1 files changed, 140 insertions, 0 deletions
diff --git a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp
new file mode 100644
index 0000000000..bb045ac24c
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+++ b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp
@@ -0,0 +1,140 @@
+// 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_ReedSolomonGF256Poly.h"
+#include "BC_ReedSolomonGF256.h"
+CBC_ReedSolomonGF256 *CBC_ReedSolomonGF256::QRCodeFild = NULL;
+CBC_ReedSolomonGF256 *CBC_ReedSolomonGF256::DataMatrixField = NULL;
+void CBC_ReedSolomonGF256::Initialize()
+{
+    QRCodeFild = FX_NEW CBC_ReedSolomonGF256(0x011D);
+    QRCodeFild->Init();
+    DataMatrixField = FX_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(FX_INT32 primitive)
+{
+    FX_INT32 x = 1;
+    for(FX_INT32 j = 0; j < 256; j++) {
+        m_expTable[j] = x;
+        x <<= 1;
+        if(x >= 0x100) {
+            x ^= primitive;
+        }
+    }
+    for(FX_INT32 i = 0; i < 255; i++) {
+        m_logTable[m_expTable[i]] = i;
+    }
+    m_logTable[0] = 0;
+}
+void CBC_ReedSolomonGF256::Init()
+{
+    m_zero = FX_NEW CBC_ReedSolomonGF256Poly(this, 0);
+    m_one = FX_NEW CBC_ReedSolomonGF256Poly(this, 1);
+}
+CBC_ReedSolomonGF256::~CBC_ReedSolomonGF256()
+{
+    if(m_zero != NULL) {
+        delete m_zero;
+        m_zero = NULL;
+    }
+    if(m_one != NULL) {
+        delete m_one;
+        m_one = NULL;
+    }
+}
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256::GetZero()
+{
+    return m_zero;
+}
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256::GetOne()
+{
+    return m_one;
+}
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256::BuildMonomial(FX_INT32 degree, FX_INT32 coefficient, FX_INT32 &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 = FX_NEW CBC_ReedSolomonGF256Poly();
+    temp->Init(this, &coefficients, e);
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    return temp;
+}
+FX_INT32 CBC_ReedSolomonGF256::AddOrSubtract(FX_INT32 a, FX_INT32 b)
+{
+    return a ^ b;
+}
+FX_INT32 CBC_ReedSolomonGF256::Exp(FX_INT32 a)
+{
+    return m_expTable[a];
+}
+FX_INT32 CBC_ReedSolomonGF256::Log(FX_INT32 a, FX_INT32 &e)
+{
+    if(a == 0) {
+        e = BCExceptionAIsZero;
+        BC_EXCEPTION_CHECK_ReturnValue(e, 0);
+    }
+    return m_logTable[a];
+}
+FX_INT32 CBC_ReedSolomonGF256::Inverse(FX_INT32 a, FX_INT32 &e)
+{
+    if(a == 0) {
+        e = BCExceptionAIsZero;
+        BC_EXCEPTION_CHECK_ReturnValue(e, 0);
+    }
+    return m_expTable[255 - m_logTable[a]];
+}
+FX_INT32 CBC_ReedSolomonGF256::Multiply(FX_INT32 a, FX_INT32 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];
+}