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| 1 // Copyright 2014 PDFium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | |
| 6 // Original code is licensed as follows: | |
| 7 /* | |
| 8 * Copyright 2007 ZXing authors | |
| 9 * | |
| 10 * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 11 * you may not use this file except in compliance with the License. | |
| 12 * You may obtain a copy of the License at | |
| 13 * | |
| 14 * http://www.apache.org/licenses/LICENSE-2.0 | |
| 15 * | |
| 16 * Unless required by applicable law or agreed to in writing, software | |
| 17 * distributed under the License is distributed on an "AS IS" BASIS, | |
| 18 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 19 * See the License for the specific language governing permissions and | |
| 20 * limitations under the License. | |
| 21 */ | |
| 22 | |
| 23 #include "barcode.h" | |
| 24 #include "include/BC_QRCoderBitVector.h" | |
| 25 CBC_QRCoderBitVector::CBC_QRCoderBitVector() | |
| 26 { | |
| 27 m_sizeInBits = 0; | |
| 28 m_size = 32; | |
| 29 } | |
| 30 void CBC_QRCoderBitVector::Init() | |
| 31 { | |
| 32 m_array = FX_Alloc(FX_BYTE, m_size); | |
| 33 } | |
| 34 CBC_QRCoderBitVector::~CBC_QRCoderBitVector() | |
| 35 { | |
| 36 if(m_array != NULL) { | |
| 37 FX_Free(m_array); | |
| 38 } | |
| 39 m_size = 0; | |
| 40 m_sizeInBits = 0; | |
| 41 } | |
| 42 void CBC_QRCoderBitVector::Clear() | |
| 43 { | |
| 44 if(m_array != NULL) { | |
| 45 FX_Free(m_array); | |
| 46 m_array = NULL; | |
| 47 } | |
| 48 m_sizeInBits = 0; | |
| 49 m_size = 32; | |
| 50 m_array = FX_Alloc(FX_BYTE, m_size); | |
| 51 } | |
| 52 FX_INT32 CBC_QRCoderBitVector::At(FX_INT32 index, FX_INT32 &e) | |
| 53 { | |
| 54 if(index < 0 || index >= m_sizeInBits) { | |
| 55 e = BCExceptionBadIndexException; | |
| 56 BC_EXCEPTION_CHECK_ReturnValue(e, 0); | |
| 57 } | |
| 58 FX_INT32 value = m_array[index >> 3] & 0xff; | |
| 59 return (value >> (7 - (index & 0x7))) & 1; | |
| 60 } | |
| 61 FX_INT32 CBC_QRCoderBitVector::sizeInBytes() | |
| 62 { | |
| 63 return (m_sizeInBits + 7) >> 3; | |
| 64 } | |
| 65 FX_INT32 CBC_QRCoderBitVector::Size() | |
| 66 { | |
| 67 return m_sizeInBits; | |
| 68 } | |
| 69 void CBC_QRCoderBitVector::AppendBit(FX_INT32 bit, FX_INT32 &e) | |
| 70 { | |
| 71 if(!(bit == 0 || bit == 1)) { | |
| 72 e = BCExceptionBadValueException; | |
| 73 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 74 } | |
| 75 FX_INT32 numBitsInLastByte = m_sizeInBits & 0x7; | |
| 76 if(numBitsInLastByte == 0) { | |
| 77 AppendByte(0); | |
| 78 m_sizeInBits -= 8; | |
| 79 } | |
| 80 m_array[m_sizeInBits >> 3] |= (bit << (7 - numBitsInLastByte)); | |
| 81 ++m_sizeInBits; | |
| 82 } | |
| 83 void CBC_QRCoderBitVector::AppendBits(FX_INT32 value, FX_INT32 numBits, FX_INT32
&e) | |
| 84 { | |
| 85 if (numBits < 0 || numBits > 32) { | |
| 86 e = BCExceptionBadNumBitsException; | |
| 87 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 88 } | |
| 89 FX_INT32 numBitsLeft = numBits; | |
| 90 while (numBitsLeft > 0) { | |
| 91 if ((m_sizeInBits & 0x7) == 0 && numBitsLeft >= 8) { | |
| 92 FX_INT32 newByte = (value >> (numBitsLeft - 8)) & 0xff; | |
| 93 AppendByte(newByte); | |
| 94 numBitsLeft -= 8; | |
| 95 } else { | |
| 96 FX_INT32 bit = (value >> (numBitsLeft - 1)) & 1; | |
| 97 AppendBit(bit, e); | |
| 98 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 99 --numBitsLeft; | |
| 100 } | |
| 101 } | |
| 102 } | |
| 103 void CBC_QRCoderBitVector::AppendBitVector(CBC_QRCoderBitVector *bits, FX_INT32
&e) | |
| 104 { | |
| 105 FX_INT32 size = bits->Size(); | |
| 106 for(FX_INT32 i = 0; i < size; i++) { | |
| 107 FX_INT32 num = bits->At(i, e); | |
| 108 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 109 AppendBit(num, e); | |
| 110 BC_EXCEPTION_CHECK_ReturnVoid(e) | |
| 111 } | |
| 112 } | |
| 113 void CBC_QRCoderBitVector::XOR(CBC_QRCoderBitVector *other, FX_INT32 &e) | |
| 114 { | |
| 115 if(m_sizeInBits != other->Size()) { | |
| 116 e = BCExceptioncanNotOperatexorOperator; | |
| 117 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 118 } | |
| 119 FX_INT32 sizeInBytes = (m_sizeInBits + 7) >> 3; | |
| 120 for(FX_INT32 i = 0; i < sizeInBytes; ++i) { | |
| 121 m_array[i] ^= (other->GetArray())[i]; | |
| 122 } | |
| 123 } | |
| 124 FX_BYTE* CBC_QRCoderBitVector::GetArray() | |
| 125 { | |
| 126 return m_array; | |
| 127 } | |
| 128 void CBC_QRCoderBitVector::AppendByte(FX_INT32 value) | |
| 129 { | |
| 130 if((m_sizeInBits >> 3) == m_size) { | |
| 131 FX_BYTE* newArray = FX_Alloc(FX_BYTE, m_size << 1); | |
| 132 FXSYS_memcpy32(newArray, m_array, m_size); | |
| 133 if(m_array != NULL) { | |
| 134 FX_Free(m_array); | |
| 135 } | |
| 136 m_array = newArray; | |
| 137 m_size = m_size << 1; | |
| 138 } | |
| 139 m_array[m_sizeInBits >> 3] = (FX_BYTE) value; | |
| 140 m_sizeInBits += 8; | |
| 141 } | |
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