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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 "BC_QRCoderECBlocks.h"
#include "BC_QRCoderECB.h"
#include "BC_QRDataBlock.h"
#include "BC_QRCoderVersion.h"
CBC_QRDataBlock::CBC_QRDataBlock(FX_INT32 numDataCodewords, CFX_ByteArray *codewords)
: m_numDataCodewords(numDataCodewords)
, m_codewords(codewords)
{
}
CBC_QRDataBlock::~CBC_QRDataBlock()
{
if(m_codewords != NULL) {
delete m_codewords;
m_codewords = NULL;
}
}
FX_INT32 CBC_QRDataBlock::GetNumDataCodewords()
{
return m_numDataCodewords;
}
CFX_ByteArray *CBC_QRDataBlock::GetCodewords()
{
return m_codewords;
}
CFX_PtrArray *CBC_QRDataBlock::GetDataBlocks(CFX_ByteArray* rawCodewords, CBC_QRCoderVersion *version, CBC_QRCoderErrorCorrectionLevel* ecLevel, FX_INT32 &e)
{
if(rawCodewords->GetSize() != version->GetTotalCodeWords()) {
e = BCExceptionIllegalArgument;
BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
}
CBC_QRCoderECBlocks *ecBlocks = version->GetECBlocksForLevel(ecLevel);
FX_INT32 totalBlocks = 0;
CFX_PtrArray* ecBlockArray = ecBlocks->GetECBlocks();
FX_INT32 i = 0;
for(i = 0; i < ecBlockArray->GetSize(); i++) {
totalBlocks += ((CBC_QRCoderECB*)(*ecBlockArray)[i])->GetCount();
}
CFX_PtrArray *datablock = FX_NEW CFX_PtrArray();
datablock->SetSize(totalBlocks);
CBC_AutoPtr<CFX_PtrArray > result(datablock);
FX_INT32 numResultBlocks = 0;
for(FX_INT32 j = 0; j < ecBlockArray->GetSize(); j++) {
CBC_QRCoderECB *ecBlock = (CBC_QRCoderECB*)(*ecBlockArray)[j];
for(FX_INT32 k = 0; k < ecBlock->GetCount(); k++) {
FX_INT32 numDataCodewords = ecBlock->GetDataCodeWords();
FX_INT32 numBlockCodewords = ecBlocks->GetECCodeWordsPerBlock() + numDataCodewords;
CFX_ByteArray *bytearray = FX_NEW CFX_ByteArray();
bytearray->SetSize(numBlockCodewords);
(*result)[numResultBlocks++] = FX_NEW CBC_QRDataBlock(numDataCodewords, bytearray);
}
}
FX_INT32 shorterBlocksTotalCodewords = ((CBC_QRDataBlock*)(*result)[0])->m_codewords->GetSize();
FX_INT32 longerBlocksStartAt = result->GetSize() - 1;
while(longerBlocksStartAt >= 0) {
FX_INT32 numCodewords = ((CBC_QRDataBlock*)(*result)[longerBlocksStartAt])->m_codewords->GetSize();
if(numCodewords == shorterBlocksTotalCodewords) {
break;
}
longerBlocksStartAt--;
}
longerBlocksStartAt++;
FX_INT32 shorterBlocksNumDataCodewords = shorterBlocksTotalCodewords - ecBlocks->GetECCodeWordsPerBlock();
FX_INT32 rawCodewordsOffset = 0;
FX_INT32 x = 0;
for(FX_INT32 k = 0; k < shorterBlocksNumDataCodewords; k++) {
for(x = 0; x < numResultBlocks; x++) {
(*(((CBC_QRDataBlock*)(*result)[x])->m_codewords))[k] = (*rawCodewords)[rawCodewordsOffset++];
}
}
for(x = longerBlocksStartAt; x < numResultBlocks; x++) {
(*(((CBC_QRDataBlock*)(*result)[x])->m_codewords))[shorterBlocksNumDataCodewords] = (*rawCodewords)[rawCodewordsOffset++];
}
FX_INT32 max = ((CBC_QRDataBlock*)(*result)[0])->m_codewords->GetSize();
for(i = shorterBlocksNumDataCodewords; i < max; i++) {
for(FX_INT32 y = 0; y < numResultBlocks; y++) {
FX_INT32 iOffset = y < longerBlocksStartAt ? i : i + 1;
(*(((CBC_QRDataBlock*)(*result)[y])->m_codewords))[iOffset] = (*rawCodewords)[rawCodewordsOffset++];
}
}
return result.release();
}
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