)
+ (*toEncode)[dataBytes + i] = 0;
+ for (size_t y = 0; y < coefficients->size(); y++)
+ (*toEncode)[dataBytes + numZeroCoefficients + y] = (*coefficients)[y];
+ for (size_t k = 0; k < temp->size(); k++)
+ delete (*temp)[k];
+}
+
+CBC_ReedSolomonEncoder::~CBC_ReedSolomonEncoder() {
+ for (size_t i = 0; i < m_cachedGenerators.size(); i++)
+ delete m_cachedGenerators[i];
+}
diff --git a/fxbarcode/common/reedsolomon/BC_ReedSolomon.h b/fxbarcode/common/reedsolomon/BC_ReedSolomon.h
new file mode 100644
index 0000000000..42a1e002ca
--- /dev/null
+++ b/fxbarcode/common/reedsolomon/BC_ReedSolomon.h
@@ -0,0 +1,32 @@
+// 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
+
+#ifndef FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMON_H_
+#define FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMON_H_
+
+#include <vector>
+
+#include "core/fxcrt/fx_basic.h"
+
+class CBC_ReedSolomonGF256;
+class CBC_ReedSolomonGF256Poly;
+
+class CBC_ReedSolomonEncoder {
+ public:
+ explicit CBC_ReedSolomonEncoder(CBC_ReedSolomonGF256* field);
+ virtual ~CBC_ReedSolomonEncoder();
+
+ void Encode(std::vector<int32_t>* toEncode, size_t ecBytes, int32_t& e);
+ virtual void Init();
+
+ private:
+ CBC_ReedSolomonGF256Poly* BuildGenerator(size_t degree, int32_t& e);
+
+ CBC_ReedSolomonGF256* m_field;
+ std::vector<CBC_ReedSolomonGF256Poly*> m_cachedGenerators;
+};
+
+#endif // FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMON_H_
diff --git a/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp b/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp
new file mode 100644
index 0000000000..b2af2a54b4
--- /dev/null
+++ b/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp
@@ -0,0 +1,135 @@
+// 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 "fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h"
+
+#include <vector>
+
+#include "fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h"
+#include "third_party/base/ptr_util.h"
+
+CBC_ReedSolomonGF256* CBC_ReedSolomonGF256::QRCodeField = nullptr;
+CBC_ReedSolomonGF256* CBC_ReedSolomonGF256::DataMatrixField = nullptr;
+
+void CBC_ReedSolomonGF256::Initialize() {
+ QRCodeField = new CBC_ReedSolomonGF256(0x011D);
+ QRCodeField->Init();
+ DataMatrixField = new CBC_ReedSolomonGF256(0x012D);
+ DataMatrixField->Init();
+}
+
+void CBC_ReedSolomonGF256::Finalize() {
+ delete QRCodeField;
+ QRCodeField = nullptr;
+ delete DataMatrixField;
+ DataMatrixField = nullptr;
+}
+
+CBC_ReedSolomonGF256::CBC_ReedSolomonGF256(int32_t primitive) {
+ int32_t x = 1;
+ for (int32_t j = 0; j < 256; j++) {
+ m_expTable[j] = x;
+ x <<= 1;
+ if (x >= 0x100) {
+ x ^= primitive;
+ }
+ }
+ for (int32_t i = 0; i < 255; i++) {
+ m_logTable[m_expTable[i]] = i;
+ }
+ m_logTable[0] = 0;
+}
+
+void CBC_ReedSolomonGF256::Init() {
+ m_zero = pdfium::MakeUnique<CBC_ReedSolomonGF256Poly>(this, 0);
+ m_one = pdfium::MakeUnique<CBC_ReedSolomonGF256Poly>(this, 1);
+}
+
+CBC_ReedSolomonGF256::~CBC_ReedSolomonGF256() {}
+
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256::GetZero() const {
+ return m_zero.get();
+}
+
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256::GetOne() const {
+ return m_one.get();
+}
+
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256::BuildMonomial(
+ int32_t degree,
+ int32_t coefficient,
+ int32_t& e) {
+ if (degree < 0) {
+ e = BCExceptionDegreeIsNegative;
+ return nullptr;
+ }
+ if (coefficient == 0) {
+ CBC_ReedSolomonGF256Poly* temp = m_zero->Clone(e);
+ if (e != BCExceptionNO)
+ return nullptr;
+ return temp;
+ }
+ std::vector<int32_t> coefficients(degree + 1);
+ coefficients[0] = coefficient;
+ CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly();
+ temp->Init(this, &coefficients, e);
+ if (e != BCExceptionNO)
+ return nullptr;
+ return temp;
+}
+
+int32_t CBC_ReedSolomonGF256::AddOrSubtract(int32_t a, int32_t b) {
+ return a ^ b;
+}
+
+int32_t CBC_ReedSolomonGF256::Exp(int32_t a) {
+ return m_expTable[a];
+}
+
+int32_t CBC_ReedSolomonGF256::Log(int32_t a, int32_t& e) {
+ if (a == 0) {
+ e = BCExceptionAIsZero;
+ return 0;
+ }
+ return m_logTable[a];
+}
+
+int32_t CBC_ReedSolomonGF256::Inverse(int32_t a, int32_t& e) {
+ if (a == 0) {
+ e = BCExceptionAIsZero;
+ return 0;
+ }
+ return m_expTable[255 - m_logTable[a]];
+}
+
+int32_t CBC_ReedSolomonGF256::Multiply(int32_t a, int32_t b) {
+ if (a == 0 || b == 0) {
+ return 0;
+ }
+ if (a == 1) {
+ return b;
+ }
+ if (b == 1) {
+ return a;
+ }
+ return m_expTable[(m_logTable[a] + m_logTable[b]) % 255];
+}
diff --git a/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h b/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h
new file mode 100644
index 0000000000..d4b303c5ff
--- /dev/null
+++ b/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h
@@ -0,0 +1,47 @@
+// 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
+
+#ifndef FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256_H_
+#define FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256_H_
+
+#include <memory>
+
+#include "core/fxcrt/fx_basic.h"
+#include "fxbarcode/utils.h"
+
+class CBC_ReedSolomonGF256Poly;
+
+class CBC_ReedSolomonGF256 {
+ public:
+ explicit CBC_ReedSolomonGF256(int32_t primitive);
+ virtual ~CBC_ReedSolomonGF256();
+
+ static void Initialize();
+ static void Finalize();
+
+ CBC_ReedSolomonGF256Poly* GetZero() const;
+ CBC_ReedSolomonGF256Poly* GetOne() const;
+ CBC_ReedSolomonGF256Poly* BuildMonomial(int32_t degree,
+ int32_t coefficient,
+ int32_t& e);
+ static int32_t AddOrSubtract(int32_t a, int32_t b);
+ int32_t Exp(int32_t a);
+ int32_t Log(int32_t a, int32_t& e);
+ int32_t Inverse(int32_t a, int32_t& e);
+ int32_t Multiply(int32_t a, int32_t b);
+ virtual void Init();
+
+ static CBC_ReedSolomonGF256* QRCodeField;
+ static CBC_ReedSolomonGF256* DataMatrixField;
+
+ private:
+ int32_t m_expTable[256];
+ int32_t m_logTable[256];
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> m_zero;
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> m_one;
+};
+
+#endif // FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256_H_
diff --git a/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp b/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp
new file mode 100644
index 0000000000..a062589218
--- /dev/null
+++ b/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp
@@ -0,0 +1,253 @@
+// 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 "fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h"
+
+#include <memory>
+#include <utility>
+
+#include "fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h"
+#include "third_party/base/stl_util.h"
+
+CBC_ReedSolomonGF256Poly::CBC_ReedSolomonGF256Poly(CBC_ReedSolomonGF256* field,
+ int32_t coefficients) {
+ if (!field)
+ return;
+
+ m_field = field;
+ m_coefficients.push_back(coefficients);
+}
+
+CBC_ReedSolomonGF256Poly::CBC_ReedSolomonGF256Poly() {
+ m_field = nullptr;
+}
+
+void CBC_ReedSolomonGF256Poly::Init(CBC_ReedSolomonGF256* field,
+ std::vector<int32_t>* coefficients,
+ int32_t& e) {
+ if (!coefficients || coefficients->empty()) {
+ e = BCExceptionCoefficientsSizeIsNull;
+ return;
+ }
+ m_field = field;
+ size_t coefficientsLength = coefficients->size();
+ if (coefficientsLength > 1 && coefficients->front() == 0) {
+ size_t firstNonZero = 1;
+ while (firstNonZero < coefficientsLength &&
+ (*coefficients)[firstNonZero] == 0) {
+ firstNonZero++;
+ }
+ if (firstNonZero == coefficientsLength) {
+ m_coefficients = *(m_field->GetZero()->GetCoefficients());
+ } else {
+ m_coefficients.resize(coefficientsLength - firstNonZero);
+ for (size_t i = firstNonZero, j = 0; i < coefficientsLength; i++, j++)
+ m_coefficients[j] = (*coefficients)[i];
+ }
+ } else {
+ m_coefficients = *coefficients;
+ }
+}
+
+std::vector<int32_t>* CBC_ReedSolomonGF256Poly::GetCoefficients() {
+ return &m_coefficients;
+}
+
+int32_t CBC_ReedSolomonGF256Poly::GetDegree() {
+ return pdfium::CollectionSize<int32_t>(m_coefficients) - 1;
+}
+
+bool CBC_ReedSolomonGF256Poly::IsZero() {
+ return m_coefficients.front() == 0;
+}
+
+int32_t CBC_ReedSolomonGF256Poly::GetCoefficients(int32_t degree) {
+ return m_coefficients[m_coefficients.size() - 1 - degree];
+}
+
+int32_t CBC_ReedSolomonGF256Poly::EvaluateAt(int32_t a) {
+ if (a == 0) {
+ return GetCoefficients(0);
+ }
+ size_t size = m_coefficients.size();
+ if (a == 1) {
+ int32_t result = 0;
+ for (size_t i = 0; i < size; i++)
+ result = CBC_ReedSolomonGF256::AddOrSubtract(result, m_coefficients[i]);
+ return result;
+ }
+ int32_t result = m_coefficients[0];
+ for (size_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);
+ if (e != BCExceptionNO)
+ return nullptr;
+ return temp;
+}
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::AddOrSubtract(
+ CBC_ReedSolomonGF256Poly* other,
+ int32_t& e) {
+ if (IsZero())
+ return other->Clone(e);
+ if (other->IsZero())
+ return Clone(e);
+
+ std::vector<int32_t> smallerCoefficients = m_coefficients;
+ std::vector<int32_t> largerCoefficients = *(other->GetCoefficients());
+ if (smallerCoefficients.size() > largerCoefficients.size()) {
+ std::swap(smallerCoefficients, largerCoefficients);
+ }
+ std::vector<int32_t> sumDiff(largerCoefficients.size());
+ size_t lengthDiff = largerCoefficients.size() - smallerCoefficients.size();
+ for (size_t i = 0; i < lengthDiff; i++) {
+ sumDiff[i] = largerCoefficients[i];
+ }
+ for (size_t j = lengthDiff; j < largerCoefficients.size(); j++) {
+ sumDiff[j] = CBC_ReedSolomonGF256::AddOrSubtract(
+ smallerCoefficients[j - lengthDiff], largerCoefficients[j]);
+ }
+ CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly();
+ temp->Init(m_field, &sumDiff, e);
+ if (e != BCExceptionNO)
+ return nullptr;
+ return temp;
+}
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::Multiply(
+ CBC_ReedSolomonGF256Poly* other,
+ int32_t& e) {
+ if (IsZero() || other->IsZero())
+ return m_field->GetZero()->Clone(e);
+
+ std::vector<int32_t> aCoefficients = m_coefficients;
+ std::vector<int32_t> bCoefficients = *(other->GetCoefficients());
+ size_t aLength = aCoefficients.size();
+ size_t bLength = bCoefficients.size();
+ std::vector<int32_t> product(aLength + bLength - 1);
+ for (size_t i = 0; i < aLength; i++) {
+ int32_t aCoeff = m_coefficients[i];
+ for (size_t j = 0; j < bLength; j++) {
+ product[i + j] = CBC_ReedSolomonGF256::AddOrSubtract(
+ product[i + j],
+ m_field->Multiply(aCoeff, (*other->GetCoefficients())[j]));
+ }
+ }
+ CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly();
+ temp->Init(m_field, &product, e);
+ if (e != BCExceptionNO)
+ return nullptr;
+ return temp;
+}
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::Multiply(int32_t scalar,
+ int32_t& e) {
+ if (scalar == 0)
+ return m_field->GetZero()->Clone(e);
+ if (scalar == 1)
+ return Clone(e);
+
+ size_t size = m_coefficients.size();
+ std::vector<int32_t> product(size);
+ for (size_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);
+ if (e != BCExceptionNO)
+ return nullptr;
+ return temp;
+}
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::MultiplyByMonomial(
+ int32_t degree,
+ int32_t coefficient,
+ int32_t& e) {
+ if (degree < 0) {
+ e = BCExceptionDegreeIsNegative;
+ return nullptr;
+ }
+ if (coefficient == 0)
+ return m_field->GetZero()->Clone(e);
+
+ size_t size = m_coefficients.size();
+ std::vector<int32_t> product(size + degree);
+ for (size_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);
+ if (e != BCExceptionNO)
+ return nullptr;
+ return temp;
+}
+
+std::vector<CBC_ReedSolomonGF256Poly*>* CBC_ReedSolomonGF256Poly::Divide(
+ CBC_ReedSolomonGF256Poly* other,
+ int32_t& e) {
+ if (other->IsZero()) {
+ e = BCExceptionDivideByZero;
+ return nullptr;
+ }
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> quotient(
+ m_field->GetZero()->Clone(e));
+ if (e != BCExceptionNO)
+ return nullptr;
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> remainder(Clone(e));
+ if (e != BCExceptionNO)
+ return nullptr;
+ int32_t denominatorLeadingTerm = other->GetCoefficients(other->GetDegree());
+ int32_t inverseDenominatorLeadingTeam =
+ m_field->Inverse(denominatorLeadingTerm, e);
+ if (e != BCExceptionNO)
+ return nullptr;
+ 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));
+ if (e != BCExceptionNO)
+ return nullptr;
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> iteratorQuotient(
+ m_field->BuildMonomial(degreeDifference, scale, e));
+ if (e != BCExceptionNO)
+ return nullptr;
+ quotient.reset(quotient->AddOrSubtract(iteratorQuotient.get(), e));
+ if (e != BCExceptionNO)
+ return nullptr;
+ remainder.reset(remainder->AddOrSubtract(term.get(), e));
+ if (e != BCExceptionNO)
+ return nullptr;
+ }
+ std::vector<CBC_ReedSolomonGF256Poly*>* tempPtrA =
+ new std::vector<CBC_ReedSolomonGF256Poly*>();
+ tempPtrA->push_back(quotient.release());
+ tempPtrA->push_back(remainder.release());
+ return tempPtrA;
+}
+
+CBC_ReedSolomonGF256Poly::~CBC_ReedSolomonGF256Poly() {}
diff --git a/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h b/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h
new file mode 100644
index 0000000000..284b531e81
--- /dev/null
+++ b/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h
@@ -0,0 +1,49 @@
+// 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
+
+#ifndef FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_
+#define FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_
+
+#include <vector>
+
+#include "core/fxcrt/fx_basic.h"
+
+class CBC_ReedSolomonGF256;
+
+class CBC_ReedSolomonGF256Poly final {
+ public:
+ CBC_ReedSolomonGF256Poly(CBC_ReedSolomonGF256* field, int32_t coefficients);
+ CBC_ReedSolomonGF256Poly();
+ ~CBC_ReedSolomonGF256Poly();
+ void Init(CBC_ReedSolomonGF256* field,
+ std::vector<int32_t>* coefficients,
+ int32_t& e);
+
+ int32_t GetCoefficients(int32_t degree);
+ std::vector<int32_t>* GetCoefficients();
+ int32_t GetDegree();
+ bool IsZero();
+ int32_t EvaluateAt(int32_t a);
+ CBC_ReedSolomonGF256Poly* AddOrSubtract(CBC_ReedSolomonGF256Poly* other,
+ int32_t& e);
+ CBC_ReedSolomonGF256Poly* Multiply(CBC_ReedSolomonGF256Poly* other,
+ int32_t& e);
+ CBC_ReedSolomonGF256Poly* Multiply(int32_t scalar, int32_t& e);
+ CBC_ReedSolomonGF256Poly* MultiplyByMonomial(int32_t degree,
+ int32_t coefficient,
+ int32_t& e);
+ std::vector<CBC_ReedSolomonGF256Poly*>* Divide(
+ CBC_ReedSolomonGF256Poly* other,
+ int32_t& e);
+
+ CBC_ReedSolomonGF256Poly* Clone(int32_t& e);
+
+ private:
+ CBC_ReedSolomonGF256* m_field;
+ std::vector<int32_t> m_coefficients;
+};
+
+#endif // FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 18:36:18 +0000