// 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/datamatrix/BC_DataMatrixBitMatrixParser.h" #include <memory> #include "xfa/fxbarcode/common/BC_CommonBitMatrix.h" #include "xfa/fxbarcode/datamatrix/BC_DataMatrixVersion.h" #include "xfa/fxbarcode/utils.h" CBC_DataMatrixBitMatrixParser::CBC_DataMatrixBitMatrixParser() { m_mappingBitMatrix = NULL; m_version = NULL; m_readMappingMatrix = NULL; } void CBC_DataMatrixBitMatrixParser::Init(CBC_CommonBitMatrix* bitMatrix, int32_t& e) { int32_t dimension = bitMatrix->GetHeight(); if (dimension < 8 || dimension > 144 || (dimension & 0x01) != 0) { e = BCExceptionFormatException; return; } m_version = ReadVersion(bitMatrix, e); BC_EXCEPTION_CHECK_ReturnVoid(e); m_mappingBitMatrix = ExtractDataRegion(bitMatrix, e); BC_EXCEPTION_CHECK_ReturnVoid(e); m_readMappingMatrix = new CBC_CommonBitMatrix(); m_readMappingMatrix->Init(m_mappingBitMatrix->GetWidth(), m_mappingBitMatrix->GetHeight()); } CBC_DataMatrixBitMatrixParser::~CBC_DataMatrixBitMatrixParser() { delete m_mappingBitMatrix; delete m_readMappingMatrix; } CBC_DataMatrixVersion* CBC_DataMatrixBitMatrixParser::GetVersion() { return m_version; } CBC_DataMatrixVersion* CBC_DataMatrixBitMatrixParser::ReadVersion( CBC_CommonBitMatrix* bitMatrix, int32_t& e) { int32_t rows = bitMatrix->GetHeight(); int32_t columns = bitMatrix->GetWidth(); CBC_DataMatrixVersion* temp = CBC_DataMatrixVersion::GetVersionForDimensions(rows, columns, e); BC_EXCEPTION_CHECK_ReturnValue(e, NULL); return temp; } CFX_ByteArray* CBC_DataMatrixBitMatrixParser::ReadCodewords(int32_t& e) { std::unique_ptr<CFX_ByteArray> result(new CFX_ByteArray()); result->SetSize(m_version->GetTotalCodewords()); int32_t resultOffset = 0; int32_t row = 4; int32_t column = 0; int32_t numRows = m_mappingBitMatrix->GetHeight(); int32_t numColumns = m_mappingBitMatrix->GetWidth(); FX_BOOL corner1Read = FALSE; FX_BOOL corner2Read = FALSE; FX_BOOL corner3Read = FALSE; FX_BOOL corner4Read = FALSE; do { if ((row == numRows) && (column == 0) && !corner1Read) { (*result)[resultOffset++] = (uint8_t)ReadCorner1(numRows, numColumns); row -= 2; column += 2; corner1Read = TRUE; } else if ((row == numRows - 2) && (column == 0) && ((numColumns & 0x03) != 0) && !corner2Read) { (*result)[resultOffset++] = (uint8_t)ReadCorner2(numRows, numColumns); row -= 2; column += 2; corner2Read = TRUE; } else if ((row == numRows + 4) && (column == 2) && ((numColumns & 0x07) == 0) && !corner3Read) { (*result)[resultOffset++] = (uint8_t)ReadCorner3(numRows, numColumns); row -= 2; column += 2; corner3Read = TRUE; } else if ((row == numRows - 2) && (column == 0) && ((numColumns & 0x07) == 4) && !corner4Read) { (*result)[resultOffset++] = (uint8_t)ReadCorner4(numRows, numColumns); row -= 2; column += 2; corner4Read = TRUE; } else { do { if ((row < numRows) && (column >= 0) && !m_readMappingMatrix->Get(column, row)) { if (resultOffset < (*result).GetSize()) { (*result)[resultOffset++] = (uint8_t)ReadUtah(row, column, numRows, numColumns); } } row -= 2; column += 2; } while ((row >= 0) && (column < numColumns)); row += 1; column += 3; do { if ((row >= 0) && (column < numColumns) && !m_readMappingMatrix->Get(column, row)) { if (resultOffset < (*result).GetSize()) { (*result)[resultOffset++] = (uint8_t)ReadUtah(row, column, numRows, numColumns); } } row += 2; column -= 2; } while ((row < numRows) && (column >= 0)); row += 3; column += 1; } } while ((row < numRows) || (column < numColumns)); if (resultOffset != m_version->GetTotalCodewords()) { e = BCExceptionFormatException; return NULL; } return result.release(); } FX_BOOL CBC_DataMatrixBitMatrixParser::ReadModule(int32_t row, int32_t column, int32_t numRows, int32_t numColumns) { if (row < 0) { row += numRows; column += 4 - ((numRows + 4) & 0x07); } if (column < 0) { column += numColumns; row += 4 - ((numColumns + 4) & 0x07); } m_readMappingMatrix->Set(column, row); return m_mappingBitMatrix->Get(column, row); } int32_t CBC_DataMatrixBitMatrixParser::ReadUtah(int32_t row, int32_t column, int32_t numRows, int32_t numColumns) { int32_t currentByte = 0; if (ReadModule(row - 2, column - 2, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(row - 2, column - 1, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(row - 1, column - 2, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(row - 1, column - 1, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(row - 1, column, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(row, column - 2, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(row, column - 1, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(row, column, numRows, numColumns)) { currentByte |= 1; } return currentByte; } int32_t CBC_DataMatrixBitMatrixParser::ReadCorner1(int32_t numRows, int32_t numColumns) { int32_t currentByte = 0; if (ReadModule(numRows - 1, 0, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(numRows - 1, 1, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(numRows - 1, 2, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(0, numColumns - 2, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(0, numColumns - 1, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(1, numColumns - 1, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(2, numColumns - 1, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(3, numColumns - 1, numRows, numColumns)) { currentByte |= 1; } return currentByte; } int32_t CBC_DataMatrixBitMatrixParser::ReadCorner2(int32_t numRows, int32_t numColumns) { int32_t currentByte = 0; if (ReadModule(numRows - 3, 0, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(numRows - 2, 0, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(numRows - 1, 0, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(0, numColumns - 4, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(0, numColumns - 3, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(0, numColumns - 2, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(0, numColumns - 1, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(1, numColumns - 1, numRows, numColumns)) { currentByte |= 1; } return currentByte; } int32_t CBC_DataMatrixBitMatrixParser::ReadCorner3(int32_t numRows, int32_t numColumns) { int32_t currentByte = 0; if (ReadModule(numRows - 1, 0, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(numRows - 1, numColumns - 1, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(0, numColumns - 3, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(0, numColumns - 2, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(0, numColumns - 1, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(1, numColumns - 3, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(1, numColumns - 2, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(1, numColumns - 1, numRows, numColumns)) { currentByte |= 1; } return currentByte; } int32_t CBC_DataMatrixBitMatrixParser::ReadCorner4(int32_t numRows, int32_t numColumns) { int32_t currentByte = 0; if (ReadModule(numRows - 3, 0, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(numRows - 2, 0, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(numRows - 1, 0, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(0, numColumns - 2, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(0, numColumns - 1, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(1, numColumns - 1, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(2, numColumns - 1, numRows, numColumns)) { currentByte |= 1; } currentByte <<= 1; if (ReadModule(3, numColumns - 1, numRows, numColumns)) { currentByte |= 1; } return currentByte; } CBC_CommonBitMatrix* CBC_DataMatrixBitMatrixParser::ExtractDataRegion( CBC_CommonBitMatrix* bitMatrix, int32_t& e) { int32_t symbolSizeRows = m_version->GetSymbolSizeRows(); int32_t symbolSizeColumns = m_version->GetSymbolSizeColumns(); if (bitMatrix->GetHeight() != symbolSizeRows) { e = BCExceptionCanNotCallGetDimensionOnNonSquareMatrix; return NULL; } int32_t dataRegionSizeRows = m_version->GetDataRegionSizeRows(); int32_t dataRegionSizeColumns = m_version->GetDataRegionSizeColumns(); int32_t numDataRegionsRow = symbolSizeRows / dataRegionSizeRows; int32_t numDataRegionsColumn = symbolSizeColumns / dataRegionSizeColumns; int32_t sizeDataRegionRow = numDataRegionsRow * dataRegionSizeRows; int32_t sizeDataRegionColumn = numDataRegionsColumn * dataRegionSizeColumns; CBC_CommonBitMatrix* bitMatrixWithoutAlignment = new CBC_CommonBitMatrix(); bitMatrixWithoutAlignment->Init(sizeDataRegionColumn, sizeDataRegionRow); int32_t dataRegionRow; for (dataRegionRow = 0; dataRegionRow < numDataRegionsRow; ++dataRegionRow) { int32_t dataRegionRowOffset = dataRegionRow * dataRegionSizeRows; int32_t dataRegionColumn; for (dataRegionColumn = 0; dataRegionColumn < numDataRegionsColumn; ++dataRegionColumn) { int32_t dataRegionColumnOffset = dataRegionColumn * dataRegionSizeColumns; int32_t i; for (i = 0; i < dataRegionSizeRows; ++i) { int32_t readRowOffset = dataRegionRow * (dataRegionSizeRows + 2) + 1 + i; int32_t writeRowOffset = dataRegionRowOffset + i; int32_t j; for (j = 0; j < dataRegionSizeColumns; ++j) { int32_t readColumnOffset = dataRegionColumn * (dataRegionSizeColumns + 2) + 1 + j; if (bitMatrix->Get(readColumnOffset, readRowOffset)) { int32_t writeColumnOffset = dataRegionColumnOffset + j; bitMatrixWithoutAlignment->Set(writeColumnOffset, writeRowOffset); } } } } } return bitMatrixWithoutAlignment; }