diff options
| author | Bo Xu <bo_xu@foxitsoftware.com> | 2015-01-09 17:27:21 -0800 |
|---|---|---|
| committer | Bo Xu <bo_xu@foxitsoftware.com> | 2015-01-09 17:27:21 -0800 |
| commit | a902979f7c6a39fbdd8e9fc1b2ce00553b655eeb (patch) | |
| tree | 854a51dbf1577ee8493db769ba7c8ab07cc72140 /xfa/src/fxbarcode/pdf417/BC_PDF417ECModulusGF.cpp | |
| parent | 5f21e9ddd181fc344f8d6070351858f98a25547e (diff) | |
| download | pdfium-a902979f7c6a39fbdd8e9fc1b2ce00553b655eeb.tar.xz | |
Organize barcode codes into modules.
Previously all the files in barcode are lumped together.
The naming of some files are inconsistent,
leading to difficult understanding of the structure.
Now files are grouped based on different barcode type like in zxing.
This also matches what it looks like in other xfa folders.
The file names in each folder could be further modified to be consistent.
R=tsepez@chromium.org
Review URL: https://codereview.chromium.org/842043002
Diffstat (limited to 'xfa/src/fxbarcode/pdf417/BC_PDF417ECModulusGF.cpp')
| -rw-r--r-- | xfa/src/fxbarcode/pdf417/BC_PDF417ECModulusGF.cpp | 126 |
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;
+}
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