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authorDan Sinclair <dsinclair@chromium.org>2016-03-14 14:14:16 -0400
committerDan Sinclair <dsinclair@chromium.org>2016-03-14 14:14:16 -0400
commit1770c021cf998ff1b33855b1397f6ea8ff9f7cd7 (patch)
tree285e39abd4b5872d8cd632b9e331b0667fdc3eae /xfa/fxbarcode/common/reedsolomon
parentf766ad219f66543654520f6a1955836f519e26d1 (diff)
downloadpdfium-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/common/reedsolomon')
-rw-r--r--xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp104
-rw-r--r--xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.h29
-rw-r--r--xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.cpp221
-rw-r--r--xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.h35
-rw-r--r--xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp124
-rw-r--r--xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h41
-rw-r--r--xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp254
-rw-r--r--xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h43
8 files changed, 851 insertions, 0 deletions
diff --git a/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp
new file mode 100644
index 0000000000..4d986cca26
--- /dev/null
+++ b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp
@@ -0,0 +1,104 @@
+// 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/fxbarcode/common/reedsolomon/BC_ReedSolomon.h"
+
+#include <memory>
+
+#include "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h"
+#include "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.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);
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> infoTemp(
+ info.MultiplyByMonomial(ecBytes, 1, e));
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ std::unique_ptr<CFX_PtrArray> temp(infoTemp->Divide(generator, e));
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ 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/fxbarcode/common/reedsolomon/BC_ReedSolomon.h b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.h
new file mode 100644
index 0000000000..6f6aef7e7d
--- /dev/null
+++ b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.h
@@ -0,0 +1,29 @@
+// 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 XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMON_H_
+#define XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMON_H_
+
+#include "core/include/fxcrt/fx_basic.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 // XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMON_H_
diff --git a/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.cpp b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.cpp
new file mode 100644
index 0000000000..ff91c9ddc3
--- /dev/null
+++ b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.cpp
@@ -0,0 +1,221 @@
+// 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/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.h"
+
+#include <memory>
+#include <utility>
+
+#include "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h"
+#include "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.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);
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> temp(
+ m_field->BuildMonomial(twoS, 1, e));
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ std::unique_ptr<CFX_PtrArray> sigmaOmega(
+ RunEuclideanAlgorithm(temp.get(), &syndrome, twoS, e));
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> sigma(
+ (CBC_ReedSolomonGF256Poly*)(*sigmaOmega)[0]);
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> omega(
+ (CBC_ReedSolomonGF256Poly*)(*sigmaOmega)[1]);
+ std::unique_ptr<CFX_Int32Array> errorLocations(
+ FindErrorLocations(sigma.get(), e));
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ std::unique_ptr<CFX_Int32Array> errorMagnitudes(
+ FindErrorMagnitudes(omega.get(), errorLocations.get(), dataMatrix, e));
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ 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;
+ }
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> rLast(a->Clone(e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> r(b->Clone(e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> sLast(m_field->GetOne()->Clone(e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> s(m_field->GetZero()->Clone(e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> tLast(m_field->GetZero()->Clone(e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> t(m_field->GetOne()->Clone(e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ while (r->GetDegree() >= R / 2) {
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> rLastLast = std::move(rLast);
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> sLastLast = std::move(sLast);
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> tLastlast = std::move(tLast);
+ rLast = std::move(r);
+ sLast = std::move(s);
+ tLast = std::move(t);
+ if (rLast->IsZero()) {
+ e = BCExceptionR_I_1IsZero;
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ }
+ r.reset(rLastLast->Clone(e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> q(m_field->GetZero()->Clone(e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ 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);
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> build(
+ m_field->BuildMonomial(degreeDiff, scale, e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ q.reset(q->AddOrSubtract(build.get(), e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> multiply(
+ rLast->MultiplyByMonomial(degreeDiff, scale, e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ r.reset(r->AddOrSubtract(multiply.get(), e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ }
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> temp1(
+ q->Multiply(sLast.get(), e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ s.reset(temp1->AddOrSubtract(sLastLast.get(), e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> temp5(
+ q->Multiply(tLast.get(), e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ t.reset(temp5->AddOrSubtract(tLastlast.get(), e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ }
+ 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);
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> sigma(t->Multiply(inverse, e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> omega(r->Multiply(inverse, e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ 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) {
+ std::unique_ptr<CFX_Int32Array> temp(new CFX_Int32Array);
+ temp->Add(errorLocator->GetCoefficients(1));
+ return temp.release();
+ }
+ CFX_Int32Array* tempT = new CFX_Int32Array;
+ tempT->SetSize(numErrors);
+ std::unique_ptr<CFX_Int32Array> 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);
+ std::unique_ptr<CFX_Int32Array> 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/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.h b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.h
new file mode 100644
index 0000000000..ec14344fe0
--- /dev/null
+++ b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.h
@@ -0,0 +1,35 @@
+// 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 XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONDECODER_H_
+#define XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONDECODER_H_
+
+#include "core/include/fxcrt/fx_basic.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 // XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONDECODER_H_
diff --git a/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp
new file mode 100644
index 0000000000..5e9fd33ac4
--- /dev/null
+++ b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp
@@ -0,0 +1,124 @@
+// 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/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h"
+#include "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.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() {
+ delete m_zero;
+ delete m_one;
+}
+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/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h
new file mode 100644
index 0000000000..099cab57d5
--- /dev/null
+++ b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h
@@ -0,0 +1,41 @@
+// 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 XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256_H_
+#define XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256_H_
+
+#include "core/include/fxcrt/fx_basic.h"
+#include "xfa/fxbarcode/utils.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 // XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256_H_
diff --git a/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp
new file mode 100644
index 0000000000..ee22390df6
--- /dev/null
+++ b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp
@@ -0,0 +1,254 @@
+// 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/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h"
+
+#include <memory>
+
+#include "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.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 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 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);
+ }
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> quotient(
+ m_field->GetZero()->Clone(e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> remainder(Clone(e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ 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);
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> term(
+ other->MultiplyByMonomial(degreeDifference, scale, e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ std::unique_ptr<CBC_ReedSolomonGF256Poly> iteratorQuotient(
+ m_field->BuildMonomial(degreeDifference, scale, e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ quotient.reset(quotient->AddOrSubtract(iteratorQuotient.get(), e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ remainder.reset(remainder->AddOrSubtract(term.get(), e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ }
+ 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/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h
new file mode 100644
index 0000000000..16a1f9066e
--- /dev/null
+++ b/xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h
@@ -0,0 +1,43 @@
+// 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 XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_
+#define XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_
+
+#include "core/include/fxcrt/fx_basic.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 // XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_