1 files changed, 126 insertions, 0 deletions
diff --git a/xfa/src/fxbarcode/pdf417/BC_PDF417ECModulusGF.cpp b/xfa/src/fxbarcode/pdf417/BC_PDF417ECModulusGF.cpp
new file mode 100644
index 0000000000..7619854bcb
--- /dev/null
+++ b/xfa/src/fxbarcode/pdf417/BC_PDF417ECModulusGF.cpp
@@ -0,0 +1,126 @@
+// 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 2012 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_PDF417Common.h"
+#include "BC_PDF417ECModulusPoly.h"
+#include "BC_PDF417ECModulusGF.h"
+CBC_PDF417ECModulusGF* CBC_PDF417ECModulusGF::PDF417_GF = NULL;
+void CBC_PDF417ECModulusGF::Initialize(FX_INT32 &e)
+{
+    PDF417_GF = FX_NEW CBC_PDF417ECModulusGF(CBC_PDF417Common::NUMBER_OF_CODEWORDS, 3, e);
+}
+void CBC_PDF417ECModulusGF::Finalize()
+{
+    delete PDF417_GF;
+}
+CBC_PDF417ECModulusGF::CBC_PDF417ECModulusGF(FX_INT32 modulus, FX_INT32 generator, FX_INT32 &e)
+{
+    m_modulus = modulus;
+    m_expTable.SetSize(modulus);
+    m_logTable.SetSize(modulus);
+    FX_INT32 x = 1;
+    for (FX_INT32 i = 0; i < modulus; i++) {
+        m_expTable[i] = x;
+        x = (x * generator) % modulus;
+    }
+    for (FX_INT32 j = 0; j < modulus - 1; j++) {
+        m_logTable[m_expTable[j]] = j;
+    }
+    CFX_Int32Array zero;
+    zero.Add(0);
+    m_zero = FX_NEW CBC_PDF417ECModulusPoly(this, zero, e);
+    CFX_Int32Array one;
+    one.Add(1);
+    m_one = FX_NEW CBC_PDF417ECModulusPoly(this, one, e);
+}
+CBC_PDF417ECModulusGF::~CBC_PDF417ECModulusGF()
+{
+    delete m_zero;
+    delete m_one;
+}
+CBC_PDF417ECModulusPoly* CBC_PDF417ECModulusGF::getZero()
+{
+    return m_zero;
+}
+CBC_PDF417ECModulusPoly* CBC_PDF417ECModulusGF::getOne()
+{
+    return m_one;
+}
+CBC_PDF417ECModulusPoly* CBC_PDF417ECModulusGF::buildMonomial(FX_INT32 degree, FX_INT32 coefficient, FX_INT32 &e)
+{
+    if (degree < 0) {
+        e = BCExceptionIllegalArgument;
+        return NULL;
+    }
+    CBC_PDF417ECModulusPoly* modulusPoly = NULL;
+    if (coefficient == 0) {
+        modulusPoly = FX_NEW CBC_PDF417ECModulusPoly(m_zero->getField(), m_zero->getCoefficients(), e);
+        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+        return modulusPoly;
+    }
+    CFX_Int32Array coefficients;
+    coefficients.SetSize(degree + 1);
+    coefficients[0] = coefficient;
+    modulusPoly = FX_NEW CBC_PDF417ECModulusPoly(this, coefficients, e);
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    return modulusPoly;
+}
+FX_INT32 CBC_PDF417ECModulusGF::add(FX_INT32 a, FX_INT32 b)
+{
+    return (a + b) % m_modulus;
+}
+FX_INT32 CBC_PDF417ECModulusGF::subtract(FX_INT32 a, FX_INT32 b)
+{
+    return (m_modulus + a - b) % m_modulus;
+}
+FX_INT32 CBC_PDF417ECModulusGF::exp(FX_INT32 a)
+{
+    return m_expTable[a];
+}
+FX_INT32 CBC_PDF417ECModulusGF::log(FX_INT32 a, FX_INT32 &e)
+{
+    if (a == 0) {
+        e = BCExceptionIllegalArgument;
+        return -1;
+    }
+    return m_logTable[a];
+}
+FX_INT32 CBC_PDF417ECModulusGF::inverse(FX_INT32 a, FX_INT32 &e)
+{
+    if (a == 0) {
+        e = BCExceptionIllegalArgument;
+        return -1;
+    }
+    return m_expTable[m_modulus - m_logTable[a] - 1];
+}
+FX_INT32 CBC_PDF417ECModulusGF::multiply(FX_INT32 a, FX_INT32 b)
+{
+    if (a == 0 || b == 0) {
+        return 0;
+    }
+    return m_expTable[(m_logTable[a] + m_logTable[b]) % (m_modulus - 1)];
+}
+FX_INT32 CBC_PDF417ECModulusGF::getSize()
+{
+    return m_modulus;
+}