Remove barcode reading code.

We never read barcodes, we only write them. Remove code related to barcode
reading.

Review-Url: https://codereview.chromium.org/2071633002

2 files changed, 0 insertions, 258 deletions

diff --git a/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.cpp b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.cpp
deleted file mode 100644
index 8788afbda8..0000000000
--- a/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.cpp
+++ /dev/null
@@ -1,221 +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/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_ArrayTemplate<CBC_ReedSolomonGF256Poly*>> sigmaOmega(
-      RunEuclideanAlgorithm(temp.get(), &syndrome, twoS, e));
-  BC_EXCEPTION_CHECK_ReturnVoid(e);
-  std::unique_ptr<CBC_ReedSolomonGF256Poly> sigma((*sigmaOmega)[0]);
-  std::unique_ptr<CBC_ReedSolomonGF256Poly> omega((*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_ArrayTemplate<CBC_ReedSolomonGF256Poly*>*
-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, nullptr);
-  std::unique_ptr<CBC_ReedSolomonGF256Poly> r(b->Clone(e));
-  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  std::unique_ptr<CBC_ReedSolomonGF256Poly> sLast(m_field->GetOne()->Clone(e));
-  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  std::unique_ptr<CBC_ReedSolomonGF256Poly> s(m_field->GetZero()->Clone(e));
-  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  std::unique_ptr<CBC_ReedSolomonGF256Poly> tLast(m_field->GetZero()->Clone(e));
-  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  std::unique_ptr<CBC_ReedSolomonGF256Poly> t(m_field->GetOne()->Clone(e));
-  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  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, nullptr);
-    }
-    r.reset(rLastLast->Clone(e));
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-    std::unique_ptr<CBC_ReedSolomonGF256Poly> q(m_field->GetZero()->Clone(e));
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-    int32_t denominatorLeadingTerm = rLast->GetCoefficients(rLast->GetDegree());
-    int32_t dltInverse = m_field->Inverse(denominatorLeadingTerm, e);
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-    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, nullptr);
-      q.reset(q->AddOrSubtract(build.get(), e));
-      BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-      std::unique_ptr<CBC_ReedSolomonGF256Poly> multiply(
-          rLast->MultiplyByMonomial(degreeDiff, scale, e));
-      BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-      r.reset(r->AddOrSubtract(multiply.get(), e));
-      BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-    }
-    std::unique_ptr<CBC_ReedSolomonGF256Poly> temp1(
-        q->Multiply(sLast.get(), e));
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-    s.reset(temp1->AddOrSubtract(sLastLast.get(), e));
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-    std::unique_ptr<CBC_ReedSolomonGF256Poly> temp5(
-        q->Multiply(tLast.get(), e));
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-    t.reset(temp5->AddOrSubtract(tLastlast.get(), e));
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  }
-  int32_t sigmaTildeAtZero = t->GetCoefficients(0);
-  if (sigmaTildeAtZero == 0) {
-    e = BCExceptionIsZero;
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  }
-  int32_t inverse = m_field->Inverse(sigmaTildeAtZero, e);
-  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  std::unique_ptr<CBC_ReedSolomonGF256Poly> sigma(t->Multiply(inverse, e));
-  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  std::unique_ptr<CBC_ReedSolomonGF256Poly> omega(r->Multiply(inverse, e));
-  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  CFX_ArrayTemplate<CBC_ReedSolomonGF256Poly*>* temp =
-      new CFX_ArrayTemplate<CBC_ReedSolomonGF256Poly*>();
-  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, nullptr);
-      ie++;
-    }
-  }
-  if (ie != numErrors) {
-    e = BCExceptionDegreeNotMatchRoots;
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  }
-  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* tempArray = new CFX_Int32Array;
-  tempArray->SetSize(s);
-  std::unique_ptr<CFX_Int32Array> result(tempArray);
-  for (int32_t i = 0; i < s; i++) {
-    int32_t xiInverse = m_field->Inverse(errorLocations->operator[](i), e);
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-    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, e);
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-    (*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
deleted file mode 100644
index d42af6a27a..0000000000
--- a/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.h
+++ /dev/null
@@ -1,37 +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
-
-#ifndef XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONDECODER_H_
-#define XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONDECODER_H_
-
-#include "core/fxcrt/include/fx_basic.h"
-
-class CBC_ReedSolomonGF256;
-class CBC_ReedSolomonGF256Poly;
-
-class CBC_ReedSolomonDecoder {
- public:
-  CBC_ReedSolomonDecoder(CBC_ReedSolomonGF256* field);
-  virtual ~CBC_ReedSolomonDecoder();
-
-  void Decode(CFX_Int32Array* received, int32_t twoS, int32_t& e);
-  CFX_ArrayTemplate<CBC_ReedSolomonGF256Poly*>* 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);
-
- private:
-  CBC_ReedSolomonGF256* m_field;
-};
-
-#endif  // XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONDECODER_H_