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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 "xfa/fxbarcode/qrcode/BC_QRDataBlock.h"
#include <memory>
#include "xfa/fxbarcode/qrcode/BC_QRCoderECB.h"
#include "xfa/fxbarcode/qrcode/BC_QRCoderECBlocks.h"
#include "xfa/fxbarcode/qrcode/BC_QRCoderVersion.h"
#include "xfa/fxbarcode/utils.h"
CBC_QRDataBlock::CBC_QRDataBlock(int32_t numDataCodewords,
CFX_ByteArray* codewords)
: m_numDataCodewords(numDataCodewords), m_codewords(codewords) {}
CBC_QRDataBlock::~CBC_QRDataBlock() {
delete m_codewords;
}
int32_t CBC_QRDataBlock::GetNumDataCodewords() {
return m_numDataCodewords;
}
CFX_ByteArray* CBC_QRDataBlock::GetCodewords() {
return m_codewords;
}
CFX_ArrayTemplate<CBC_QRDataBlock*>* CBC_QRDataBlock::GetDataBlocks(
CFX_ByteArray* rawCodewords,
CBC_QRCoderVersion* version,
CBC_QRCoderErrorCorrectionLevel* ecLevel,
int32_t& e) {
if (rawCodewords->GetSize() != version->GetTotalCodeWords()) {
e = BCExceptionIllegalArgument;
BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
}
CBC_QRCoderECBlocks* ecBlocks = version->GetECBlocksForLevel(ecLevel);
int32_t totalBlocks = 0;
CFX_ArrayTemplate<CBC_QRCoderECB*>* ecBlockArray = ecBlocks->GetECBlocks();
int32_t i = 0;
for (i = 0; i < ecBlockArray->GetSize(); i++) {
totalBlocks += (*ecBlockArray)[i]->GetCount();
}
std::unique_ptr<CFX_ArrayTemplate<CBC_QRDataBlock*>> result(
new CFX_ArrayTemplate<CBC_QRDataBlock*>());
result->SetSize(totalBlocks);
int32_t numResultBlocks = 0;
for (int32_t j = 0; j < ecBlockArray->GetSize(); j++) {
CBC_QRCoderECB* ecBlock = (*ecBlockArray)[j];
for (int32_t k = 0; k < ecBlock->GetCount(); k++) {
int32_t numDataCodewords = ecBlock->GetDataCodeWords();
int32_t numBlockCodewords =
ecBlocks->GetECCodeWordsPerBlock() + numDataCodewords;
CFX_ByteArray* bytearray = new CFX_ByteArray();
bytearray->SetSize(numBlockCodewords);
(*result)[numResultBlocks++] =
new CBC_QRDataBlock(numDataCodewords, bytearray);
}
}
int32_t shorterBlocksTotalCodewords = (*result)[0]->m_codewords->GetSize();
int32_t longerBlocksStartAt = result->GetSize() - 1;
while (longerBlocksStartAt >= 0) {
int32_t numCodewords =
(*result)[longerBlocksStartAt]->m_codewords->GetSize();
if (numCodewords == shorterBlocksTotalCodewords) {
break;
}
longerBlocksStartAt--;
}
longerBlocksStartAt++;
int32_t shorterBlocksNumDataCodewords =
shorterBlocksTotalCodewords - ecBlocks->GetECCodeWordsPerBlock();
int32_t rawCodewordsOffset = 0;
int32_t x = 0;
for (int32_t k = 0; k < shorterBlocksNumDataCodewords; k++) {
for (x = 0; x < numResultBlocks; x++) {
(*((*result)[x]->m_codewords))[k] = (*rawCodewords)[rawCodewordsOffset++];
}
}
for (x = longerBlocksStartAt; x < numResultBlocks; x++) {
(*((*result)[x]->m_codewords))[shorterBlocksNumDataCodewords] =
(*rawCodewords)[rawCodewordsOffset++];
}
int32_t max = (*result)[0]->m_codewords->GetSize();
for (i = shorterBlocksNumDataCodewords; i < max; i++) {
for (int32_t y = 0; y < numResultBlocks; y++) {
int32_t iOffset = y < longerBlocksStartAt ? i : i + 1;
(*((*result)[y]->m_codewords))[iOffset] =
(*rawCodewords)[rawCodewordsOffset++];
}
}
return result.release();
}
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