| // 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 "fxbarcode/common/BC_CommonBitMatrix.h" |
| |
| #include "fxbarcode/common/BC_CommonBitArray.h" |
| #include "fxbarcode/utils.h" |
| #include "third_party/base/ptr_util.h" |
| |
| CBC_CommonBitMatrix::CBC_CommonBitMatrix() {} |
| |
| 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_Alloc2D(int32_t, m_rowSize, m_height); |
| memset(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_Alloc2D(int32_t, m_rowSize, m_height); |
| memset(m_bits, 0, m_rowSize * m_height * sizeof(int32_t)); |
| } |
| |
| CBC_CommonBitMatrix::~CBC_CommonBitMatrix() { |
| FX_Free(m_bits); |
| } |
| |
| bool CBC_CommonBitMatrix::Get(int32_t x, int32_t y) const { |
| int32_t offset = y * m_rowSize + (x >> 5); |
| if (offset >= m_rowSize * m_height || offset < 0) |
| return false; |
| return ((((uint32_t)m_bits[offset]) >> (x & 0x1f)) & 1) != 0; |
| } |
| |
| 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() { |
| memset(m_bits, 0, m_rowSize * m_height * sizeof(int32_t)); |
| } |
| |
| bool CBC_CommonBitMatrix::SetRegion(int32_t left, |
| int32_t top, |
| int32_t width, |
| int32_t height) { |
| if (top < 0 || left < 0 || height < 1 || width < 1) |
| return false; |
| |
| int32_t right = left + width; |
| int32_t bottom = top + height; |
| if (m_height < bottom || m_width < right) |
| return false; |
| |
| for (int32_t y = top; y < bottom; y++) { |
| int32_t offset = y * m_rowSize; |
| for (int32_t x = left; x < right; x++) |
| m_bits[offset + (x >> 5)] |= 1 << (x & 0x1f); |
| } |
| return true; |
| } |
| |
| 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 (size_t i = 0; i < col->GetBits().size(); ++i) |
| m_bits[i * m_rowSize + y] = col->GetBitArray()[i]; |
| } |