1 files changed, 100 insertions, 0 deletions
diff --git a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp
new file mode 100644
index 0000000000..1fc8b6685a
--- /dev/null
+++ b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp
@@ -0,0 +1,100 @@
+// 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 "../../barcode.h"
+#include "BC_ReedSolomonGF256.h"
+#include "BC_ReedSolomonGF256Poly.h"
+#include "BC_ReedSolomon.h"
+CBC_ReedSolomonEncoder::CBC_ReedSolomonEncoder(CBC_ReedSolomonGF256* field)
+{
+    m_field = field;
+}
+void CBC_ReedSolomonEncoder::Init()
+{
+    m_cachedGenerators.Add(FX_NEW CBC_ReedSolomonGF256Poly(m_field, 1));
+}
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonEncoder::BuildGenerator(FX_INT32 degree, FX_INT32 &e)
+{
+    if(degree >= m_cachedGenerators.GetSize()) {
+        CBC_ReedSolomonGF256Poly* lastGenerator = (CBC_ReedSolomonGF256Poly*)(m_cachedGenerators[m_cachedGenerators.GetSize() - 1]);
+        for(FX_INT32 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, FX_INT32 ecBytes, FX_INT32 &e)
+{
+    if(ecBytes == 0) {
+        e = BCExceptionNoCorrectionBytes;
+        BC_EXCEPTION_CHECK_ReturnVoid(e);
+    }
+    FX_INT32 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(FX_INT32 x = 0; x < dataBytes; x++) {
+        infoCoefficients[x] = toEncode->operator [](x);
+    }
+    CBC_ReedSolomonGF256Poly info;
+    info.Init(m_field, &infoCoefficients, e);
+    BC_EXCEPTION_CHECK_ReturnVoid(e);
+    CBC_ReedSolomonGF256Poly* rsg = info.MultiplyByMonomial(ecBytes, 1, e);
+    BC_EXCEPTION_CHECK_ReturnVoid(e);
+    CBC_AutoPtr<CBC_ReedSolomonGF256Poly> infoTemp(rsg);
+    CFX_PtrArray *pa = infoTemp->Divide(generator, e);
+    BC_EXCEPTION_CHECK_ReturnVoid(e);
+    CBC_AutoPtr<CFX_PtrArray > temp(pa);
+    CBC_ReedSolomonGF256Poly* remainder = (CBC_ReedSolomonGF256Poly*)(temp->operator [](1));
+    CFX_Int32Array* coefficients = remainder->GetCoefficients();
+    FX_INT32 numZeroCoefficients = ecBytes - coefficients->GetSize();
+    for(FX_INT32 i = 0; i < numZeroCoefficients; i++) {
+        (*toEncode)[dataBytes + i] = 0;
+    }
+    for(FX_INT32 y = 0; y < coefficients->GetSize(); y++) {
+        (*toEncode)[dataBytes + numZeroCoefficients + y] =
+            coefficients->operator [](y);
+    }
+    for (FX_INT32 k = 0; k < temp->GetSize(); k++) {
+        delete (CBC_ReedSolomonGF256Poly*)(*temp)[k];
+    }
+}
+CBC_ReedSolomonEncoder::~CBC_ReedSolomonEncoder()
+{
+    for (FX_INT32 i = 0; i < m_cachedGenerators.GetSize(); i++) {
+        delete (CBC_ReedSolomonGF256Poly*)m_cachedGenerators[i];
+    }
+}