// 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 FX_INT32 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() | |
{ | |
FX_INT32 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, FX_INT32 dimension) | |
{ | |
for(FX_INT32 i = 0; i < dimension; i++) { | |
for(FX_INT32 j = 0; j < dimension; j++) { | |
if(IsMasked(i, j)) { | |
bits->Flip(j, i); | |
} | |
} | |
} | |
} | |
CBC_QRDataMask* CBC_QRDataMask::ForReference(FX_INT32 reference, FX_INT32 &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(FX_INT32 x, FX_INT32 y) | |
{ | |
return ((x + y) % 2) == 0; | |
} | |
}; | |
class DataMask001 : public CBC_QRDataMask | |
{ | |
public: | |
FX_BOOL IsMasked(FX_INT32 x, FX_INT32 y) | |
{ | |
return (x % 2) == 0; | |
} | |
}; | |
class DataMask010 : public CBC_QRDataMask | |
{ | |
public: | |
FX_BOOL IsMasked(FX_INT32 x, FX_INT32 y) | |
{ | |
return y % 3 == 0; | |
} | |
}; | |
class DataMask011 : public CBC_QRDataMask | |
{ | |
public: | |
FX_BOOL IsMasked(FX_INT32 x, FX_INT32 y) | |
{ | |
return (x + y) % 3 == 0; | |
} | |
}; | |
class DataMask100 : public CBC_QRDataMask | |
{ | |
public: | |
FX_BOOL IsMasked(FX_INT32 x, FX_INT32 y) | |
{ | |
return (((x >> 1) + (y / 3)) % 2) == 0; | |
} | |
}; | |
class DataMask101 : public CBC_QRDataMask | |
{ | |
public: | |
FX_BOOL IsMasked(FX_INT32 x, FX_INT32 y) | |
{ | |
size_t temp = x * y; | |
return (temp % 2) + (temp % 3) == 0; | |
} | |
}; | |
class DataMask110 : public CBC_QRDataMask | |
{ | |
public: | |
FX_BOOL IsMasked(FX_INT32 x, FX_INT32 y) | |
{ | |
size_t temp = x * y; | |
return (((temp % 2) + (temp % 3)) % 2) == 0; | |
} | |
}; | |
class DataMask111 : public CBC_QRDataMask | |
{ | |
public: | |
FX_BOOL IsMasked(FX_INT32 x, FX_INT32 y) | |
{ | |
return ((((x + y) % 2) + ((x * y) % 3)) % 2) == 0; | |
} | |
}; | |
FX_INT32 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() | |
{ | |
} |