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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_QRDataMask.h"
static int32_t N_DATA_MASKS = 0;
CFX_PtrArray* CBC_QRDataMask::DATA_MASKS = NULL;
void CBC_QRDataMask::Initialize()
{
DATA_MASKS = FX_NEW CFX_PtrArray();
N_DATA_MASKS = BuildDataMasks();
}
void CBC_QRDataMask::Finalize()
{
Destroy();
delete DATA_MASKS;
}
void CBC_QRDataMask::Destroy()
{
int32_t i;
for(i = 0; i < N_DATA_MASKS; i++) {
CBC_QRDataMask* p = (CBC_QRDataMask*)(*DATA_MASKS)[i];
if (p) {
delete p;
}
}
}
void CBC_QRDataMask::UnmaskBitMatirx(CBC_CommonBitMatrix *bits, int32_t dimension)
{
for(int32_t i = 0; i < dimension; i++) {
for(int32_t j = 0; j < dimension; j++) {
if(IsMasked(i, j)) {
bits->Flip(j, i);
}
}
}
}
CBC_QRDataMask* CBC_QRDataMask::ForReference(int32_t reference, int32_t &e)
{
if(reference < 0 || reference > 7) {
e = BCExceptionReferenceMustBeBetween0And7;
BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
}
return (CBC_QRDataMask*)(*DATA_MASKS)[reference];
}
class DataMask000 : public CBC_QRDataMask
{
public:
FX_BOOL IsMasked(int32_t x, int32_t y)
{
return ((x + y) % 2) == 0;
}
};
class DataMask001 : public CBC_QRDataMask
{
public:
FX_BOOL IsMasked(int32_t x, int32_t y)
{
return (x % 2) == 0;
}
};
class DataMask010 : public CBC_QRDataMask
{
public:
FX_BOOL IsMasked(int32_t x, int32_t y)
{
return y % 3 == 0;
}
};
class DataMask011 : public CBC_QRDataMask
{
public:
FX_BOOL IsMasked(int32_t x, int32_t y)
{
return (x + y) % 3 == 0;
}
};
class DataMask100 : public CBC_QRDataMask
{
public:
FX_BOOL IsMasked(int32_t x, int32_t y)
{
return (((x >> 1) + (y / 3)) % 2) == 0;
}
};
class DataMask101 : public CBC_QRDataMask
{
public:
FX_BOOL IsMasked(int32_t x, int32_t y)
{
size_t temp = x * y;
return (temp % 2) + (temp % 3) == 0;
}
};
class DataMask110 : public CBC_QRDataMask
{
public:
FX_BOOL IsMasked(int32_t x, int32_t y)
{
size_t temp = x * y;
return (((temp % 2) + (temp % 3)) % 2) == 0;
}
};
class DataMask111 : public CBC_QRDataMask
{
public:
FX_BOOL IsMasked(int32_t x, int32_t y)
{
return ((((x + y) % 2) + ((x * y) % 3)) % 2) == 0;
}
};
int32_t CBC_QRDataMask::BuildDataMasks()
{
DATA_MASKS->Add(FX_NEW DataMask000);
DATA_MASKS->Add(FX_NEW DataMask001);
DATA_MASKS->Add(FX_NEW DataMask010);
DATA_MASKS->Add(FX_NEW DataMask011);
DATA_MASKS->Add(FX_NEW DataMask100);
DATA_MASKS->Add(FX_NEW DataMask101);
DATA_MASKS->Add(FX_NEW DataMask110);
DATA_MASKS->Add(FX_NEW DataMask111);
return DATA_MASKS->GetSize();
}
CBC_QRDataMask::CBC_QRDataMask()
{
}
CBC_QRDataMask::~CBC_QRDataMask()
{
}
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