// 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 "xfa/src/fxbarcode/common/BC_CommonBitMatrix.h" #include "xfa/src/fxbarcode/qrcode/BC_QRBitMatrixParser.h" #include "xfa/src/fxbarcode/qrcode/BC_QRCoderFormatInformation.h" #include "xfa/src/fxbarcode/qrcode/BC_QRCoderVersion.h" #include "xfa/src/fxbarcode/qrcode/BC_QRDataMask.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() { if (m_parsedFormatInfo != NULL) { delete m_parsedFormatInfo; m_parsedFormatInfo = NULL; } m_version = NULL; } CBC_QRCoderFormatInformation* CBC_QRBitMatrixParser::ReadFormatInformation( int32_t& e) { if (m_parsedFormatInfo != NULL) { 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 != NULL) { 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 != NULL) { return m_parsedFormatInfo; } e = BCExceptionRead; BC_EXCEPTION_CHECK_ReturnValue(e, NULL); return NULL; } CBC_QRCoderVersion* CBC_QRBitMatrixParser::ReadVersion(int32_t& e) { if (m_version != NULL) { 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 != NULL && 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 != NULL && 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); CBC_CommonBitMatrix* cbm = version->BuildFunctionPattern(e); BC_EXCEPTION_CHECK_ReturnValue(e, NULL); CBC_AutoPtr<CBC_CommonBitMatrix> functionPattern(cbm); FX_BOOL readingUp = TRUE; CFX_ByteArray* temp = new CFX_ByteArray; temp->SetSize(version->GetTotalCodeWords()); CBC_AutoPtr<CFX_ByteArray> result(temp); 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(); }