summaryrefslogtreecommitdiff
path: root/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp')
-rw-r--r--xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp105
1 files changed, 0 insertions, 105 deletions
diff --git a/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp
deleted file mode 100644
index 82a729b067..0000000000
--- a/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp
+++ /dev/null
@@ -1,105 +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_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.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];
-}