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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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