| // 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 "core/fxcrt/fx_memory.h" |
| #include "xfa/fxbarcode/qrcode/BC_QRCoderBitVector.h" |
| #include "xfa/fxbarcode/utils.h" |
| |
| CBC_QRCoderBitVector::CBC_QRCoderBitVector() { |
| m_sizeInBits = 0; |
| m_size = 32; |
| } |
| void CBC_QRCoderBitVector::Init() { |
| m_array = FX_Alloc(uint8_t, m_size); |
| } |
| CBC_QRCoderBitVector::~CBC_QRCoderBitVector() { |
| FX_Free(m_array); |
| } |
| void CBC_QRCoderBitVector::Clear() { |
| FX_Free(m_array); |
| m_sizeInBits = 0; |
| m_size = 32; |
| m_array = FX_Alloc(uint8_t, m_size); |
| } |
| int32_t CBC_QRCoderBitVector::At(int32_t index, int32_t& e) { |
| if (index < 0 || index >= m_sizeInBits) { |
| e = BCExceptionBadIndexException; |
| BC_EXCEPTION_CHECK_ReturnValue(e, 0); |
| } |
| int32_t value = m_array[index >> 3] & 0xff; |
| return (value >> (7 - (index & 0x7))) & 1; |
| } |
| int32_t CBC_QRCoderBitVector::sizeInBytes() { |
| return (m_sizeInBits + 7) >> 3; |
| } |
| int32_t CBC_QRCoderBitVector::Size() { |
| return m_sizeInBits; |
| } |
| void CBC_QRCoderBitVector::AppendBit(int32_t bit, int32_t& e) { |
| if (!(bit == 0 || bit == 1)) { |
| e = BCExceptionBadValueException; |
| BC_EXCEPTION_CHECK_ReturnVoid(e); |
| } |
| int32_t numBitsInLastByte = m_sizeInBits & 0x7; |
| if (numBitsInLastByte == 0) { |
| AppendByte(0); |
| m_sizeInBits -= 8; |
| } |
| m_array[m_sizeInBits >> 3] |= (bit << (7 - numBitsInLastByte)); |
| ++m_sizeInBits; |
| } |
| void CBC_QRCoderBitVector::AppendBits(int32_t value, |
| int32_t numBits, |
| int32_t& e) { |
| if (numBits < 0 || numBits > 32) { |
| e = BCExceptionBadNumBitsException; |
| BC_EXCEPTION_CHECK_ReturnVoid(e); |
| } |
| int32_t numBitsLeft = numBits; |
| while (numBitsLeft > 0) { |
| if ((m_sizeInBits & 0x7) == 0 && numBitsLeft >= 8) { |
| int32_t newByte = (value >> (numBitsLeft - 8)) & 0xff; |
| AppendByte(newByte); |
| numBitsLeft -= 8; |
| } else { |
| int32_t bit = (value >> (numBitsLeft - 1)) & 1; |
| AppendBit(bit, e); |
| BC_EXCEPTION_CHECK_ReturnVoid(e); |
| --numBitsLeft; |
| } |
| } |
| } |
| void CBC_QRCoderBitVector::AppendBitVector(CBC_QRCoderBitVector* bits, |
| int32_t& e) { |
| int32_t size = bits->Size(); |
| for (int32_t i = 0; i < size; i++) { |
| int32_t num = bits->At(i, e); |
| BC_EXCEPTION_CHECK_ReturnVoid(e); |
| AppendBit(num, e); |
| BC_EXCEPTION_CHECK_ReturnVoid(e) |
| } |
| } |
| void CBC_QRCoderBitVector::XOR(CBC_QRCoderBitVector* other, int32_t& e) { |
| if (m_sizeInBits != other->Size()) { |
| e = BCExceptioncanNotOperatexorOperator; |
| BC_EXCEPTION_CHECK_ReturnVoid(e); |
| } |
| int32_t sizeInBytes = (m_sizeInBits + 7) >> 3; |
| for (int32_t i = 0; i < sizeInBytes; ++i) { |
| m_array[i] ^= (other->GetArray())[i]; |
| } |
| } |
| uint8_t* CBC_QRCoderBitVector::GetArray() { |
| return m_array; |
| } |
| void CBC_QRCoderBitVector::AppendByte(int32_t value) { |
| if ((m_sizeInBits >> 3) == m_size) { |
| uint8_t* newArray = FX_Alloc(uint8_t, m_size << 1); |
| FXSYS_memcpy(newArray, m_array, m_size); |
| FX_Free(m_array); |
| m_array = newArray; |
| m_size = m_size << 1; |
| } |
| m_array[m_sizeInBits >> 3] = (uint8_t)value; |
| m_sizeInBits += 8; |
| } |