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// 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 "../common/BC_CommonBitMatrix.h"
#include "BC_DataMatrixVersion.h"
#include "BC_DataMatrixBitMatrixParser.h"
CBC_DataMatrixBitMatrixParser::CBC_DataMatrixBitMatrixParser()
{
m_mappingBitMatrix = NULL;
m_version = NULL;
m_readMappingMatrix = NULL;
}
void CBC_DataMatrixBitMatrixParser::Init(CBC_CommonBitMatrix *bitMatrix, FX_INT32 &e)
{
FX_INT32 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 = FX_NEW CBC_CommonBitMatrix();
m_readMappingMatrix->Init(m_mappingBitMatrix->GetWidth(), m_mappingBitMatrix->GetHeight());
}
CBC_DataMatrixBitMatrixParser::~CBC_DataMatrixBitMatrixParser()
{
if(m_mappingBitMatrix != NULL) {
delete m_mappingBitMatrix;
}
m_mappingBitMatrix = NULL;
if(m_readMappingMatrix != NULL) {
delete m_readMappingMatrix;
}
m_readMappingMatrix = NULL;
}
CBC_DataMatrixVersion *CBC_DataMatrixBitMatrixParser::GetVersion()
{
return m_version;
}
CBC_DataMatrixVersion *CBC_DataMatrixBitMatrixParser::ReadVersion(CBC_CommonBitMatrix *bitMatrix, FX_INT32 &e)
{
FX_INT32 rows = bitMatrix->GetHeight();
FX_INT32 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(FX_INT32 &e)
{
CBC_AutoPtr<CFX_ByteArray> result(FX_NEW CFX_ByteArray());
result->SetSize(m_version->GetTotalCodewords());
FX_INT32 resultOffset = 0;
FX_INT32 row = 4;
FX_INT32 column = 0;
FX_INT32 numRows = m_mappingBitMatrix->GetHeight();
FX_INT32 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++] = (FX_BYTE) ReadCorner1(numRows, numColumns);
row -= 2;
column += 2;
corner1Read = TRUE;
} else if ((row == numRows - 2) && (column == 0) && ((numColumns & 0x03) != 0) && !corner2Read) {
(*result)[resultOffset++] = (FX_BYTE) ReadCorner2(numRows, numColumns);
row -= 2;
column += 2;
corner2Read = TRUE;
} else if ((row == numRows + 4) && (column == 2) && ((numColumns & 0x07) == 0) && !corner3Read) {
(*result)[resultOffset++] = (FX_BYTE) ReadCorner3(numRows, numColumns);
row -= 2;
column += 2;
corner3Read = TRUE;
} else if ((row == numRows - 2) && (column == 0) && ((numColumns & 0x07) == 4) && !corner4Read) {
(*result)[resultOffset++] = (FX_BYTE) 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++] = (FX_BYTE) 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++] = (FX_BYTE) 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(FX_INT32 row, FX_INT32 column, FX_INT32 numRows, FX_INT32 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);
}
FX_INT32 CBC_DataMatrixBitMatrixParser::ReadUtah(FX_INT32 row, FX_INT32 column, FX_INT32 numRows, FX_INT32 numColumns)
{
FX_INT32 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;
}
FX_INT32 CBC_DataMatrixBitMatrixParser::ReadCorner1(FX_INT32 numRows, FX_INT32 numColumns)
{
FX_INT32 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;
}
FX_INT32 CBC_DataMatrixBitMatrixParser::ReadCorner2(FX_INT32 numRows, FX_INT32 numColumns)
{
FX_INT32 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;
}
FX_INT32 CBC_DataMatrixBitMatrixParser::ReadCorner3(FX_INT32 numRows, FX_INT32 numColumns)
{
FX_INT32 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;
}
FX_INT32 CBC_DataMatrixBitMatrixParser::ReadCorner4(FX_INT32 numRows, FX_INT32 numColumns)
{
FX_INT32 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 , FX_INT32 &e)
{
FX_INT32 symbolSizeRows = m_version->GetSymbolSizeRows();
FX_INT32 symbolSizeColumns = m_version->GetSymbolSizeColumns();
if (bitMatrix->GetHeight() != symbolSizeRows) {
e = BCExceptionCanNotCallGetDimensionOnNonSquareMatrix;
return NULL;
}
FX_INT32 dataRegionSizeRows = m_version->GetDataRegionSizeRows();
FX_INT32 dataRegionSizeColumns = m_version->GetDataRegionSizeColumns();
FX_INT32 numDataRegionsRow = symbolSizeRows / dataRegionSizeRows;
FX_INT32 numDataRegionsColumn = symbolSizeColumns / dataRegionSizeColumns;
FX_INT32 sizeDataRegionRow = numDataRegionsRow * dataRegionSizeRows;
FX_INT32 sizeDataRegionColumn = numDataRegionsColumn * dataRegionSizeColumns;
CBC_CommonBitMatrix *bitMatrixWithoutAlignment = FX_NEW CBC_CommonBitMatrix();
bitMatrixWithoutAlignment->Init(sizeDataRegionColumn, sizeDataRegionRow);
FX_INT32 dataRegionRow;
for (dataRegionRow = 0; dataRegionRow < numDataRegionsRow; ++dataRegionRow) {
FX_INT32 dataRegionRowOffset = dataRegionRow * dataRegionSizeRows;
FX_INT32 dataRegionColumn;
for (dataRegionColumn = 0; dataRegionColumn < numDataRegionsColumn; ++dataRegionColumn) {
FX_INT32 dataRegionColumnOffset = dataRegionColumn * dataRegionSizeColumns;
FX_INT32 i;
for (i = 0; i < dataRegionSizeRows; ++i) {
FX_INT32 readRowOffset = dataRegionRow * (dataRegionSizeRows + 2) + 1 + i;
FX_INT32 writeRowOffset = dataRegionRowOffset + i;
FX_INT32 j;
for (j = 0; j < dataRegionSizeColumns; ++j) {
FX_INT32 readColumnOffset = dataRegionColumn * (dataRegionSizeColumns + 2) + 1 + j;
if (bitMatrix->Get(readColumnOffset, readRowOffset)) {
FX_INT32 writeColumnOffset = dataRegionColumnOffset + j;
bitMatrixWithoutAlignment->Set(writeColumnOffset, writeRowOffset);
}
}
}
}
}
return bitMatrixWithoutAlignment;
}