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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_CommonBitArray.h"
#include "BC_CommonBitMatrix.h"
CBC_CommonBitMatrix::CBC_CommonBitMatrix()
{
m_width = 0;
m_height = 0;
m_rowSize = 0;
m_bits = NULL;
}
void CBC_CommonBitMatrix::Init(int32_t dimension)
{
m_width = dimension;
m_height = dimension;
int32_t rowSize = (m_height + 31) >> 5;
m_rowSize = rowSize;
m_bits = FX_Alloc(int32_t, m_rowSize * m_height);
FXSYS_memset32(m_bits, 0, m_rowSize * m_height * sizeof(int32_t));
}
void CBC_CommonBitMatrix::Init(int32_t width, int32_t height)
{
m_width = width;
m_height = height;
int32_t rowSize = (width + 31) >> 5;
m_rowSize = rowSize;
m_bits = FX_Alloc(int32_t, m_rowSize * m_height);
FXSYS_memset32(m_bits, 0, m_rowSize * m_height * sizeof(int32_t));
}
CBC_CommonBitMatrix::~CBC_CommonBitMatrix()
{
if (m_bits != NULL) {
FX_Free(m_bits);
}
m_bits = NULL;
m_height = m_width = m_rowSize = 0;
}
FX_BOOL CBC_CommonBitMatrix::Get(int32_t x, int32_t y)
{
int32_t offset = y * m_rowSize + (x >> 5);
if (offset >= m_rowSize * m_height || offset < 0) {
return false;
}
return ((((FX_DWORD)m_bits[offset]) >> (x & 0x1f)) & 1) != 0;
}
int32_t* CBC_CommonBitMatrix::GetBits()
{
return m_bits;
}
void CBC_CommonBitMatrix::Set(int32_t x, int32_t y)
{
int32_t offset = y * m_rowSize + (x >> 5);
if (offset >= m_rowSize * m_height || offset < 0) {
return;
}
m_bits[offset] |= 1 << (x & 0x1f);
}
void CBC_CommonBitMatrix::Flip(int32_t x, int32_t y)
{
int32_t offset = y * m_rowSize + (x >> 5);
m_bits[offset] ^= 1 << (x & 0x1f);
}
void CBC_CommonBitMatrix::Clear()
{
FXSYS_memset32(m_bits, 0, m_rowSize * m_height * sizeof(int32_t));
}
void CBC_CommonBitMatrix::SetRegion(int32_t left, int32_t top, int32_t width, int32_t height, int32_t &e)
{
if (top < 0 || left < 0) {
e = BCExceptionLeftAndTopMustBeNonnegative;
return;
}
if (height < 1 || width < 1) {
e = BCExceptionHeightAndWidthMustBeAtLeast1;
return;
}
int32_t right = left + width;
int32_t bottom = top + height;
if (m_height < bottom || m_width < right) {
e = BCExceptionRegionMustFitInsideMatrix;
return;
}
int32_t y;
for (y = top; y < bottom; y++) {
int32_t offset = y * m_rowSize;
int32_t x;
for (x = left; x < right; x++) {
m_bits[offset + (x >> 5)] |= 1 << (x & 0x1f);
}
}
}
CBC_CommonBitArray* CBC_CommonBitMatrix::GetRow(int32_t y, CBC_CommonBitArray* row)
{
CBC_CommonBitArray* rowArray = NULL;
if (row == NULL || row->GetSize() < m_width) {
rowArray = FX_NEW CBC_CommonBitArray(m_width);
} else {
rowArray = FX_NEW CBC_CommonBitArray(row);
}
int32_t offset = y * m_rowSize;
int32_t x;
for (x = 0; x < m_rowSize; x++) {
rowArray->SetBulk(x << 5, m_bits[offset + x]);
}
return rowArray;
}
void CBC_CommonBitMatrix::SetRow(int32_t y, CBC_CommonBitArray* row)
{
int32_t l = y * m_rowSize;
for (int32_t i = 0; i < m_rowSize; i++) {
m_bits[l] = row->GetBitArray()[i];
l++;
}
}
void CBC_CommonBitMatrix::SetCol(int32_t y, CBC_CommonBitArray* col)
{
for (int32_t i = 0; i < col->GetBits().GetSize(); i++) {
m_bits[i * m_rowSize + y] = col->GetBitArray()[i];
}
}
int32_t CBC_CommonBitMatrix::GetWidth()
{
return m_width;
}
int32_t CBC_CommonBitMatrix::GetHeight()
{
return m_height;
}
int32_t CBC_CommonBitMatrix::GetRowSize()
{
return m_rowSize;
}
int32_t CBC_CommonBitMatrix::GetDimension(int32_t &e)
{
if (m_width != m_height) {
e = BCExceptionCanNotCallGetDimensionOnNonSquareMatrix;
return 0;
}
return m_width;
}
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