// 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_QRCoderBitVector.h" | |
CBC_QRCoderBitVector::CBC_QRCoderBitVector() | |
{ | |
m_sizeInBits = 0; | |
m_size = 32; | |
} | |
void CBC_QRCoderBitVector::Init() | |
{ | |
m_array = FX_Alloc(FX_BYTE, m_size); | |
} | |
CBC_QRCoderBitVector::~CBC_QRCoderBitVector() | |
{ | |
if(m_array != NULL) { | |
FX_Free(m_array); | |
} | |
m_size = 0; | |
m_sizeInBits = 0; | |
} | |
void CBC_QRCoderBitVector::Clear() | |
{ | |
if(m_array != NULL) { | |
FX_Free(m_array); | |
m_array = NULL; | |
} | |
m_sizeInBits = 0; | |
m_size = 32; | |
m_array = FX_Alloc(FX_BYTE, m_size); | |
} | |
FX_INT32 CBC_QRCoderBitVector::At(FX_INT32 index, FX_INT32 &e) | |
{ | |
if(index < 0 || index >= m_sizeInBits) { | |
e = BCExceptionBadIndexException; | |
BC_EXCEPTION_CHECK_ReturnValue(e, 0); | |
} | |
FX_INT32 value = m_array[index >> 3] & 0xff; | |
return (value >> (7 - (index & 0x7))) & 1; | |
} | |
FX_INT32 CBC_QRCoderBitVector::sizeInBytes() | |
{ | |
return (m_sizeInBits + 7) >> 3; | |
} | |
FX_INT32 CBC_QRCoderBitVector::Size() | |
{ | |
return m_sizeInBits; | |
} | |
void CBC_QRCoderBitVector::AppendBit(FX_INT32 bit, FX_INT32 &e) | |
{ | |
if(!(bit == 0 || bit == 1)) { | |
e = BCExceptionBadValueException; | |
BC_EXCEPTION_CHECK_ReturnVoid(e); | |
} | |
FX_INT32 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(FX_INT32 value, FX_INT32 numBits, FX_INT32 &e) | |
{ | |
if (numBits < 0 || numBits > 32) { | |
e = BCExceptionBadNumBitsException; | |
BC_EXCEPTION_CHECK_ReturnVoid(e); | |
} | |
FX_INT32 numBitsLeft = numBits; | |
while (numBitsLeft > 0) { | |
if ((m_sizeInBits & 0x7) == 0 && numBitsLeft >= 8) { | |
FX_INT32 newByte = (value >> (numBitsLeft - 8)) & 0xff; | |
AppendByte(newByte); | |
numBitsLeft -= 8; | |
} else { | |
FX_INT32 bit = (value >> (numBitsLeft - 1)) & 1; | |
AppendBit(bit, e); | |
BC_EXCEPTION_CHECK_ReturnVoid(e); | |
--numBitsLeft; | |
} | |
} | |
} | |
void CBC_QRCoderBitVector::AppendBitVector(CBC_QRCoderBitVector *bits, FX_INT32 &e) | |
{ | |
FX_INT32 size = bits->Size(); | |
for(FX_INT32 i = 0; i < size; i++) { | |
FX_INT32 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, FX_INT32 &e) | |
{ | |
if(m_sizeInBits != other->Size()) { | |
e = BCExceptioncanNotOperatexorOperator; | |
BC_EXCEPTION_CHECK_ReturnVoid(e); | |
} | |
FX_INT32 sizeInBytes = (m_sizeInBits + 7) >> 3; | |
for(FX_INT32 i = 0; i < sizeInBytes; ++i) { | |
m_array[i] ^= (other->GetArray())[i]; | |
} | |
} | |
FX_BYTE* CBC_QRCoderBitVector::GetArray() | |
{ | |
return m_array; | |
} | |
void CBC_QRCoderBitVector::AppendByte(FX_INT32 value) | |
{ | |
if((m_sizeInBits >> 3) == m_size) { | |
FX_BYTE* newArray = FX_Alloc(FX_BYTE, m_size << 1); | |
FXSYS_memcpy32(newArray, m_array, m_size); | |
if(m_array != NULL) { | |
FX_Free(m_array); | |
} | |
m_array = newArray; | |
m_size = m_size << 1; | |
} | |
m_array[m_sizeInBits >> 3] = (FX_BYTE) value; | |
m_sizeInBits += 8; | |
} |