Move xfa/src up to xfa/.

This CL moves the xfa/src files up to the xfa/ directory and fixes the includes,
include guards, and build files.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1803723002 .

8 files changed, 851 insertions, 0 deletions

diff --git a/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp
new file mode 100644
index 0000000000..4d986cca26
--- /dev/null
+++ b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp
@@ -0,0 +1,104 @@
+// 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/fxbarcode/common/reedsolomon/BC_ReedSolomon.h"
+
+#include <memory>
+
+#include "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h"
+#include "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h"
+
+CBC_ReedSolomonEncoder::CBC_ReedSolomonEncoder(CBC_ReedSolomonGF256* field) {
+  m_field = field;
+}
+void CBC_ReedSolomonEncoder::Init() {
+  m_cachedGenerators.Add(new CBC_ReedSolomonGF256Poly(m_field, 1));
+}
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonEncoder::BuildGenerator(int32_t degree,
+                                                                 int32_t& e) {
+  if (degree >= m_cachedGenerators.GetSize()) {
+    CBC_ReedSolomonGF256Poly* lastGenerator =
+        (CBC_ReedSolomonGF256Poly*)(m_cachedGenerators
+                                        [m_cachedGenerators.GetSize() - 1]);
+    for (int32_t d = m_cachedGenerators.GetSize(); d <= degree; d++) {
+      CFX_Int32Array temp;
+      temp.Add(1);
+      temp.Add(m_field->Exp(d - 1));
+      CBC_ReedSolomonGF256Poly temp_poly;
+      temp_poly.Init(m_field, &temp, e);
+      BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+      CBC_ReedSolomonGF256Poly* nextGenerator =
+          lastGenerator->Multiply(&temp_poly, e);
+      BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+      m_cachedGenerators.Add(nextGenerator);
+      lastGenerator = nextGenerator;
+    }
+  }
+  return (CBC_ReedSolomonGF256Poly*)(m_cachedGenerators[degree]);
+}
+void CBC_ReedSolomonEncoder::Encode(CFX_Int32Array* toEncode,
+                                    int32_t ecBytes,
+                                    int32_t& e) {
+  if (ecBytes == 0) {
+    e = BCExceptionNoCorrectionBytes;
+    BC_EXCEPTION_CHECK_ReturnVoid(e);
+  }
+  int32_t dataBytes = toEncode->GetSize() - ecBytes;
+  if (dataBytes <= 0) {
+    e = BCExceptionNoDataBytesProvided;
+    BC_EXCEPTION_CHECK_ReturnVoid(e);
+  }
+  CBC_ReedSolomonGF256Poly* generator = BuildGenerator(ecBytes, e);
+  BC_EXCEPTION_CHECK_ReturnVoid(e);
+  CFX_Int32Array infoCoefficients;
+  infoCoefficients.SetSize(dataBytes);
+  for (int32_t x = 0; x < dataBytes; x++) {
+    infoCoefficients[x] = toEncode->operator[](x);
+  }
+  CBC_ReedSolomonGF256Poly info;
+  info.Init(m_field, &infoCoefficients, e);
+  BC_EXCEPTION_CHECK_ReturnVoid(e);
+  std::unique_ptr<CBC_ReedSolomonGF256Poly> infoTemp(
+      info.MultiplyByMonomial(ecBytes, 1, e));
+  BC_EXCEPTION_CHECK_ReturnVoid(e);
+  std::unique_ptr<CFX_PtrArray> temp(infoTemp->Divide(generator, e));
+  BC_EXCEPTION_CHECK_ReturnVoid(e);
+  CBC_ReedSolomonGF256Poly* remainder =
+      (CBC_ReedSolomonGF256Poly*)(temp->operator[](1));
+  CFX_Int32Array* coefficients = remainder->GetCoefficients();
+  int32_t numZeroCoefficients = ecBytes - coefficients->GetSize();
+  for (int32_t i = 0; i < numZeroCoefficients; i++) {
+    (*toEncode)[dataBytes + i] = 0;
+  }
+  for (int32_t y = 0; y < coefficients->GetSize(); y++) {
+    (*toEncode)[dataBytes + numZeroCoefficients + y] =
+        coefficients->operator[](y);
+  }
+  for (int32_t k = 0; k < temp->GetSize(); k++) {
+    delete (CBC_ReedSolomonGF256Poly*)(*temp)[k];
+  }
+}
+CBC_ReedSolomonEncoder::~CBC_ReedSolomonEncoder() {
+  for (int32_t i = 0; i < m_cachedGenerators.GetSize(); i++) {
+    delete (CBC_ReedSolomonGF256Poly*)m_cachedGenerators[i];
+  }
+}
diff --git a/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.h b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.h
new file mode 100644
index 0000000000..6f6aef7e7d
--- /dev/null
+++ b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.h
@@ -0,0 +1,29 @@
+// 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 XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMON_H_
+#define XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMON_H_
+
+#include "core/include/fxcrt/fx_basic.h"
+
+class CBC_ReedSolomonGF256;
+class CBC_ReedSolomonGF256Poly;
+
+class CBC_ReedSolomonEncoder {
+ private:
+  CBC_ReedSolomonGF256* m_field;
+  CFX_PtrArray m_cachedGenerators;
+  CBC_ReedSolomonGF256Poly* BuildGenerator(int32_t degree, int32_t& e);
+
+ public:
+  CBC_ReedSolomonEncoder(CBC_ReedSolomonGF256* field);
+  virtual ~CBC_ReedSolomonEncoder();
+
+  void Encode(CFX_Int32Array* toEncode, int32_t ecBytes, int32_t& e);
+  virtual void Init();
+};
+
+#endif  // XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMON_H_
diff --git a/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.cpp b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.cpp
new file mode 100644
index 0000000000..ff91c9ddc3
--- /dev/null
+++ b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.cpp
@@ -0,0 +1,221 @@
+// 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/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.h"
+
+#include <memory>
+#include <utility>
+
+#include "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h"
+#include "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h"
+
+CBC_ReedSolomonDecoder::CBC_ReedSolomonDecoder(CBC_ReedSolomonGF256* field) {
+  m_field = field;
+}
+CBC_ReedSolomonDecoder::~CBC_ReedSolomonDecoder() {}
+void CBC_ReedSolomonDecoder::Decode(CFX_Int32Array* received,
+                                    int32_t twoS,
+                                    int32_t& e) {
+  CBC_ReedSolomonGF256Poly poly;
+  poly.Init(m_field, received, e);
+  BC_EXCEPTION_CHECK_ReturnVoid(e);
+  CFX_Int32Array syndromeCoefficients;
+  syndromeCoefficients.SetSize(twoS);
+  FX_BOOL dataMatrix = FALSE;
+  FX_BOOL noError = TRUE;
+  for (int32_t i = 0; i < twoS; i++) {
+    int32_t eval = poly.EvaluateAt(m_field->Exp(dataMatrix ? i + 1 : i));
+    syndromeCoefficients[twoS - 1 - i] = eval;
+    if (eval != 0) {
+      noError = FALSE;
+    }
+  }
+  if (noError) {
+    return;
+  }
+  CBC_ReedSolomonGF256Poly syndrome;
+  syndrome.Init(m_field, &syndromeCoefficients, e);
+  BC_EXCEPTION_CHECK_ReturnVoid(e);
+  std::unique_ptr<CBC_ReedSolomonGF256Poly> temp(
+      m_field->BuildMonomial(twoS, 1, e));
+  BC_EXCEPTION_CHECK_ReturnVoid(e);
+  std::unique_ptr<CFX_PtrArray> sigmaOmega(
+      RunEuclideanAlgorithm(temp.get(), &syndrome, twoS, e));
+  BC_EXCEPTION_CHECK_ReturnVoid(e);
+  std::unique_ptr<CBC_ReedSolomonGF256Poly> sigma(
+      (CBC_ReedSolomonGF256Poly*)(*sigmaOmega)[0]);
+  std::unique_ptr<CBC_ReedSolomonGF256Poly> omega(
+      (CBC_ReedSolomonGF256Poly*)(*sigmaOmega)[1]);
+  std::unique_ptr<CFX_Int32Array> errorLocations(
+      FindErrorLocations(sigma.get(), e));
+  BC_EXCEPTION_CHECK_ReturnVoid(e);
+  std::unique_ptr<CFX_Int32Array> errorMagnitudes(
+      FindErrorMagnitudes(omega.get(), errorLocations.get(), dataMatrix, e));
+  BC_EXCEPTION_CHECK_ReturnVoid(e);
+  for (int32_t k = 0; k < errorLocations->GetSize(); k++) {
+    int32_t position =
+        received->GetSize() - 1 - m_field->Log((*errorLocations)[k], e);
+    BC_EXCEPTION_CHECK_ReturnVoid(e);
+    if (position < 0) {
+      e = BCExceptionBadErrorLocation;
+      BC_EXCEPTION_CHECK_ReturnVoid(e);
+    }
+    (*received)[position] = CBC_ReedSolomonGF256::AddOrSubtract(
+        (*received)[position], (*errorMagnitudes)[k]);
+  }
+}
+CFX_PtrArray* CBC_ReedSolomonDecoder::RunEuclideanAlgorithm(
+    CBC_ReedSolomonGF256Poly* a,
+    CBC_ReedSolomonGF256Poly* b,
+    int32_t R,
+    int32_t& e) {
+  if (a->GetDegree() < b->GetDegree()) {
+    CBC_ReedSolomonGF256Poly* temp = a;
+    a = b;
+    b = temp;
+  }
+  std::unique_ptr<CBC_ReedSolomonGF256Poly> rLast(a->Clone(e));
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  std::unique_ptr<CBC_ReedSolomonGF256Poly> r(b->Clone(e));
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  std::unique_ptr<CBC_ReedSolomonGF256Poly> sLast(m_field->GetOne()->Clone(e));
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  std::unique_ptr<CBC_ReedSolomonGF256Poly> s(m_field->GetZero()->Clone(e));
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  std::unique_ptr<CBC_ReedSolomonGF256Poly> tLast(m_field->GetZero()->Clone(e));
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  std::unique_ptr<CBC_ReedSolomonGF256Poly> t(m_field->GetOne()->Clone(e));
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  while (r->GetDegree() >= R / 2) {
+    std::unique_ptr<CBC_ReedSolomonGF256Poly> rLastLast = std::move(rLast);
+    std::unique_ptr<CBC_ReedSolomonGF256Poly> sLastLast = std::move(sLast);
+    std::unique_ptr<CBC_ReedSolomonGF256Poly> tLastlast = std::move(tLast);
+    rLast = std::move(r);
+    sLast = std::move(s);
+    tLast = std::move(t);
+    if (rLast->IsZero()) {
+      e = BCExceptionR_I_1IsZero;
+      BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    }
+    r.reset(rLastLast->Clone(e));
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    std::unique_ptr<CBC_ReedSolomonGF256Poly> q(m_field->GetZero()->Clone(e));
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    int32_t denominatorLeadingTerm = rLast->GetCoefficients(rLast->GetDegree());
+    int32_t dltInverse = m_field->Inverse(denominatorLeadingTerm, e);
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    while (r->GetDegree() >= rLast->GetDegree() && !(r->IsZero())) {
+      int32_t degreeDiff = r->GetDegree() - rLast->GetDegree();
+      int32_t scale =
+          m_field->Multiply(r->GetCoefficients(r->GetDegree()), dltInverse);
+      std::unique_ptr<CBC_ReedSolomonGF256Poly> build(
+          m_field->BuildMonomial(degreeDiff, scale, e));
+      BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+      q.reset(q->AddOrSubtract(build.get(), e));
+      BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+      std::unique_ptr<CBC_ReedSolomonGF256Poly> multiply(
+          rLast->MultiplyByMonomial(degreeDiff, scale, e));
+      BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+      r.reset(r->AddOrSubtract(multiply.get(), e));
+      BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    }
+    std::unique_ptr<CBC_ReedSolomonGF256Poly> temp1(
+        q->Multiply(sLast.get(), e));
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    s.reset(temp1->AddOrSubtract(sLastLast.get(), e));
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    std::unique_ptr<CBC_ReedSolomonGF256Poly> temp5(
+        q->Multiply(tLast.get(), e));
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    t.reset(temp5->AddOrSubtract(tLastlast.get(), e));
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  }
+  int32_t sigmaTildeAtZero = t->GetCoefficients(0);
+  if (sigmaTildeAtZero == 0) {
+    e = BCExceptionIsZero;
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  }
+  int32_t inverse = m_field->Inverse(sigmaTildeAtZero, e);
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  std::unique_ptr<CBC_ReedSolomonGF256Poly> sigma(t->Multiply(inverse, e));
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  std::unique_ptr<CBC_ReedSolomonGF256Poly> omega(r->Multiply(inverse, e));
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  CFX_PtrArray* temp = new CFX_PtrArray;
+  temp->Add(sigma.release());
+  temp->Add(omega.release());
+  return temp;
+}
+CFX_Int32Array* CBC_ReedSolomonDecoder::FindErrorLocations(
+    CBC_ReedSolomonGF256Poly* errorLocator,
+    int32_t& e) {
+  int32_t numErrors = errorLocator->GetDegree();
+  if (numErrors == 1) {
+    std::unique_ptr<CFX_Int32Array> temp(new CFX_Int32Array);
+    temp->Add(errorLocator->GetCoefficients(1));
+    return temp.release();
+  }
+  CFX_Int32Array* tempT = new CFX_Int32Array;
+  tempT->SetSize(numErrors);
+  std::unique_ptr<CFX_Int32Array> result(tempT);
+  int32_t ie = 0;
+  for (int32_t i = 1; i < 256 && ie < numErrors; i++) {
+    if (errorLocator->EvaluateAt(i) == 0) {
+      (*result)[ie] = m_field->Inverse(i, ie);
+      BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+      ie++;
+    }
+  }
+  if (ie != numErrors) {
+    e = BCExceptionDegreeNotMatchRoots;
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  }
+  return result.release();
+}
+CFX_Int32Array* CBC_ReedSolomonDecoder::FindErrorMagnitudes(
+    CBC_ReedSolomonGF256Poly* errorEvaluator,
+    CFX_Int32Array* errorLocations,
+    FX_BOOL dataMatrix,
+    int32_t& e) {
+  int32_t s = errorLocations->GetSize();
+  CFX_Int32Array* temp = new CFX_Int32Array;
+  temp->SetSize(s);
+  std::unique_ptr<CFX_Int32Array> result(temp);
+  for (int32_t i = 0; i < s; i++) {
+    int32_t xiInverse = m_field->Inverse(errorLocations->operator[](i), e);
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    int32_t denominator = 1;
+    for (int32_t j = 0; j < s; j++) {
+      if (i != j) {
+        denominator = m_field->Multiply(
+            denominator, CBC_ReedSolomonGF256::AddOrSubtract(
+                             1, m_field->Multiply(errorLocations->operator[](j),
+                                                  xiInverse)));
+      }
+    }
+    int32_t temp = m_field->Inverse(denominator, temp);
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    (*result)[i] =
+        m_field->Multiply(errorEvaluator->EvaluateAt(xiInverse), temp);
+  }
+  return result.release();
+}
diff --git a/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.h b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.h
new file mode 100644
index 0000000000..ec14344fe0
--- /dev/null
+++ b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.h
@@ -0,0 +1,35 @@
+// 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 XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONDECODER_H_
+#define XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONDECODER_H_
+
+#include "core/include/fxcrt/fx_basic.h"
+
+class CBC_ReedSolomonGF256;
+class CBC_ReedSolomonGF256Poly;
+
+class CBC_ReedSolomonDecoder {
+ private:
+  CBC_ReedSolomonGF256* m_field;
+
+ public:
+  CBC_ReedSolomonDecoder(CBC_ReedSolomonGF256* field);
+  virtual ~CBC_ReedSolomonDecoder();
+  void Decode(CFX_Int32Array* received, int32_t twoS, int32_t& e);
+  CFX_PtrArray* RunEuclideanAlgorithm(CBC_ReedSolomonGF256Poly* a,
+                                      CBC_ReedSolomonGF256Poly* b,
+                                      int32_t R,
+                                      int32_t& e);
+  CFX_Int32Array* FindErrorLocations(CBC_ReedSolomonGF256Poly* errorLocator,
+                                     int32_t& e);
+  CFX_Int32Array* FindErrorMagnitudes(CBC_ReedSolomonGF256Poly* errorEvaluator,
+                                      CFX_Int32Array* errorLocations,
+                                      FX_BOOL dataMatrix,
+                                      int32_t& e);
+};
+
+#endif  // XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONDECODER_H_
diff --git a/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp
new file mode 100644
index 0000000000..5e9fd33ac4
--- /dev/null
+++ b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp
@@ -0,0 +1,124 @@
+// 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/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h"
+#include "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h"
+
+CBC_ReedSolomonGF256* CBC_ReedSolomonGF256::QRCodeFild = NULL;
+CBC_ReedSolomonGF256* CBC_ReedSolomonGF256::DataMatrixField = NULL;
+void CBC_ReedSolomonGF256::Initialize() {
+  QRCodeFild = new CBC_ReedSolomonGF256(0x011D);
+  QRCodeFild->Init();
+  DataMatrixField = new CBC_ReedSolomonGF256(0x012D);
+  DataMatrixField->Init();
+}
+void CBC_ReedSolomonGF256::Finalize() {
+  if (QRCodeFild) {
+    delete QRCodeFild;
+  }
+  QRCodeFild = NULL;
+  if (DataMatrixField) {
+    delete DataMatrixField;
+  }
+  DataMatrixField = NULL;
+}
+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 = new CBC_ReedSolomonGF256Poly(this, 0);
+  m_one = new CBC_ReedSolomonGF256Poly(this, 1);
+}
+CBC_ReedSolomonGF256::~CBC_ReedSolomonGF256() {
+  delete m_zero;
+  delete m_one;
+}
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256::GetZero() {
+  return m_zero;
+}
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256::GetOne() {
+  return m_one;
+}
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256::BuildMonomial(
+    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_zero->Clone(e);
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    return temp;
+  }
+  CFX_Int32Array coefficients;
+  coefficients.SetSize(degree + 1);
+  coefficients[0] = coefficient;
+  CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly();
+  temp->Init(this, &coefficients, e);
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  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;
+    BC_EXCEPTION_CHECK_ReturnValue(e, 0);
+  }
+  return m_logTable[a];
+}
+int32_t CBC_ReedSolomonGF256::Inverse(int32_t a, int32_t& e) {
+  if (a == 0) {
+    e = BCExceptionAIsZero;
+    BC_EXCEPTION_CHECK_ReturnValue(e, 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/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h
new file mode 100644
index 0000000000..099cab57d5
--- /dev/null
+++ b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h
@@ -0,0 +1,41 @@
+// 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 XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256_H_
+#define XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256_H_
+
+#include "core/include/fxcrt/fx_basic.h"
+#include "xfa/fxbarcode/utils.h"
+
+class CBC_ReedSolomonGF256Poly;
+class CBC_ReedSolomonGF256 {
+ public:
+  static void Initialize();
+  static void Finalize();
+  static CBC_ReedSolomonGF256* QRCodeFild;
+  static CBC_ReedSolomonGF256* DataMatrixField;
+  CBC_ReedSolomonGF256(int32_t primitive);
+  virtual ~CBC_ReedSolomonGF256();
+  CBC_ReedSolomonGF256Poly* GetZero();
+  CBC_ReedSolomonGF256Poly* GetOne();
+  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();
+
+ private:
+  int32_t m_expTable[256];
+  int32_t m_logTable[256];
+  CBC_ReedSolomonGF256Poly* m_zero;
+  CBC_ReedSolomonGF256Poly* m_one;
+};
+
+#endif  // XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256_H_
diff --git a/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp
new file mode 100644
index 0000000000..ee22390df6
--- /dev/null
+++ b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp
@@ -0,0 +1,254 @@
+// 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/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h"
+
+#include <memory>
+
+#include "xfa/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();
+}
diff --git a/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h
new file mode 100644
index 0000000000..16a1f9066e
--- /dev/null
+++ b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h
@@ -0,0 +1,43 @@
+// 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 XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_
+#define XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_
+
+#include "core/include/fxcrt/fx_basic.h"
+
+class CBC_ReedSolomonGF256;
+
+class CBC_ReedSolomonGF256Poly {
+ public:
+  CBC_ReedSolomonGF256Poly(CBC_ReedSolomonGF256* field, int32_t coefficients);
+  CBC_ReedSolomonGF256Poly();
+  virtual ~CBC_ReedSolomonGF256Poly();
+  int32_t GetCoefficients(int32_t degree);
+  CFX_Int32Array* GetCoefficients();
+  int32_t GetDegree();
+  FX_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);
+  CFX_PtrArray* Divide(CBC_ReedSolomonGF256Poly* other, int32_t& e);
+  CBC_ReedSolomonGF256Poly* Clone(int32_t& e);
+  virtual void Init(CBC_ReedSolomonGF256* field,
+                    CFX_Int32Array* coefficients,
+                    int32_t& e);
+
+ private:
+  CBC_ReedSolomonGF256* m_field;
+  CFX_Int32Array m_coefficients;
+};
+
+#endif  // XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_