From 99ffdb0b9b488d743331646dc410f26b71e1f037 Mon Sep 17 00:00:00 2001 From: Tom Sepez Date: Tue, 26 Jan 2016 14:51:21 -0800 Subject: Fix DOS newlines R=thestig@chromium.org Review URL: https://codereview.chromium.org/1636873004 . --- .../common/reedsolomon/BC_ReedSolomon.cpp | 204 ++++---- .../fxbarcode/common/reedsolomon/BC_ReedSolomon.h | 48 +- .../common/reedsolomon/BC_ReedSolomonDecoder.cpp | 478 +++++++++---------- .../common/reedsolomon/BC_ReedSolomonDecoder.h | 60 +-- .../common/reedsolomon/BC_ReedSolomonGF256.cpp | 260 +++++------ .../common/reedsolomon/BC_ReedSolomonGF256.h | 72 +-- .../common/reedsolomon/BC_ReedSolomonGF256Poly.cpp | 518 ++++++++++----------- .../common/reedsolomon/BC_ReedSolomonGF256Poly.h | 76 +-- 8 files changed, 858 insertions(+), 858 deletions(-) (limited to 'xfa/src/fxbarcode/common/reedsolomon') diff --git a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp index a14a2d9cb5..af526a7ead 100644 --- a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp +++ b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp @@ -1,102 +1,102 @@ -// 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 "xfa/src/fxbarcode/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(new CBC_ReedSolomonGF256Poly(m_field, 1)); -} -CBC_ReedSolomonGF256Poly* CBC_ReedSolomonEncoder::BuildGenerator(int32_t degree, - int32_t& e) { - if (degree >= m_cachedGenerators.GetSize()) { - CBC_ReedSolomonGF256Poly* lastGenerator = - (CBC_ReedSolomonGF256Poly*)(m_cachedGenerators - [m_cachedGenerators.GetSize() - 1]); - for (int32_t 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, - int32_t ecBytes, - int32_t& e) { - if (ecBytes == 0) { - e = BCExceptionNoCorrectionBytes; - BC_EXCEPTION_CHECK_ReturnVoid(e); - } - int32_t 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 (int32_t 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 infoTemp(rsg); - CFX_PtrArray* pa = infoTemp->Divide(generator, e); - BC_EXCEPTION_CHECK_ReturnVoid(e); - CBC_AutoPtr temp(pa); - CBC_ReedSolomonGF256Poly* remainder = - (CBC_ReedSolomonGF256Poly*)(temp->operator[](1)); - CFX_Int32Array* coefficients = remainder->GetCoefficients(); - int32_t numZeroCoefficients = ecBytes - coefficients->GetSize(); - for (int32_t i = 0; i < numZeroCoefficients; i++) { - (*toEncode)[dataBytes + i] = 0; - } - for (int32_t y = 0; y < coefficients->GetSize(); y++) { - (*toEncode)[dataBytes + numZeroCoefficients + y] = - coefficients->operator[](y); - } - for (int32_t k = 0; k < temp->GetSize(); k++) { - delete (CBC_ReedSolomonGF256Poly*)(*temp)[k]; - } -} -CBC_ReedSolomonEncoder::~CBC_ReedSolomonEncoder() { - for (int32_t i = 0; i < m_cachedGenerators.GetSize(); i++) { - delete (CBC_ReedSolomonGF256Poly*)m_cachedGenerators[i]; - } -} +// 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 "xfa/src/fxbarcode/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(new CBC_ReedSolomonGF256Poly(m_field, 1)); +} +CBC_ReedSolomonGF256Poly* CBC_ReedSolomonEncoder::BuildGenerator(int32_t degree, + int32_t& e) { + if (degree >= m_cachedGenerators.GetSize()) { + CBC_ReedSolomonGF256Poly* lastGenerator = + (CBC_ReedSolomonGF256Poly*)(m_cachedGenerators + [m_cachedGenerators.GetSize() - 1]); + for (int32_t 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, + int32_t ecBytes, + int32_t& e) { + if (ecBytes == 0) { + e = BCExceptionNoCorrectionBytes; + BC_EXCEPTION_CHECK_ReturnVoid(e); + } + int32_t 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 (int32_t 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 infoTemp(rsg); + CFX_PtrArray* pa = infoTemp->Divide(generator, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + CBC_AutoPtr temp(pa); + CBC_ReedSolomonGF256Poly* remainder = + (CBC_ReedSolomonGF256Poly*)(temp->operator[](1)); + CFX_Int32Array* coefficients = remainder->GetCoefficients(); + int32_t numZeroCoefficients = ecBytes - coefficients->GetSize(); + for (int32_t i = 0; i < numZeroCoefficients; i++) { + (*toEncode)[dataBytes + i] = 0; + } + for (int32_t y = 0; y < coefficients->GetSize(); y++) { + (*toEncode)[dataBytes + numZeroCoefficients + y] = + coefficients->operator[](y); + } + for (int32_t k = 0; k < temp->GetSize(); k++) { + delete (CBC_ReedSolomonGF256Poly*)(*temp)[k]; + } +} +CBC_ReedSolomonEncoder::~CBC_ReedSolomonEncoder() { + for (int32_t i = 0; i < m_cachedGenerators.GetSize(); i++) { + delete (CBC_ReedSolomonGF256Poly*)m_cachedGenerators[i]; + } +} diff --git a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomon.h b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomon.h index 6725636408..138163b10d 100644 --- a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomon.h +++ b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomon.h @@ -1,24 +1,24 @@ -// 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 - -#ifndef _BC_READSOLOMON_H_ -#define _BC_READSOLOMON_H_ -class CBC_ReedSolomonGF256; -class CBC_ReedSolomonGF256Poly; -class CBC_ReedSolomonEncoder { - private: - CBC_ReedSolomonGF256* m_field; - CFX_PtrArray m_cachedGenerators; - CBC_ReedSolomonGF256Poly* BuildGenerator(int32_t degree, int32_t& e); - - public: - CBC_ReedSolomonEncoder(CBC_ReedSolomonGF256* field); - virtual ~CBC_ReedSolomonEncoder(); - - void Encode(CFX_Int32Array* toEncode, int32_t ecBytes, int32_t& e); - virtual void Init(); -}; -#endif +// 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 + +#ifndef _BC_READSOLOMON_H_ +#define _BC_READSOLOMON_H_ +class CBC_ReedSolomonGF256; +class CBC_ReedSolomonGF256Poly; +class CBC_ReedSolomonEncoder { + private: + CBC_ReedSolomonGF256* m_field; + CFX_PtrArray m_cachedGenerators; + CBC_ReedSolomonGF256Poly* BuildGenerator(int32_t degree, int32_t& e); + + public: + CBC_ReedSolomonEncoder(CBC_ReedSolomonGF256* field); + virtual ~CBC_ReedSolomonEncoder(); + + void Encode(CFX_Int32Array* toEncode, int32_t ecBytes, int32_t& e); + virtual void Init(); +}; +#endif diff --git a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.cpp b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.cpp index 4ee87a4fa7..b053f2a784 100644 --- a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.cpp +++ b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.cpp @@ -1,239 +1,239 @@ -// 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 "xfa/src/fxbarcode/barcode.h" -#include "BC_ReedSolomonGF256.h" -#include "BC_ReedSolomonGF256Poly.h" -#include "BC_ReedSolomonDecoder.h" -CBC_ReedSolomonDecoder::CBC_ReedSolomonDecoder(CBC_ReedSolomonGF256* field) { - m_field = field; -} -CBC_ReedSolomonDecoder::~CBC_ReedSolomonDecoder() {} -void CBC_ReedSolomonDecoder::Decode(CFX_Int32Array* received, - int32_t twoS, - int32_t& e) { - CBC_ReedSolomonGF256Poly poly; - poly.Init(m_field, received, e); - BC_EXCEPTION_CHECK_ReturnVoid(e); - CFX_Int32Array syndromeCoefficients; - syndromeCoefficients.SetSize(twoS); - FX_BOOL dataMatrix = FALSE; - FX_BOOL noError = TRUE; - for (int32_t i = 0; i < twoS; i++) { - int32_t eval = poly.EvaluateAt(m_field->Exp(dataMatrix ? i + 1 : i)); - syndromeCoefficients[twoS - 1 - i] = eval; - if (eval != 0) { - noError = FALSE; - } - } - if (noError) { - return; - } - CBC_ReedSolomonGF256Poly syndrome; - syndrome.Init(m_field, &syndromeCoefficients, e); - BC_EXCEPTION_CHECK_ReturnVoid(e); - CBC_ReedSolomonGF256Poly* rsg = m_field->BuildMonomial(twoS, 1, e); - BC_EXCEPTION_CHECK_ReturnVoid(e); - CBC_AutoPtr temp(rsg); - CFX_PtrArray* pa = RunEuclideanAlgorithm(temp.get(), &syndrome, twoS, e); - BC_EXCEPTION_CHECK_ReturnVoid(e); - CBC_AutoPtr sigmaOmega(pa); - CBC_AutoPtr sigma( - (CBC_ReedSolomonGF256Poly*)(*sigmaOmega)[0]); - CBC_AutoPtr omega( - (CBC_ReedSolomonGF256Poly*)(*sigmaOmega)[1]); - CFX_Int32Array* ia1 = FindErrorLocations(sigma.get(), e); - BC_EXCEPTION_CHECK_ReturnVoid(e); - CBC_AutoPtr errorLocations(ia1); - CFX_Int32Array* ia2 = - FindErrorMagnitudes(omega.get(), errorLocations.get(), dataMatrix, e); - BC_EXCEPTION_CHECK_ReturnVoid(e); - CBC_AutoPtr errorMagnitudes(ia2); - for (int32_t k = 0; k < errorLocations->GetSize(); k++) { - int32_t position = - received->GetSize() - 1 - m_field->Log((*errorLocations)[k], e); - BC_EXCEPTION_CHECK_ReturnVoid(e); - if (position < 0) { - e = BCExceptionBadErrorLocation; - BC_EXCEPTION_CHECK_ReturnVoid(e); - } - (*received)[position] = CBC_ReedSolomonGF256::AddOrSubtract( - (*received)[position], (*errorMagnitudes)[k]); - } -} -CFX_PtrArray* CBC_ReedSolomonDecoder::RunEuclideanAlgorithm( - CBC_ReedSolomonGF256Poly* a, - CBC_ReedSolomonGF256Poly* b, - int32_t R, - int32_t& e) { - if (a->GetDegree() < b->GetDegree()) { - CBC_ReedSolomonGF256Poly* temp = a; - a = b; - b = temp; - } - CBC_ReedSolomonGF256Poly* rsg1 = a->Clone(e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr rLast(rsg1); - CBC_ReedSolomonGF256Poly* rsg2 = b->Clone(e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr r(rsg2); - CBC_ReedSolomonGF256Poly* rsg3 = m_field->GetOne()->Clone(e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr sLast(rsg3); - CBC_ReedSolomonGF256Poly* rsg4 = m_field->GetZero()->Clone(e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr s(rsg4); - CBC_ReedSolomonGF256Poly* rsg5 = m_field->GetZero()->Clone(e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr tLast(rsg5); - CBC_ReedSolomonGF256Poly* rsg6 = m_field->GetOne()->Clone(e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr t(rsg6); - while (r->GetDegree() >= R / 2) { - CBC_AutoPtr rLastLast = rLast; - CBC_AutoPtr sLastLast = sLast; - CBC_AutoPtr tLastlast = tLast; - rLast = r; - sLast = s; - tLast = t; - if (rLast->IsZero()) { - e = BCExceptionR_I_1IsZero; - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - } - CBC_ReedSolomonGF256Poly* rsg7 = rLastLast->Clone(e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr rTemp(rsg7); - r = rTemp; - CBC_ReedSolomonGF256Poly* rsg8 = m_field->GetZero()->Clone(e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr q(rsg8); - int32_t denominatorLeadingTerm = rLast->GetCoefficients(rLast->GetDegree()); - int32_t dltInverse = m_field->Inverse(denominatorLeadingTerm, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - while (r->GetDegree() >= rLast->GetDegree() && !(r->IsZero())) { - int32_t degreeDiff = r->GetDegree() - rLast->GetDegree(); - int32_t scale = - m_field->Multiply(r->GetCoefficients(r->GetDegree()), dltInverse); - CBC_ReedSolomonGF256Poly* rsgp1 = - m_field->BuildMonomial(degreeDiff, scale, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr build(rsgp1); - CBC_ReedSolomonGF256Poly* rsgp2 = q->AddOrSubtract(build.get(), e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr temp(rsgp2); - q = temp; - CBC_ReedSolomonGF256Poly* rsgp3 = - rLast->MultiplyByMonomial(degreeDiff, scale, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr multiply(rsgp3); - CBC_ReedSolomonGF256Poly* rsgp4 = r->AddOrSubtract(multiply.get(), e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr temp3(rsgp4); - r = temp3; - } - CBC_ReedSolomonGF256Poly* rsg9 = q->Multiply(sLast.get(), e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr temp1(rsg9); - CBC_ReedSolomonGF256Poly* rsg10 = temp1->AddOrSubtract(sLastLast.get(), e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr temp2(rsg10); - s = temp2; - CBC_ReedSolomonGF256Poly* rsg11 = q->Multiply(tLast.get(), e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr temp5(rsg11); - CBC_ReedSolomonGF256Poly* rsg12 = temp5->AddOrSubtract(tLastlast.get(), e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr temp6(rsg12); - t = temp6; - } - int32_t sigmaTildeAtZero = t->GetCoefficients(0); - if (sigmaTildeAtZero == 0) { - e = BCExceptionIsZero; - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - } - int32_t inverse = m_field->Inverse(sigmaTildeAtZero, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_ReedSolomonGF256Poly* rsg13 = t->Multiply(inverse, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr sigma(rsg13); - CBC_ReedSolomonGF256Poly* rsg14 = r->Multiply(inverse, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr omega(rsg14); - CFX_PtrArray* temp = new CFX_PtrArray; - temp->Add(sigma.release()); - temp->Add(omega.release()); - return temp; -} -CFX_Int32Array* CBC_ReedSolomonDecoder::FindErrorLocations( - CBC_ReedSolomonGF256Poly* errorLocator, - int32_t& e) { - int32_t numErrors = errorLocator->GetDegree(); - if (numErrors == 1) { - CBC_AutoPtr temp(new CFX_Int32Array); - temp->Add(errorLocator->GetCoefficients(1)); - return temp.release(); - } - CFX_Int32Array* tempT = new CFX_Int32Array; - tempT->SetSize(numErrors); - CBC_AutoPtr result(tempT); - int32_t ie = 0; - for (int32_t i = 1; i < 256 && ie < numErrors; i++) { - if (errorLocator->EvaluateAt(i) == 0) { - (*result)[ie] = m_field->Inverse(i, ie); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - ie++; - } - } - if (ie != numErrors) { - e = BCExceptionDegreeNotMatchRoots; - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - } - return result.release(); -} -CFX_Int32Array* CBC_ReedSolomonDecoder::FindErrorMagnitudes( - CBC_ReedSolomonGF256Poly* errorEvaluator, - CFX_Int32Array* errorLocations, - FX_BOOL dataMatrix, - int32_t& e) { - int32_t s = errorLocations->GetSize(); - CFX_Int32Array* temp = new CFX_Int32Array; - temp->SetSize(s); - CBC_AutoPtr result(temp); - for (int32_t i = 0; i < s; i++) { - int32_t xiInverse = m_field->Inverse(errorLocations->operator[](i), e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - int32_t denominator = 1; - for (int32_t j = 0; j < s; j++) { - if (i != j) { - denominator = m_field->Multiply( - denominator, CBC_ReedSolomonGF256::AddOrSubtract( - 1, m_field->Multiply(errorLocations->operator[](j), - xiInverse))); - } - } - int32_t temp = m_field->Inverse(denominator, temp); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - (*result)[i] = - m_field->Multiply(errorEvaluator->EvaluateAt(xiInverse), temp); - } - return result.release(); -} +// 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 "xfa/src/fxbarcode/barcode.h" +#include "BC_ReedSolomonGF256.h" +#include "BC_ReedSolomonGF256Poly.h" +#include "BC_ReedSolomonDecoder.h" +CBC_ReedSolomonDecoder::CBC_ReedSolomonDecoder(CBC_ReedSolomonGF256* field) { + m_field = field; +} +CBC_ReedSolomonDecoder::~CBC_ReedSolomonDecoder() {} +void CBC_ReedSolomonDecoder::Decode(CFX_Int32Array* received, + int32_t twoS, + int32_t& e) { + CBC_ReedSolomonGF256Poly poly; + poly.Init(m_field, received, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + CFX_Int32Array syndromeCoefficients; + syndromeCoefficients.SetSize(twoS); + FX_BOOL dataMatrix = FALSE; + FX_BOOL noError = TRUE; + for (int32_t i = 0; i < twoS; i++) { + int32_t eval = poly.EvaluateAt(m_field->Exp(dataMatrix ? i + 1 : i)); + syndromeCoefficients[twoS - 1 - i] = eval; + if (eval != 0) { + noError = FALSE; + } + } + if (noError) { + return; + } + CBC_ReedSolomonGF256Poly syndrome; + syndrome.Init(m_field, &syndromeCoefficients, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + CBC_ReedSolomonGF256Poly* rsg = m_field->BuildMonomial(twoS, 1, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + CBC_AutoPtr temp(rsg); + CFX_PtrArray* pa = RunEuclideanAlgorithm(temp.get(), &syndrome, twoS, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + CBC_AutoPtr sigmaOmega(pa); + CBC_AutoPtr sigma( + (CBC_ReedSolomonGF256Poly*)(*sigmaOmega)[0]); + CBC_AutoPtr omega( + (CBC_ReedSolomonGF256Poly*)(*sigmaOmega)[1]); + CFX_Int32Array* ia1 = FindErrorLocations(sigma.get(), e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + CBC_AutoPtr errorLocations(ia1); + CFX_Int32Array* ia2 = + FindErrorMagnitudes(omega.get(), errorLocations.get(), dataMatrix, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + CBC_AutoPtr errorMagnitudes(ia2); + for (int32_t k = 0; k < errorLocations->GetSize(); k++) { + int32_t position = + received->GetSize() - 1 - m_field->Log((*errorLocations)[k], e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + if (position < 0) { + e = BCExceptionBadErrorLocation; + BC_EXCEPTION_CHECK_ReturnVoid(e); + } + (*received)[position] = CBC_ReedSolomonGF256::AddOrSubtract( + (*received)[position], (*errorMagnitudes)[k]); + } +} +CFX_PtrArray* CBC_ReedSolomonDecoder::RunEuclideanAlgorithm( + CBC_ReedSolomonGF256Poly* a, + CBC_ReedSolomonGF256Poly* b, + int32_t R, + int32_t& e) { + if (a->GetDegree() < b->GetDegree()) { + CBC_ReedSolomonGF256Poly* temp = a; + a = b; + b = temp; + } + CBC_ReedSolomonGF256Poly* rsg1 = a->Clone(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr rLast(rsg1); + CBC_ReedSolomonGF256Poly* rsg2 = b->Clone(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr r(rsg2); + CBC_ReedSolomonGF256Poly* rsg3 = m_field->GetOne()->Clone(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr sLast(rsg3); + CBC_ReedSolomonGF256Poly* rsg4 = m_field->GetZero()->Clone(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr s(rsg4); + CBC_ReedSolomonGF256Poly* rsg5 = m_field->GetZero()->Clone(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr tLast(rsg5); + CBC_ReedSolomonGF256Poly* rsg6 = m_field->GetOne()->Clone(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr t(rsg6); + while (r->GetDegree() >= R / 2) { + CBC_AutoPtr rLastLast = rLast; + CBC_AutoPtr sLastLast = sLast; + CBC_AutoPtr tLastlast = tLast; + rLast = r; + sLast = s; + tLast = t; + if (rLast->IsZero()) { + e = BCExceptionR_I_1IsZero; + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } + CBC_ReedSolomonGF256Poly* rsg7 = rLastLast->Clone(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr rTemp(rsg7); + r = rTemp; + CBC_ReedSolomonGF256Poly* rsg8 = m_field->GetZero()->Clone(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr q(rsg8); + int32_t denominatorLeadingTerm = rLast->GetCoefficients(rLast->GetDegree()); + int32_t dltInverse = m_field->Inverse(denominatorLeadingTerm, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + while (r->GetDegree() >= rLast->GetDegree() && !(r->IsZero())) { + int32_t degreeDiff = r->GetDegree() - rLast->GetDegree(); + int32_t scale = + m_field->Multiply(r->GetCoefficients(r->GetDegree()), dltInverse); + CBC_ReedSolomonGF256Poly* rsgp1 = + m_field->BuildMonomial(degreeDiff, scale, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr build(rsgp1); + CBC_ReedSolomonGF256Poly* rsgp2 = q->AddOrSubtract(build.get(), e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr temp(rsgp2); + q = temp; + CBC_ReedSolomonGF256Poly* rsgp3 = + rLast->MultiplyByMonomial(degreeDiff, scale, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr multiply(rsgp3); + CBC_ReedSolomonGF256Poly* rsgp4 = r->AddOrSubtract(multiply.get(), e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr temp3(rsgp4); + r = temp3; + } + CBC_ReedSolomonGF256Poly* rsg9 = q->Multiply(sLast.get(), e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr temp1(rsg9); + CBC_ReedSolomonGF256Poly* rsg10 = temp1->AddOrSubtract(sLastLast.get(), e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr temp2(rsg10); + s = temp2; + CBC_ReedSolomonGF256Poly* rsg11 = q->Multiply(tLast.get(), e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr temp5(rsg11); + CBC_ReedSolomonGF256Poly* rsg12 = temp5->AddOrSubtract(tLastlast.get(), e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr temp6(rsg12); + t = temp6; + } + int32_t sigmaTildeAtZero = t->GetCoefficients(0); + if (sigmaTildeAtZero == 0) { + e = BCExceptionIsZero; + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } + int32_t inverse = m_field->Inverse(sigmaTildeAtZero, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_ReedSolomonGF256Poly* rsg13 = t->Multiply(inverse, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr sigma(rsg13); + CBC_ReedSolomonGF256Poly* rsg14 = r->Multiply(inverse, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr omega(rsg14); + CFX_PtrArray* temp = new CFX_PtrArray; + temp->Add(sigma.release()); + temp->Add(omega.release()); + return temp; +} +CFX_Int32Array* CBC_ReedSolomonDecoder::FindErrorLocations( + CBC_ReedSolomonGF256Poly* errorLocator, + int32_t& e) { + int32_t numErrors = errorLocator->GetDegree(); + if (numErrors == 1) { + CBC_AutoPtr temp(new CFX_Int32Array); + temp->Add(errorLocator->GetCoefficients(1)); + return temp.release(); + } + CFX_Int32Array* tempT = new CFX_Int32Array; + tempT->SetSize(numErrors); + CBC_AutoPtr result(tempT); + int32_t ie = 0; + for (int32_t i = 1; i < 256 && ie < numErrors; i++) { + if (errorLocator->EvaluateAt(i) == 0) { + (*result)[ie] = m_field->Inverse(i, ie); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + ie++; + } + } + if (ie != numErrors) { + e = BCExceptionDegreeNotMatchRoots; + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } + return result.release(); +} +CFX_Int32Array* CBC_ReedSolomonDecoder::FindErrorMagnitudes( + CBC_ReedSolomonGF256Poly* errorEvaluator, + CFX_Int32Array* errorLocations, + FX_BOOL dataMatrix, + int32_t& e) { + int32_t s = errorLocations->GetSize(); + CFX_Int32Array* temp = new CFX_Int32Array; + temp->SetSize(s); + CBC_AutoPtr result(temp); + for (int32_t i = 0; i < s; i++) { + int32_t xiInverse = m_field->Inverse(errorLocations->operator[](i), e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + int32_t denominator = 1; + for (int32_t j = 0; j < s; j++) { + if (i != j) { + denominator = m_field->Multiply( + denominator, CBC_ReedSolomonGF256::AddOrSubtract( + 1, m_field->Multiply(errorLocations->operator[](j), + xiInverse))); + } + } + int32_t temp = m_field->Inverse(denominator, temp); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + (*result)[i] = + m_field->Multiply(errorEvaluator->EvaluateAt(xiInverse), temp); + } + return result.release(); +} diff --git a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.h b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.h index 747755c011..e230a3af74 100644 --- a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.h +++ b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.h @@ -1,30 +1,30 @@ -// 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 - -#ifndef _BC_REEDSOLOMONDECODER_H_ -#define _BC_REEDSOLOMONDECODER_H_ -class CBC_ReedSolomonGF256; -class CBC_ReedSolomonGF256Poly; -class CBC_ReedSolomonDecoder { - private: - CBC_ReedSolomonGF256* m_field; - - public: - CBC_ReedSolomonDecoder(CBC_ReedSolomonGF256* field); - virtual ~CBC_ReedSolomonDecoder(); - void Decode(CFX_Int32Array* received, int32_t twoS, int32_t& e); - CFX_PtrArray* RunEuclideanAlgorithm(CBC_ReedSolomonGF256Poly* a, - CBC_ReedSolomonGF256Poly* b, - int32_t R, - int32_t& e); - CFX_Int32Array* FindErrorLocations(CBC_ReedSolomonGF256Poly* errorLocator, - int32_t& e); - CFX_Int32Array* FindErrorMagnitudes(CBC_ReedSolomonGF256Poly* errorEvaluator, - CFX_Int32Array* errorLocations, - FX_BOOL dataMatrix, - int32_t& e); -}; -#endif +// 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 + +#ifndef _BC_REEDSOLOMONDECODER_H_ +#define _BC_REEDSOLOMONDECODER_H_ +class CBC_ReedSolomonGF256; +class CBC_ReedSolomonGF256Poly; +class CBC_ReedSolomonDecoder { + private: + CBC_ReedSolomonGF256* m_field; + + public: + CBC_ReedSolomonDecoder(CBC_ReedSolomonGF256* field); + virtual ~CBC_ReedSolomonDecoder(); + void Decode(CFX_Int32Array* received, int32_t twoS, int32_t& e); + CFX_PtrArray* RunEuclideanAlgorithm(CBC_ReedSolomonGF256Poly* a, + CBC_ReedSolomonGF256Poly* b, + int32_t R, + int32_t& e); + CFX_Int32Array* FindErrorLocations(CBC_ReedSolomonGF256Poly* errorLocator, + int32_t& e); + CFX_Int32Array* FindErrorMagnitudes(CBC_ReedSolomonGF256Poly* errorEvaluator, + CFX_Int32Array* errorLocations, + FX_BOOL dataMatrix, + int32_t& e); +}; +#endif diff --git a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp index 0957ca51b7..97aa70d786 100644 --- a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp +++ b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp @@ -1,130 +1,130 @@ -// 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 "xfa/src/fxbarcode/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 = new CBC_ReedSolomonGF256(0x011D); - QRCodeFild->Init(); - DataMatrixField = 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(int32_t primitive) { - int32_t x = 1; - for (int32_t j = 0; j < 256; j++) { - m_expTable[j] = x; - x <<= 1; - if (x >= 0x100) { - x ^= primitive; - } - } - for (int32_t i = 0; i < 255; i++) { - m_logTable[m_expTable[i]] = i; - } - m_logTable[0] = 0; -} -void CBC_ReedSolomonGF256::Init() { - m_zero = new CBC_ReedSolomonGF256Poly(this, 0); - m_one = 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( - int32_t degree, - int32_t coefficient, - int32_t& 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 = new CBC_ReedSolomonGF256Poly(); - temp->Init(this, &coefficients, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - return temp; -} -int32_t CBC_ReedSolomonGF256::AddOrSubtract(int32_t a, int32_t b) { - return a ^ b; -} -int32_t CBC_ReedSolomonGF256::Exp(int32_t a) { - return m_expTable[a]; -} -int32_t CBC_ReedSolomonGF256::Log(int32_t a, int32_t& e) { - if (a == 0) { - e = BCExceptionAIsZero; - BC_EXCEPTION_CHECK_ReturnValue(e, 0); - } - return m_logTable[a]; -} -int32_t CBC_ReedSolomonGF256::Inverse(int32_t a, int32_t& e) { - if (a == 0) { - e = BCExceptionAIsZero; - BC_EXCEPTION_CHECK_ReturnValue(e, 0); - } - return m_expTable[255 - m_logTable[a]]; -} -int32_t CBC_ReedSolomonGF256::Multiply(int32_t a, int32_t 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]; -} +// 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 "xfa/src/fxbarcode/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 = new CBC_ReedSolomonGF256(0x011D); + QRCodeFild->Init(); + DataMatrixField = 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(int32_t primitive) { + int32_t x = 1; + for (int32_t j = 0; j < 256; j++) { + m_expTable[j] = x; + x <<= 1; + if (x >= 0x100) { + x ^= primitive; + } + } + for (int32_t i = 0; i < 255; i++) { + m_logTable[m_expTable[i]] = i; + } + m_logTable[0] = 0; +} +void CBC_ReedSolomonGF256::Init() { + m_zero = new CBC_ReedSolomonGF256Poly(this, 0); + m_one = 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( + int32_t degree, + int32_t coefficient, + int32_t& 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 = new CBC_ReedSolomonGF256Poly(); + temp->Init(this, &coefficients, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + return temp; +} +int32_t CBC_ReedSolomonGF256::AddOrSubtract(int32_t a, int32_t b) { + return a ^ b; +} +int32_t CBC_ReedSolomonGF256::Exp(int32_t a) { + return m_expTable[a]; +} +int32_t CBC_ReedSolomonGF256::Log(int32_t a, int32_t& e) { + if (a == 0) { + e = BCExceptionAIsZero; + BC_EXCEPTION_CHECK_ReturnValue(e, 0); + } + return m_logTable[a]; +} +int32_t CBC_ReedSolomonGF256::Inverse(int32_t a, int32_t& e) { + if (a == 0) { + e = BCExceptionAIsZero; + BC_EXCEPTION_CHECK_ReturnValue(e, 0); + } + return m_expTable[255 - m_logTable[a]]; +} +int32_t CBC_ReedSolomonGF256::Multiply(int32_t a, int32_t 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]; +} diff --git a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h index 58e2f9ec3e..d414f13d3c 100644 --- a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h +++ b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h @@ -1,36 +1,36 @@ -// 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 - -#ifndef _BC_REEDSOLOMONGF256_H_ -#define _BC_REEDSOLOMONGF256_H_ -class CBC_ReedSolomonGF256Poly; -class CBC_ReedSolomonGF256 { - public: - static void Initialize(); - static void Finalize(); - static CBC_ReedSolomonGF256* QRCodeFild; - static CBC_ReedSolomonGF256* DataMatrixField; - CBC_ReedSolomonGF256(int32_t primitive); - virtual ~CBC_ReedSolomonGF256(); - CBC_ReedSolomonGF256Poly* GetZero(); - CBC_ReedSolomonGF256Poly* GetOne(); - CBC_ReedSolomonGF256Poly* BuildMonomial(int32_t degree, - int32_t coefficient, - int32_t& e); - static int32_t AddOrSubtract(int32_t a, int32_t b); - int32_t Exp(int32_t a); - int32_t Log(int32_t a, int32_t& e); - int32_t Inverse(int32_t a, int32_t& e); - int32_t Multiply(int32_t a, int32_t b); - virtual void Init(); - - private: - int32_t m_expTable[256]; - int32_t m_logTable[256]; - CBC_ReedSolomonGF256Poly* m_zero; - CBC_ReedSolomonGF256Poly* m_one; -}; -#endif +// 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 + +#ifndef _BC_REEDSOLOMONGF256_H_ +#define _BC_REEDSOLOMONGF256_H_ +class CBC_ReedSolomonGF256Poly; +class CBC_ReedSolomonGF256 { + public: + static void Initialize(); + static void Finalize(); + static CBC_ReedSolomonGF256* QRCodeFild; + static CBC_ReedSolomonGF256* DataMatrixField; + CBC_ReedSolomonGF256(int32_t primitive); + virtual ~CBC_ReedSolomonGF256(); + CBC_ReedSolomonGF256Poly* GetZero(); + CBC_ReedSolomonGF256Poly* GetOne(); + CBC_ReedSolomonGF256Poly* BuildMonomial(int32_t degree, + int32_t coefficient, + int32_t& e); + static int32_t AddOrSubtract(int32_t a, int32_t b); + int32_t Exp(int32_t a); + int32_t Log(int32_t a, int32_t& e); + int32_t Inverse(int32_t a, int32_t& e); + int32_t Multiply(int32_t a, int32_t b); + virtual void Init(); + + private: + int32_t m_expTable[256]; + int32_t m_logTable[256]; + CBC_ReedSolomonGF256Poly* m_zero; + CBC_ReedSolomonGF256Poly* m_one; +}; +#endif diff --git a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp index f87cd5ba86..b1eed008cf 100644 --- a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp +++ b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp @@ -1,259 +1,259 @@ -// 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 "xfa/src/fxbarcode/barcode.h" -#include "BC_ReedSolomonGF256.h" -#include "BC_ReedSolomonGF256Poly.h" -CBC_ReedSolomonGF256Poly::CBC_ReedSolomonGF256Poly(CBC_ReedSolomonGF256* field, - int32_t coefficients) { - if (field == NULL) { - return; - } - m_field = field; - m_coefficients.Add(coefficients); -} -CBC_ReedSolomonGF256Poly::CBC_ReedSolomonGF256Poly() { - m_field = NULL; -} -void CBC_ReedSolomonGF256Poly::Init(CBC_ReedSolomonGF256* field, - CFX_Int32Array* coefficients, - int32_t& e) { - if (coefficients == NULL || coefficients->GetSize() == 0) { - e = BCExceptionCoefficientsSizeIsNull; - BC_EXCEPTION_CHECK_ReturnVoid(e); - } - m_field = field; - int32_t coefficientsLength = coefficients->GetSize(); - if ((coefficientsLength > 1 && (*coefficients)[0] == 0)) { - int32_t firstNonZero = 1; - while ((firstNonZero < coefficientsLength) && - ((*coefficients)[firstNonZero] == 0)) { - firstNonZero++; - } - if (firstNonZero == coefficientsLength) { - m_coefficients.Copy(*(m_field->GetZero()->GetCoefficients())); - } else { - m_coefficients.SetSize(coefficientsLength - firstNonZero); - for (int32_t i = firstNonZero, j = 0; i < coefficientsLength; i++, j++) { - m_coefficients[j] = coefficients->operator[](i); - } - } - } else { - m_coefficients.Copy(*coefficients); - } -} -CFX_Int32Array* CBC_ReedSolomonGF256Poly::GetCoefficients() { - return &m_coefficients; -} -int32_t CBC_ReedSolomonGF256Poly::GetDegree() { - return m_coefficients.GetSize() - 1; -} -FX_BOOL CBC_ReedSolomonGF256Poly::IsZero() { - return m_coefficients[0] == 0; -} -int32_t CBC_ReedSolomonGF256Poly::GetCoefficients(int32_t degree) { - return m_coefficients[m_coefficients.GetSize() - 1 - degree]; -} -int32_t CBC_ReedSolomonGF256Poly::EvaluateAt(int32_t a) { - if (a == 0) { - return GetCoefficients(0); - } - int32_t size = m_coefficients.GetSize(); - if (a == 1) { - int32_t result = 0; - for (int32_t i = 0; i < size; i++) { - result = CBC_ReedSolomonGF256::AddOrSubtract(result, m_coefficients[i]); - } - return result; - } - int32_t result = m_coefficients[0]; - for (int32_t j = 1; j < size; j++) { - result = CBC_ReedSolomonGF256::AddOrSubtract(m_field->Multiply(a, result), - m_coefficients[j]); - } - return result; -} -CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::Clone(int32_t& e) { - CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly(); - temp->Init(m_field, &m_coefficients, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - return temp; -} -CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::AddOrSubtract( - CBC_ReedSolomonGF256Poly* other, - int32_t& e) { - if (IsZero()) { - return other->Clone(e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - } - if (other->IsZero()) { - return this->Clone(e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - } - CFX_Int32Array smallerCoefficients; - smallerCoefficients.Copy(m_coefficients); - CFX_Int32Array largerCoefficients; - largerCoefficients.Copy(*(other->GetCoefficients())); - if (smallerCoefficients.GetSize() > largerCoefficients.GetSize()) { - CFX_Int32Array temp; - temp.Copy(smallerCoefficients); - smallerCoefficients.Copy(largerCoefficients); - largerCoefficients.Copy(temp); - } - CFX_Int32Array sumDiff; - sumDiff.SetSize(largerCoefficients.GetSize()); - int32_t lengthDiff = - largerCoefficients.GetSize() - smallerCoefficients.GetSize(); - for (int32_t i = 0; i < lengthDiff; i++) { - sumDiff[i] = largerCoefficients[i]; - } - for (int32_t j = lengthDiff; j < largerCoefficients.GetSize(); j++) { - sumDiff[j] = (CBC_ReedSolomonGF256::AddOrSubtract( - smallerCoefficients[j - lengthDiff], largerCoefficients[j])); - } - CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly(); - temp->Init(m_field, &sumDiff, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - return temp; -} -CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::Multiply( - CBC_ReedSolomonGF256Poly* other, - int32_t& e) { - if (IsZero() || other->IsZero()) { - CBC_ReedSolomonGF256Poly* temp = m_field->GetZero()->Clone(e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - return temp; - } - CFX_Int32Array aCoefficients; - aCoefficients.Copy(m_coefficients); - int32_t aLength = m_coefficients.GetSize(); - CFX_Int32Array bCoefficients; - bCoefficients.Copy(*(other->GetCoefficients())); - int32_t bLength = other->GetCoefficients()->GetSize(); - CFX_Int32Array product; - product.SetSize(aLength + bLength - 1); - for (int32_t i = 0; i < aLength; i++) { - int32_t aCoeff = m_coefficients[i]; - for (int32_t j = 0; j < bLength; j++) { - product[i + j] = CBC_ReedSolomonGF256::AddOrSubtract( - product[i + j], - m_field->Multiply(aCoeff, other->GetCoefficients()->operator[](j))); - } - } - CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly(); - temp->Init(m_field, &product, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - return temp; -} -CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::Multiply(int32_t scalar, - int32_t& e) { - if (scalar == 0) { - CBC_ReedSolomonGF256Poly* temp = m_field->GetZero()->Clone(e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - return temp; - } - if (scalar == 1) { - return this->Clone(e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - } - int32_t size = m_coefficients.GetSize(); - CFX_Int32Array product; - product.SetSize(size); - for (int32_t i = 0; i < size; i++) { - product[i] = m_field->Multiply(m_coefficients[i], scalar); - } - CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly(); - temp->Init(m_field, &product, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - return temp; -} -CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::MultiplyByMonomial( - int32_t degree, - int32_t coefficient, - int32_t& e) { - if (degree < 0) { - e = BCExceptionDegreeIsNegative; - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - } - if (coefficient == 0) { - CBC_ReedSolomonGF256Poly* temp = m_field->GetZero()->Clone(e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - return temp; - } - int32_t size = m_coefficients.GetSize(); - CFX_Int32Array product; - product.SetSize(size + degree); - for (int32_t i = 0; i < size; i++) { - product[i] = (m_field->Multiply(m_coefficients[i], coefficient)); - } - CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly(); - temp->Init(m_field, &product, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - return temp; -} -CFX_PtrArray* CBC_ReedSolomonGF256Poly::Divide(CBC_ReedSolomonGF256Poly* other, - int32_t& e) { - if (other->IsZero()) { - e = BCExceptionDivideByZero; - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - } - CBC_ReedSolomonGF256Poly* rsg1 = m_field->GetZero()->Clone(e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr quotient(rsg1); - CBC_ReedSolomonGF256Poly* rsg2 = this->Clone(e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr remainder(rsg2); - int32_t denominatorLeadingTerm = other->GetCoefficients(other->GetDegree()); - int32_t inverseDenominatorLeadingTeam = - m_field->Inverse(denominatorLeadingTerm, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - while (remainder->GetDegree() >= other->GetDegree() && !remainder->IsZero()) { - int32_t degreeDifference = remainder->GetDegree() - other->GetDegree(); - int32_t scale = - m_field->Multiply(remainder->GetCoefficients((remainder->GetDegree())), - inverseDenominatorLeadingTeam); - CBC_ReedSolomonGF256Poly* rsg3 = - other->MultiplyByMonomial(degreeDifference, scale, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr term(rsg3); - CBC_ReedSolomonGF256Poly* rsg4 = - m_field->BuildMonomial(degreeDifference, scale, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr iteratorQuotient(rsg4); - CBC_ReedSolomonGF256Poly* rsg5 = - quotient->AddOrSubtract(iteratorQuotient.get(), e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr temp(rsg5); - quotient = temp; - CBC_ReedSolomonGF256Poly* rsg6 = remainder->AddOrSubtract(term.get(), e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - CBC_AutoPtr temp1(rsg6); - remainder = temp1; - } - CFX_PtrArray* tempPtrA = new CFX_PtrArray; - tempPtrA->Add(quotient.release()); - tempPtrA->Add(remainder.release()); - return tempPtrA; -} -CBC_ReedSolomonGF256Poly::~CBC_ReedSolomonGF256Poly() { - m_coefficients.RemoveAll(); -} +// 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 "xfa/src/fxbarcode/barcode.h" +#include "BC_ReedSolomonGF256.h" +#include "BC_ReedSolomonGF256Poly.h" +CBC_ReedSolomonGF256Poly::CBC_ReedSolomonGF256Poly(CBC_ReedSolomonGF256* field, + int32_t coefficients) { + if (field == NULL) { + return; + } + m_field = field; + m_coefficients.Add(coefficients); +} +CBC_ReedSolomonGF256Poly::CBC_ReedSolomonGF256Poly() { + m_field = NULL; +} +void CBC_ReedSolomonGF256Poly::Init(CBC_ReedSolomonGF256* field, + CFX_Int32Array* coefficients, + int32_t& e) { + if (coefficients == NULL || coefficients->GetSize() == 0) { + e = BCExceptionCoefficientsSizeIsNull; + BC_EXCEPTION_CHECK_ReturnVoid(e); + } + m_field = field; + int32_t coefficientsLength = coefficients->GetSize(); + if ((coefficientsLength > 1 && (*coefficients)[0] == 0)) { + int32_t firstNonZero = 1; + while ((firstNonZero < coefficientsLength) && + ((*coefficients)[firstNonZero] == 0)) { + firstNonZero++; + } + if (firstNonZero == coefficientsLength) { + m_coefficients.Copy(*(m_field->GetZero()->GetCoefficients())); + } else { + m_coefficients.SetSize(coefficientsLength - firstNonZero); + for (int32_t i = firstNonZero, j = 0; i < coefficientsLength; i++, j++) { + m_coefficients[j] = coefficients->operator[](i); + } + } + } else { + m_coefficients.Copy(*coefficients); + } +} +CFX_Int32Array* CBC_ReedSolomonGF256Poly::GetCoefficients() { + return &m_coefficients; +} +int32_t CBC_ReedSolomonGF256Poly::GetDegree() { + return m_coefficients.GetSize() - 1; +} +FX_BOOL CBC_ReedSolomonGF256Poly::IsZero() { + return m_coefficients[0] == 0; +} +int32_t CBC_ReedSolomonGF256Poly::GetCoefficients(int32_t degree) { + return m_coefficients[m_coefficients.GetSize() - 1 - degree]; +} +int32_t CBC_ReedSolomonGF256Poly::EvaluateAt(int32_t a) { + if (a == 0) { + return GetCoefficients(0); + } + int32_t size = m_coefficients.GetSize(); + if (a == 1) { + int32_t result = 0; + for (int32_t i = 0; i < size; i++) { + result = CBC_ReedSolomonGF256::AddOrSubtract(result, m_coefficients[i]); + } + return result; + } + int32_t result = m_coefficients[0]; + for (int32_t j = 1; j < size; j++) { + result = CBC_ReedSolomonGF256::AddOrSubtract(m_field->Multiply(a, result), + m_coefficients[j]); + } + return result; +} +CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::Clone(int32_t& e) { + CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly(); + temp->Init(m_field, &m_coefficients, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + return temp; +} +CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::AddOrSubtract( + CBC_ReedSolomonGF256Poly* other, + int32_t& e) { + if (IsZero()) { + return other->Clone(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } + if (other->IsZero()) { + return this->Clone(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } + CFX_Int32Array smallerCoefficients; + smallerCoefficients.Copy(m_coefficients); + CFX_Int32Array largerCoefficients; + largerCoefficients.Copy(*(other->GetCoefficients())); + if (smallerCoefficients.GetSize() > largerCoefficients.GetSize()) { + CFX_Int32Array temp; + temp.Copy(smallerCoefficients); + smallerCoefficients.Copy(largerCoefficients); + largerCoefficients.Copy(temp); + } + CFX_Int32Array sumDiff; + sumDiff.SetSize(largerCoefficients.GetSize()); + int32_t lengthDiff = + largerCoefficients.GetSize() - smallerCoefficients.GetSize(); + for (int32_t i = 0; i < lengthDiff; i++) { + sumDiff[i] = largerCoefficients[i]; + } + for (int32_t j = lengthDiff; j < largerCoefficients.GetSize(); j++) { + sumDiff[j] = (CBC_ReedSolomonGF256::AddOrSubtract( + smallerCoefficients[j - lengthDiff], largerCoefficients[j])); + } + CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly(); + temp->Init(m_field, &sumDiff, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + return temp; +} +CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::Multiply( + CBC_ReedSolomonGF256Poly* other, + int32_t& e) { + if (IsZero() || other->IsZero()) { + CBC_ReedSolomonGF256Poly* temp = m_field->GetZero()->Clone(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + return temp; + } + CFX_Int32Array aCoefficients; + aCoefficients.Copy(m_coefficients); + int32_t aLength = m_coefficients.GetSize(); + CFX_Int32Array bCoefficients; + bCoefficients.Copy(*(other->GetCoefficients())); + int32_t bLength = other->GetCoefficients()->GetSize(); + CFX_Int32Array product; + product.SetSize(aLength + bLength - 1); + for (int32_t i = 0; i < aLength; i++) { + int32_t aCoeff = m_coefficients[i]; + for (int32_t j = 0; j < bLength; j++) { + product[i + j] = CBC_ReedSolomonGF256::AddOrSubtract( + product[i + j], + m_field->Multiply(aCoeff, other->GetCoefficients()->operator[](j))); + } + } + CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly(); + temp->Init(m_field, &product, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + return temp; +} +CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::Multiply(int32_t scalar, + int32_t& e) { + if (scalar == 0) { + CBC_ReedSolomonGF256Poly* temp = m_field->GetZero()->Clone(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + return temp; + } + if (scalar == 1) { + return this->Clone(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } + int32_t size = m_coefficients.GetSize(); + CFX_Int32Array product; + product.SetSize(size); + for (int32_t i = 0; i < size; i++) { + product[i] = m_field->Multiply(m_coefficients[i], scalar); + } + CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly(); + temp->Init(m_field, &product, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + return temp; +} +CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::MultiplyByMonomial( + int32_t degree, + int32_t coefficient, + int32_t& e) { + if (degree < 0) { + e = BCExceptionDegreeIsNegative; + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } + if (coefficient == 0) { + CBC_ReedSolomonGF256Poly* temp = m_field->GetZero()->Clone(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + return temp; + } + int32_t size = m_coefficients.GetSize(); + CFX_Int32Array product; + product.SetSize(size + degree); + for (int32_t i = 0; i < size; i++) { + product[i] = (m_field->Multiply(m_coefficients[i], coefficient)); + } + CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly(); + temp->Init(m_field, &product, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + return temp; +} +CFX_PtrArray* CBC_ReedSolomonGF256Poly::Divide(CBC_ReedSolomonGF256Poly* other, + int32_t& e) { + if (other->IsZero()) { + e = BCExceptionDivideByZero; + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } + CBC_ReedSolomonGF256Poly* rsg1 = m_field->GetZero()->Clone(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr quotient(rsg1); + CBC_ReedSolomonGF256Poly* rsg2 = this->Clone(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr remainder(rsg2); + int32_t denominatorLeadingTerm = other->GetCoefficients(other->GetDegree()); + int32_t inverseDenominatorLeadingTeam = + m_field->Inverse(denominatorLeadingTerm, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + while (remainder->GetDegree() >= other->GetDegree() && !remainder->IsZero()) { + int32_t degreeDifference = remainder->GetDegree() - other->GetDegree(); + int32_t scale = + m_field->Multiply(remainder->GetCoefficients((remainder->GetDegree())), + inverseDenominatorLeadingTeam); + CBC_ReedSolomonGF256Poly* rsg3 = + other->MultiplyByMonomial(degreeDifference, scale, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr term(rsg3); + CBC_ReedSolomonGF256Poly* rsg4 = + m_field->BuildMonomial(degreeDifference, scale, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr iteratorQuotient(rsg4); + CBC_ReedSolomonGF256Poly* rsg5 = + quotient->AddOrSubtract(iteratorQuotient.get(), e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr temp(rsg5); + quotient = temp; + CBC_ReedSolomonGF256Poly* rsg6 = remainder->AddOrSubtract(term.get(), e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_AutoPtr temp1(rsg6); + remainder = temp1; + } + CFX_PtrArray* tempPtrA = new CFX_PtrArray; + tempPtrA->Add(quotient.release()); + tempPtrA->Add(remainder.release()); + return tempPtrA; +} +CBC_ReedSolomonGF256Poly::~CBC_ReedSolomonGF256Poly() { + m_coefficients.RemoveAll(); +} diff --git a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h index 9f1a5dfac7..2ff7602eba 100644 --- a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h +++ b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h @@ -1,38 +1,38 @@ -// 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 - -#ifndef _BC_READSOLOMONGF256POLY_H_ -#define _BC_READSOLOMONGF256POLY_H_ -class CBC_ReedSolomonGF256; -class CBC_ReedSolomonGF256Poly { - public: - CBC_ReedSolomonGF256Poly(CBC_ReedSolomonGF256* field, int32_t coefficients); - CBC_ReedSolomonGF256Poly(); - virtual ~CBC_ReedSolomonGF256Poly(); - int32_t GetCoefficients(int32_t degree); - CFX_Int32Array* GetCoefficients(); - int32_t GetDegree(); - FX_BOOL IsZero(); - int32_t EvaluateAt(int32_t a); - CBC_ReedSolomonGF256Poly* AddOrSubtract(CBC_ReedSolomonGF256Poly* other, - int32_t& e); - CBC_ReedSolomonGF256Poly* Multiply(CBC_ReedSolomonGF256Poly* other, - int32_t& e); - CBC_ReedSolomonGF256Poly* Multiply(int32_t scalar, int32_t& e); - CBC_ReedSolomonGF256Poly* MultiplyByMonomial(int32_t degree, - int32_t coefficient, - int32_t& e); - CFX_PtrArray* Divide(CBC_ReedSolomonGF256Poly* other, int32_t& e); - CBC_ReedSolomonGF256Poly* Clone(int32_t& e); - virtual void Init(CBC_ReedSolomonGF256* field, - CFX_Int32Array* coefficients, - int32_t& e); - - private: - CBC_ReedSolomonGF256* m_field; - CFX_Int32Array m_coefficients; -}; -#endif +// 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 + +#ifndef _BC_READSOLOMONGF256POLY_H_ +#define _BC_READSOLOMONGF256POLY_H_ +class CBC_ReedSolomonGF256; +class CBC_ReedSolomonGF256Poly { + public: + CBC_ReedSolomonGF256Poly(CBC_ReedSolomonGF256* field, int32_t coefficients); + CBC_ReedSolomonGF256Poly(); + virtual ~CBC_ReedSolomonGF256Poly(); + int32_t GetCoefficients(int32_t degree); + CFX_Int32Array* GetCoefficients(); + int32_t GetDegree(); + FX_BOOL IsZero(); + int32_t EvaluateAt(int32_t a); + CBC_ReedSolomonGF256Poly* AddOrSubtract(CBC_ReedSolomonGF256Poly* other, + int32_t& e); + CBC_ReedSolomonGF256Poly* Multiply(CBC_ReedSolomonGF256Poly* other, + int32_t& e); + CBC_ReedSolomonGF256Poly* Multiply(int32_t scalar, int32_t& e); + CBC_ReedSolomonGF256Poly* MultiplyByMonomial(int32_t degree, + int32_t coefficient, + int32_t& e); + CFX_PtrArray* Divide(CBC_ReedSolomonGF256Poly* other, int32_t& e); + CBC_ReedSolomonGF256Poly* Clone(int32_t& e); + virtual void Init(CBC_ReedSolomonGF256* field, + CFX_Int32Array* coefficients, + int32_t& e); + + private: + CBC_ReedSolomonGF256* m_field; + CFX_Int32Array m_coefficients; +}; +#endif -- cgit v1.2.3