diff options
author | Dan Sinclair <dsinclair@chromium.org> | 2016-03-14 14:14:16 -0400 |
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committer | Dan Sinclair <dsinclair@chromium.org> | 2016-03-14 14:14:16 -0400 |
commit | 1770c021cf998ff1b33855b1397f6ea8ff9f7cd7 (patch) | |
tree | 285e39abd4b5872d8cd632b9e331b0667fdc3eae /xfa/fxbarcode/pdf417/BC_PDF417ECModulusGF.cpp | |
parent | f766ad219f66543654520f6a1955836f519e26d1 (diff) | |
download | pdfium-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/pdf417/BC_PDF417ECModulusGF.cpp')
-rw-r--r-- | xfa/fxbarcode/pdf417/BC_PDF417ECModulusGF.cpp | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/xfa/fxbarcode/pdf417/BC_PDF417ECModulusGF.cpp b/xfa/fxbarcode/pdf417/BC_PDF417ECModulusGF.cpp new file mode 100644 index 0000000000..4779d80157 --- /dev/null +++ b/xfa/fxbarcode/pdf417/BC_PDF417ECModulusGF.cpp @@ -0,0 +1,120 @@ +// 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 "xfa/fxbarcode/pdf417/BC_PDF417Common.h" +#include "xfa/fxbarcode/pdf417/BC_PDF417ECModulusGF.h" +#include "xfa/fxbarcode/pdf417/BC_PDF417ECModulusPoly.h" +#include "xfa/fxbarcode/utils.h" + +CBC_PDF417ECModulusGF* CBC_PDF417ECModulusGF::PDF417_GF = NULL; +void CBC_PDF417ECModulusGF::Initialize(int32_t& e) { + PDF417_GF = + new CBC_PDF417ECModulusGF(CBC_PDF417Common::NUMBER_OF_CODEWORDS, 3, e); +} +void CBC_PDF417ECModulusGF::Finalize() { + delete PDF417_GF; +} +CBC_PDF417ECModulusGF::CBC_PDF417ECModulusGF(int32_t modulus, + int32_t generator, + int32_t& e) { + m_modulus = modulus; + m_expTable.SetSize(modulus); + m_logTable.SetSize(modulus); + int32_t x = 1; + for (int32_t i = 0; i < modulus; i++) { + m_expTable[i] = x; + x = (x * generator) % modulus; + } + for (int32_t j = 0; j < modulus - 1; j++) { + m_logTable[m_expTable[j]] = j; + } + CFX_Int32Array zero; + zero.Add(0); + m_zero = new CBC_PDF417ECModulusPoly(this, zero, e); + CFX_Int32Array one; + one.Add(1); + m_one = 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( + int32_t degree, + int32_t coefficient, + int32_t& e) { + if (degree < 0) { + e = BCExceptionIllegalArgument; + return NULL; + } + CBC_PDF417ECModulusPoly* modulusPoly = NULL; + if (coefficient == 0) { + modulusPoly = 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 = new CBC_PDF417ECModulusPoly(this, coefficients, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + return modulusPoly; +} +int32_t CBC_PDF417ECModulusGF::add(int32_t a, int32_t b) { + return (a + b) % m_modulus; +} +int32_t CBC_PDF417ECModulusGF::subtract(int32_t a, int32_t b) { + return (m_modulus + a - b) % m_modulus; +} +int32_t CBC_PDF417ECModulusGF::exp(int32_t a) { + return m_expTable[a]; +} +int32_t CBC_PDF417ECModulusGF::log(int32_t a, int32_t& e) { + if (a == 0) { + e = BCExceptionIllegalArgument; + return -1; + } + return m_logTable[a]; +} +int32_t CBC_PDF417ECModulusGF::inverse(int32_t a, int32_t& e) { + if (a == 0) { + e = BCExceptionIllegalArgument; + return -1; + } + return m_expTable[m_modulus - m_logTable[a] - 1]; +} +int32_t CBC_PDF417ECModulusGF::multiply(int32_t a, int32_t b) { + if (a == 0 || b == 0) { + return 0; + } + return m_expTable[(m_logTable[a] + m_logTable[b]) % (m_modulus - 1)]; +} +int32_t CBC_PDF417ECModulusGF::getSize() { + return m_modulus; +} |