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authorDan Sinclair <dsinclair@chromium.org>2016-03-14 14:14:16 -0400
committerDan Sinclair <dsinclair@chromium.org>2016-03-14 14:14:16 -0400
commit1770c021cf998ff1b33855b1397f6ea8ff9f7cd7 (patch)
tree285e39abd4b5872d8cd632b9e331b0667fdc3eae /xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp
parentf766ad219f66543654520f6a1955836f519e26d1 (diff)
downloadpdfium-1770c021cf998ff1b33855b1397f6ea8ff9f7cd7.tar.xz
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 .
Diffstat (limited to 'xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp')
-rw-r--r--xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp104
1 files changed, 104 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];
+ }
+}