| // 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 = nullptr; |
| m_version = nullptr; |
| m_readMappingMatrix = nullptr; |
| } |
| 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, nullptr); |
| 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 nullptr; |
| } |
| 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 nullptr; |
| } |
| 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; |
| } |
