diff options
Diffstat (limited to 'xfa/fxbarcode/qrcode/BC_QRBitMatrixParser.cpp')
| -rw-r--r-- | xfa/fxbarcode/qrcode/BC_QRBitMatrixParser.cpp | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/xfa/fxbarcode/qrcode/BC_QRBitMatrixParser.cpp b/xfa/fxbarcode/qrcode/BC_QRBitMatrixParser.cpp new file mode 100644 index 0000000000..53803588b5 --- /dev/null +++ b/xfa/fxbarcode/qrcode/BC_QRBitMatrixParser.cpp @@ -0,0 +1,183 @@ +// 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/qrcode/BC_QRBitMatrixParser.h" + +#include <memory> + +#include "xfa/fxbarcode/common/BC_CommonBitMatrix.h" +#include "xfa/fxbarcode/qrcode/BC_QRCoderFormatInformation.h" +#include "xfa/fxbarcode/qrcode/BC_QRCoderVersion.h" +#include "xfa/fxbarcode/qrcode/BC_QRDataMask.h" +#include "xfa/fxbarcode/utils.h" + +CBC_QRBitMatrixParser::CBC_QRBitMatrixParser() {} +void CBC_QRBitMatrixParser::Init(CBC_CommonBitMatrix* bitMatrix, int32_t& e) { + m_dimension = bitMatrix->GetDimension(e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + m_tempBitMatrix = bitMatrix; + if (m_dimension < 21 || (m_dimension & 0x03) != 1) { + e = BCExceptionRead; + BC_EXCEPTION_CHECK_ReturnVoid(e); + } + m_bitMatrix = m_tempBitMatrix; + m_parsedFormatInfo = NULL; + m_version = NULL; +} +CBC_QRBitMatrixParser::~CBC_QRBitMatrixParser() { + delete m_parsedFormatInfo; +} +CBC_QRCoderFormatInformation* CBC_QRBitMatrixParser::ReadFormatInformation( + int32_t& e) { + if (m_parsedFormatInfo) { + return m_parsedFormatInfo; + } + int32_t formatInfoBits = 0; + int32_t j; + for (j = 0; j < 6; j++) { + formatInfoBits = CopyBit(8, j, formatInfoBits); + } + formatInfoBits = CopyBit(8, 7, formatInfoBits); + formatInfoBits = CopyBit(8, 8, formatInfoBits); + formatInfoBits = CopyBit(7, 8, formatInfoBits); + for (int32_t i = 5; i >= 0; i--) { + formatInfoBits = CopyBit(i, 8, formatInfoBits); + } + m_parsedFormatInfo = + CBC_QRCoderFormatInformation::DecodeFormatInformation(formatInfoBits); + if (m_parsedFormatInfo) { + return m_parsedFormatInfo; + } + int32_t dimension = m_bitMatrix->GetDimension(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + formatInfoBits = 0; + int32_t iMin = dimension - 8; + for (j = dimension - 1; j >= iMin; j--) { + formatInfoBits = CopyBit(j, 8, formatInfoBits); + } + for (int32_t k = dimension - 7; k < dimension; k++) { + formatInfoBits = CopyBit(8, k, formatInfoBits); + } + m_parsedFormatInfo = + CBC_QRCoderFormatInformation::DecodeFormatInformation(formatInfoBits); + if (m_parsedFormatInfo) { + return m_parsedFormatInfo; + } + e = BCExceptionRead; + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + return NULL; +} +CBC_QRCoderVersion* CBC_QRBitMatrixParser::ReadVersion(int32_t& e) { + if (m_version) { + return m_version; + } + int32_t dimension = m_bitMatrix->GetDimension(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + int32_t provisionVersion = (dimension - 17) >> 2; + if (provisionVersion <= 6) { + CBC_QRCoderVersion* qrv = + CBC_QRCoderVersion::GetVersionForNumber(provisionVersion, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + return qrv; + } + int32_t versionBits = 0; + for (int32_t i = 5; i >= 0; i--) { + int32_t jMin = dimension - 11; + for (int32_t j = dimension - 9; j >= jMin; j--) { + versionBits = CopyBit(i, j, versionBits); + } + } + m_version = CBC_QRCoderVersion::DecodeVersionInformation(versionBits, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + if (m_version && m_version->GetDimensionForVersion() == dimension) { + return m_version; + } + versionBits = 0; + for (int32_t j = 5; j >= 0; j--) { + int32_t iMin = dimension - 11; + for (int32_t i = dimension - 9; i >= iMin; i--) { + versionBits = CopyBit(i, j, versionBits); + } + } + m_version = CBC_QRCoderVersion::DecodeVersionInformation(versionBits, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + if (m_version && m_version->GetDimensionForVersion() == dimension) { + return m_version; + } + e = BCExceptionRead; + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + return NULL; +} +int32_t CBC_QRBitMatrixParser::CopyBit(int32_t i, + int32_t j, + int32_t versionBits) { + return m_bitMatrix->Get(j, i) ? (versionBits << 1) | 0x1 : versionBits << 1; +} +CFX_ByteArray* CBC_QRBitMatrixParser::ReadCodewords(int32_t& e) { + CBC_QRCoderFormatInformation* formatInfo = ReadFormatInformation(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL) CBC_QRCoderVersion* version = + ReadVersion(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + CBC_QRDataMask* dataMask = + CBC_QRDataMask::ForReference((int32_t)(formatInfo->GetDataMask()), e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + int32_t dimension = m_bitMatrix->GetDimension(e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + dataMask->UnmaskBitMatirx(m_bitMatrix, dimension); + std::unique_ptr<CBC_CommonBitMatrix> functionPattern( + version->BuildFunctionPattern(e)); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + FX_BOOL readingUp = TRUE; + std::unique_ptr<CFX_ByteArray> result(new CFX_ByteArray); + result->SetSize(version->GetTotalCodeWords()); + int32_t resultOffset = 0; + int32_t currentByte = 0; + int32_t bitsRead = 0; + for (int32_t j = dimension - 1; j > 0; j -= 2) { + if (j == 6) { + j--; + } + for (int32_t count = 0; count < dimension; count++) { + int32_t i = readingUp ? dimension - 1 - count : count; + for (int32_t col = 0; col < 2; col++) { + if (!functionPattern->Get(j - col, i)) { + bitsRead++; + currentByte <<= 1; + if (m_bitMatrix->Get(j - col, i)) { + currentByte |= 1; + } + if (bitsRead == 8) { + (*result)[resultOffset++] = (uint8_t)currentByte; + bitsRead = 0; + currentByte = 0; + } + } + } + } + readingUp ^= TRUE; + } + if (resultOffset != version->GetTotalCodeWords()) { + e = BCExceptionRead; + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } + return result.release(); +} |