diff options
Diffstat (limited to 'xfa/src/fxbarcode/common/reedsolomon')
8 files changed, 838 insertions, 0 deletions
diff --git a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp new file mode 100644 index 0000000000..1fc8b6685a --- /dev/null +++ b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp @@ -0,0 +1,100 @@ +// 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 "../../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(FX_NEW CBC_ReedSolomonGF256Poly(m_field, 1));
+}
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonEncoder::BuildGenerator(FX_INT32 degree, FX_INT32 &e)
+{
+ if(degree >= m_cachedGenerators.GetSize()) {
+ CBC_ReedSolomonGF256Poly* lastGenerator = (CBC_ReedSolomonGF256Poly*)(m_cachedGenerators[m_cachedGenerators.GetSize() - 1]);
+ for(FX_INT32 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, FX_INT32 ecBytes, FX_INT32 &e)
+{
+ if(ecBytes == 0) {
+ e = BCExceptionNoCorrectionBytes;
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ }
+ FX_INT32 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(FX_INT32 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<CBC_ReedSolomonGF256Poly> infoTemp(rsg);
+ CFX_PtrArray *pa = infoTemp->Divide(generator, e);
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ CBC_AutoPtr<CFX_PtrArray > temp(pa);
+ CBC_ReedSolomonGF256Poly* remainder = (CBC_ReedSolomonGF256Poly*)(temp->operator [](1));
+ CFX_Int32Array* coefficients = remainder->GetCoefficients();
+ FX_INT32 numZeroCoefficients = ecBytes - coefficients->GetSize();
+ for(FX_INT32 i = 0; i < numZeroCoefficients; i++) {
+ (*toEncode)[dataBytes + i] = 0;
+ }
+ for(FX_INT32 y = 0; y < coefficients->GetSize(); y++) {
+ (*toEncode)[dataBytes + numZeroCoefficients + y] =
+ coefficients->operator [](y);
+ }
+ for (FX_INT32 k = 0; k < temp->GetSize(); k++) {
+ delete (CBC_ReedSolomonGF256Poly*)(*temp)[k];
+ }
+}
+CBC_ReedSolomonEncoder::~CBC_ReedSolomonEncoder()
+{
+ for (FX_INT32 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 new file mode 100644 index 0000000000..2950b8f315 --- /dev/null +++ b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomon.h @@ -0,0 +1,25 @@ +// 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;
+class CBC_ReedSolomonEncoder : public CFX_Object
+{
+private:
+ CBC_ReedSolomonGF256* m_field;
+ CFX_PtrArray m_cachedGenerators;
+ CBC_ReedSolomonGF256Poly* BuildGenerator(FX_INT32 degree, FX_INT32 &e);
+public:
+ CBC_ReedSolomonEncoder(CBC_ReedSolomonGF256 * field);
+ virtual ~CBC_ReedSolomonEncoder();
+
+ void Encode(CFX_Int32Array *toEncode, FX_INT32 ecBytes, FX_INT32 &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 new file mode 100644 index 0000000000..3cb5e7762f --- /dev/null +++ b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.cpp @@ -0,0 +1,224 @@ +// 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 "../../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, FX_INT32 twoS, FX_INT32 &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 (FX_INT32 i = 0; i < twoS; i++) {
+ FX_INT32 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<CBC_ReedSolomonGF256Poly> temp(rsg);
+ CFX_PtrArray* pa = RunEuclideanAlgorithm(temp.get(), &syndrome, twoS, e);
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ CBC_AutoPtr<CFX_PtrArray > sigmaOmega(pa);
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> sigma((CBC_ReedSolomonGF256Poly*)(*sigmaOmega)[0]);
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> omega((CBC_ReedSolomonGF256Poly*)(*sigmaOmega)[1]);
+ CFX_Int32Array* ia1 = FindErrorLocations(sigma.get(), e);
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ CBC_AutoPtr<CFX_Int32Array > errorLocations(ia1);
+ CFX_Int32Array* ia2 = FindErrorMagnitudes(omega.get(), errorLocations.get(), dataMatrix, e);
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ CBC_AutoPtr<CFX_Int32Array > errorMagnitudes(ia2);
+ for (FX_INT32 k = 0; k < errorLocations->GetSize(); k++) {
+ FX_INT32 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, FX_INT32 R, FX_INT32 &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<CBC_ReedSolomonGF256Poly> rLast(rsg1);
+ CBC_ReedSolomonGF256Poly* rsg2 = b->Clone(e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> r(rsg2);
+ CBC_ReedSolomonGF256Poly* rsg3 = m_field->GetOne()->Clone(e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> sLast(rsg3);
+ CBC_ReedSolomonGF256Poly* rsg4 = m_field->GetZero()->Clone(e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> s(rsg4);
+ CBC_ReedSolomonGF256Poly* rsg5 = m_field->GetZero()->Clone(e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> tLast(rsg5);
+ CBC_ReedSolomonGF256Poly* rsg6 = m_field->GetOne()->Clone(e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> t(rsg6);
+ while (r->GetDegree() >= R / 2) {
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> rLastLast = rLast;
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> sLastLast = sLast;
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> 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<CBC_ReedSolomonGF256Poly> rTemp(rsg7);
+ r = rTemp;
+ CBC_ReedSolomonGF256Poly* rsg8 = m_field->GetZero()->Clone(e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> q(rsg8);
+ FX_INT32 denominatorLeadingTerm = rLast->GetCoefficients(rLast->GetDegree());
+ FX_INT32 dltInverse = m_field->Inverse(denominatorLeadingTerm, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ while (r->GetDegree() >= rLast->GetDegree() && !(r->IsZero())) {
+ FX_INT32 degreeDiff = r->GetDegree() - rLast->GetDegree();
+ FX_INT32 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<CBC_ReedSolomonGF256Poly> build(rsgp1);
+ CBC_ReedSolomonGF256Poly* rsgp2 = q->AddOrSubtract(build.get(), e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> temp(rsgp2);
+ q = temp;
+ CBC_ReedSolomonGF256Poly* rsgp3 = rLast->MultiplyByMonomial(degreeDiff, scale, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> multiply(rsgp3);
+ CBC_ReedSolomonGF256Poly* rsgp4 = r->AddOrSubtract(multiply.get(), e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> temp3(rsgp4);
+ r = temp3;
+ }
+ CBC_ReedSolomonGF256Poly* rsg9 = q->Multiply(sLast.get(), e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> temp1(rsg9);
+ CBC_ReedSolomonGF256Poly* rsg10 = temp1->AddOrSubtract(sLastLast.get(), e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> temp2(rsg10);
+ s = temp2;
+ CBC_ReedSolomonGF256Poly* rsg11 = q->Multiply(tLast.get(), e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> temp5(rsg11);
+ CBC_ReedSolomonGF256Poly* rsg12 = temp5->AddOrSubtract(tLastlast.get(), e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> temp6(rsg12);
+ t = temp6;
+ }
+ FX_INT32 sigmaTildeAtZero = t->GetCoefficients(0);
+ if (sigmaTildeAtZero == 0) {
+ e = BCExceptionIsZero;
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ }
+ FX_INT32 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<CBC_ReedSolomonGF256Poly> sigma(rsg13);
+ CBC_ReedSolomonGF256Poly* rsg14 = r->Multiply(inverse, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> omega(rsg14);
+ CFX_PtrArray *temp = FX_NEW CFX_PtrArray;
+ temp->Add(sigma.release());
+ temp->Add(omega.release());
+ return temp;
+}
+CFX_Int32Array *CBC_ReedSolomonDecoder::FindErrorLocations(CBC_ReedSolomonGF256Poly* errorLocator, FX_INT32 &e)
+{
+ FX_INT32 numErrors = errorLocator->GetDegree();
+ if (numErrors == 1) {
+ CBC_AutoPtr<CFX_Int32Array > temp(FX_NEW CFX_Int32Array);
+ temp->Add(errorLocator->GetCoefficients(1));
+ return temp.release();
+ }
+ CFX_Int32Array *tempT = FX_NEW CFX_Int32Array;
+ tempT->SetSize(numErrors);
+ CBC_AutoPtr<CFX_Int32Array > result(tempT);
+ FX_INT32 ie = 0;
+ for (FX_INT32 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, FX_INT32 &e)
+{
+ FX_INT32 s = errorLocations->GetSize();
+ CFX_Int32Array * temp = FX_NEW CFX_Int32Array;
+ temp->SetSize(s);
+ CBC_AutoPtr<CFX_Int32Array > result(temp);
+ for (FX_INT32 i = 0; i < s; i++) {
+ FX_INT32 xiInverse = m_field->Inverse(errorLocations->operator [](i), e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ FX_INT32 denominator = 1;
+ for(FX_INT32 j = 0; j < s; j++) {
+ if(i != j) {
+ denominator = m_field->Multiply(denominator,
+ CBC_ReedSolomonGF256::AddOrSubtract(1, m_field->Multiply(errorLocations->operator [](j), xiInverse)));
+ }
+ }
+ FX_INT32 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 new file mode 100644 index 0000000000..c1dd0f03f5 --- /dev/null +++ b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.h @@ -0,0 +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_REEDSOLOMONDECODER_H_
+#define _BC_REEDSOLOMONDECODER_H_
+class CBC_ReedSolomonGF256;
+class CBC_ReedSolomonGF256Poly;
+class CBC_ReedSolomonDecoder;
+class CBC_ReedSolomonDecoder : public CFX_Object
+{
+private:
+ CBC_ReedSolomonGF256 * m_field;
+public:
+ CBC_ReedSolomonDecoder(CBC_ReedSolomonGF256 * field);
+ virtual ~CBC_ReedSolomonDecoder();
+ void Decode(CFX_Int32Array* received, FX_INT32 twoS, FX_INT32 &e);
+ CFX_PtrArray* RunEuclideanAlgorithm(CBC_ReedSolomonGF256Poly* a, CBC_ReedSolomonGF256Poly* b, FX_INT32 R, FX_INT32 &e);
+ CFX_Int32Array* FindErrorLocations(CBC_ReedSolomonGF256Poly* errorLocator, FX_INT32 &e);
+ CFX_Int32Array* FindErrorMagnitudes(CBC_ReedSolomonGF256Poly* errorEvaluator, CFX_Int32Array* errorLocations, FX_BOOL dataMatrix, FX_INT32 &e);
+};
+#endif
diff --git a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp new file mode 100644 index 0000000000..bb045ac24c --- /dev/null +++ b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp @@ -0,0 +1,140 @@ +// 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 "../../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 = FX_NEW CBC_ReedSolomonGF256(0x011D);
+ QRCodeFild->Init();
+ DataMatrixField = FX_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(FX_INT32 primitive)
+{
+ FX_INT32 x = 1;
+ for(FX_INT32 j = 0; j < 256; j++) {
+ m_expTable[j] = x;
+ x <<= 1;
+ if(x >= 0x100) {
+ x ^= primitive;
+ }
+ }
+ for(FX_INT32 i = 0; i < 255; i++) {
+ m_logTable[m_expTable[i]] = i;
+ }
+ m_logTable[0] = 0;
+}
+void CBC_ReedSolomonGF256::Init()
+{
+ m_zero = FX_NEW CBC_ReedSolomonGF256Poly(this, 0);
+ m_one = FX_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(FX_INT32 degree, FX_INT32 coefficient, FX_INT32 &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 = FX_NEW CBC_ReedSolomonGF256Poly();
+ temp->Init(this, &coefficients, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ return temp;
+}
+FX_INT32 CBC_ReedSolomonGF256::AddOrSubtract(FX_INT32 a, FX_INT32 b)
+{
+ return a ^ b;
+}
+FX_INT32 CBC_ReedSolomonGF256::Exp(FX_INT32 a)
+{
+ return m_expTable[a];
+}
+FX_INT32 CBC_ReedSolomonGF256::Log(FX_INT32 a, FX_INT32 &e)
+{
+ if(a == 0) {
+ e = BCExceptionAIsZero;
+ BC_EXCEPTION_CHECK_ReturnValue(e, 0);
+ }
+ return m_logTable[a];
+}
+FX_INT32 CBC_ReedSolomonGF256::Inverse(FX_INT32 a, FX_INT32 &e)
+{
+ if(a == 0) {
+ e = BCExceptionAIsZero;
+ BC_EXCEPTION_CHECK_ReturnValue(e, 0);
+ }
+ return m_expTable[255 - m_logTable[a]];
+}
+FX_INT32 CBC_ReedSolomonGF256::Multiply(FX_INT32 a, FX_INT32 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 new file mode 100644 index 0000000000..1687b95e09 --- /dev/null +++ b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.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 _BC_REEDSOLOMONGF256_H_
+#define _BC_REEDSOLOMONGF256_H_
+class CBC_ReedSolomonGF256Poly;
+class CBC_ReedSolomonGF256;
+class CBC_ReedSolomonGF256 : public CFX_Object
+{
+public:
+ static void Initialize();
+ static void Finalize();
+ static CBC_ReedSolomonGF256 *QRCodeFild;
+ static CBC_ReedSolomonGF256 *DataMatrixField;
+ CBC_ReedSolomonGF256(FX_INT32 primitive);
+ virtual ~CBC_ReedSolomonGF256();
+ CBC_ReedSolomonGF256Poly* GetZero();
+ CBC_ReedSolomonGF256Poly* GetOne();
+ CBC_ReedSolomonGF256Poly* BuildMonomial(FX_INT32 degree, FX_INT32 coefficient, FX_INT32 &e);
+ static FX_INT32 AddOrSubtract(FX_INT32 a, FX_INT32 b);
+ FX_INT32 Exp(FX_INT32 a);
+ FX_INT32 Log(FX_INT32 a, FX_INT32 &e);
+ FX_INT32 Inverse(FX_INT32 a, FX_INT32 &e);
+ FX_INT32 Multiply(FX_INT32 a, FX_INT32 b);
+ virtual void Init();
+private:
+ FX_INT32 m_expTable[256];
+ FX_INT32 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 new file mode 100644 index 0000000000..6476e4cf80 --- /dev/null +++ b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp @@ -0,0 +1,257 @@ +// 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 "../../barcode.h"
+#include "BC_ReedSolomonGF256.h"
+#include "BC_ReedSolomonGF256Poly.h"
+CBC_ReedSolomonGF256Poly::CBC_ReedSolomonGF256Poly(CBC_ReedSolomonGF256* field, FX_INT32 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, FX_INT32 &e)
+{
+ if(coefficients == NULL || coefficients->GetSize() == 0) {
+ e = BCExceptionCoefficientsSizeIsNull;
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ }
+ m_field = field;
+ FX_INT32 coefficientsLength = coefficients->GetSize();
+ if((coefficientsLength > 1 && (*coefficients)[0] == 0)) {
+ FX_INT32 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(FX_INT32 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;
+}
+FX_INT32 CBC_ReedSolomonGF256Poly::GetDegree()
+{
+ return m_coefficients.GetSize() - 1;
+}
+FX_BOOL CBC_ReedSolomonGF256Poly::IsZero()
+{
+ return m_coefficients[0] == 0;
+}
+FX_INT32 CBC_ReedSolomonGF256Poly::GetCoefficients(FX_INT32 degree)
+{
+ return m_coefficients[m_coefficients.GetSize() - 1 - degree];
+}
+FX_INT32 CBC_ReedSolomonGF256Poly::EvaluateAt(FX_INT32 a)
+{
+ if(a == 0) {
+ return GetCoefficients(0);
+ }
+ FX_INT32 size = m_coefficients.GetSize();
+ if(a == 1) {
+ FX_INT32 result = 0;
+ for(FX_INT32 i = 0; i < size; i++) {
+ result = CBC_ReedSolomonGF256::AddOrSubtract(result, m_coefficients[i]);
+ }
+ return result;
+ }
+ FX_INT32 result = m_coefficients[0];
+ for(FX_INT32 j = 1; j < size; j++) {
+ result = CBC_ReedSolomonGF256::AddOrSubtract(
+ m_field->Multiply(a, result),
+ m_coefficients[j]);
+ }
+ return result;
+}
+CBC_ReedSolomonGF256Poly *CBC_ReedSolomonGF256Poly::Clone(FX_INT32 &e)
+{
+ CBC_ReedSolomonGF256Poly *temp = FX_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, FX_INT32 &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() );
+ FX_INT32 lengthDiff = largerCoefficients.GetSize() - smallerCoefficients.GetSize();
+ for(FX_INT32 i = 0; i < lengthDiff; i++) {
+ sumDiff[i] = largerCoefficients[i];
+ }
+ for(FX_INT32 j = lengthDiff; j < largerCoefficients.GetSize(); j++) {
+ sumDiff[j] = (CBC_ReedSolomonGF256::AddOrSubtract(smallerCoefficients[j - lengthDiff],
+ largerCoefficients[j]));
+ }
+ CBC_ReedSolomonGF256Poly *temp = FX_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, FX_INT32 &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);
+ FX_INT32 aLength = m_coefficients.GetSize();
+ CFX_Int32Array bCoefficients;
+ bCoefficients.Copy(*(other->GetCoefficients()));
+ FX_INT32 bLength = other->GetCoefficients()->GetSize();
+ CFX_Int32Array product;
+ product.SetSize(aLength + bLength - 1);
+ for(FX_INT32 i = 0; i < aLength; i++) {
+ FX_INT32 aCoeff = m_coefficients[i];
+ for(FX_INT32 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 = FX_NEW CBC_ReedSolomonGF256Poly();
+ temp->Init(m_field, &product, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ return temp;
+}
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::Multiply(FX_INT32 scalar, FX_INT32 &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);
+ }
+ FX_INT32 size = m_coefficients.GetSize();
+ CFX_Int32Array product;
+ product.SetSize(size);
+ for(FX_INT32 i = 0; i < size; i++) {
+ product[i] = m_field->Multiply(m_coefficients[i], scalar);
+ }
+ CBC_ReedSolomonGF256Poly *temp = FX_NEW CBC_ReedSolomonGF256Poly();
+ temp->Init(m_field, &product, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ return temp;
+}
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::MultiplyByMonomial(FX_INT32 degree, FX_INT32 coefficient, FX_INT32 &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;
+ }
+ FX_INT32 size = m_coefficients.GetSize();
+ CFX_Int32Array product;
+ product.SetSize(size + degree);
+ for(FX_INT32 i = 0; i < size; i++) {
+ product[i] = (m_field->Multiply(m_coefficients[i], coefficient));
+ }
+ CBC_ReedSolomonGF256Poly *temp = FX_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, FX_INT32 &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<CBC_ReedSolomonGF256Poly> quotient(rsg1);
+ CBC_ReedSolomonGF256Poly* rsg2 = this->Clone(e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> remainder(rsg2);
+ FX_INT32 denominatorLeadingTerm = other->GetCoefficients(other->GetDegree());
+ FX_INT32 inverseDenominatorLeadingTeam = m_field->Inverse(denominatorLeadingTerm, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ FX_BOOL bFirst = TRUE;
+ while(remainder->GetDegree() >= other->GetDegree() && !remainder->IsZero()) {
+ FX_INT32 degreeDifference = remainder->GetDegree() - other->GetDegree();
+ FX_INT32 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<CBC_ReedSolomonGF256Poly> term(rsg3);
+ CBC_ReedSolomonGF256Poly* rsg4 = m_field->BuildMonomial(degreeDifference, scale, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> iteratorQuotient(rsg4);
+ CBC_ReedSolomonGF256Poly* rsg5 = quotient->AddOrSubtract(iteratorQuotient.get(), e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> temp(rsg5);
+ quotient = temp;
+ CBC_ReedSolomonGF256Poly* rsg6 = remainder->AddOrSubtract(term.get(), e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> temp1(rsg6);
+ remainder = temp1;
+ }
+ CFX_PtrArray* tempPtrA = FX_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 new file mode 100644 index 0000000000..a6db24e231 --- /dev/null +++ b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h @@ -0,0 +1,33 @@ +// 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;
+class CBC_ReedSolomonGF256Poly : public CFX_Object
+{
+public:
+ CBC_ReedSolomonGF256Poly(CBC_ReedSolomonGF256* field, FX_INT32 coefficients);
+ CBC_ReedSolomonGF256Poly();
+ virtual ~CBC_ReedSolomonGF256Poly();
+ FX_INT32 GetCoefficients(FX_INT32 degree);
+ CFX_Int32Array* GetCoefficients();
+ FX_INT32 GetDegree();
+ FX_BOOL IsZero();
+ FX_INT32 EvaluateAt(FX_INT32 a);
+ CBC_ReedSolomonGF256Poly* AddOrSubtract(CBC_ReedSolomonGF256Poly* other, FX_INT32 &e);
+ CBC_ReedSolomonGF256Poly* Multiply(CBC_ReedSolomonGF256Poly* other, FX_INT32 &e);
+ CBC_ReedSolomonGF256Poly* Multiply(FX_INT32 scalar, FX_INT32 &e);
+ CBC_ReedSolomonGF256Poly* MultiplyByMonomial(FX_INT32 degree, FX_INT32 coefficient, FX_INT32 &e);
+ CFX_PtrArray* Divide(CBC_ReedSolomonGF256Poly *other, FX_INT32 &e);
+ CBC_ReedSolomonGF256Poly* Clone(FX_INT32 &e);
+ virtual void Init(CBC_ReedSolomonGF256* field, CFX_Int32Array* coefficients, FX_INT32 &e);
+private:
+ CBC_ReedSolomonGF256* m_field;
+ CFX_Int32Array m_coefficients;
+};
+#endif
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