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1 // Copyright 2014 PDFium Authors. All rights reserved. | 1 // Copyright 2014 PDFium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
6 | 6 |
7 #include "core/fxcodec/jbig2/JBig2_ArithDecoder.h" | 7 #include "core/fxcodec/jbig2/JBig2_ArithDecoder.h" |
8 | 8 |
9 #include "core/fxcodec/jbig2/JBig2_BitStream.h" | 9 #include "core/fxcodec/jbig2/JBig2_BitStream.h" |
10 #include "core/fxcrt/include/fx_basic.h" | 10 #include "core/fxcrt/fx_basic.h" |
11 | 11 |
12 namespace { | 12 namespace { |
13 | 13 |
14 struct JBig2ArithQe { | 14 struct JBig2ArithQe { |
15 unsigned int Qe; | 15 unsigned int Qe; |
16 unsigned int NMPS; | 16 unsigned int NMPS; |
17 unsigned int NLPS; | 17 unsigned int NLPS; |
18 unsigned int nSwitch; | 18 unsigned int nSwitch; |
19 }; | 19 }; |
20 | 20 |
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111 | 111 |
112 void CJBig2_ArithDecoder::ReadValueA() { | 112 void CJBig2_ArithDecoder::ReadValueA() { |
113 do { | 113 do { |
114 if (m_CT == 0) | 114 if (m_CT == 0) |
115 BYTEIN(); | 115 BYTEIN(); |
116 m_A <<= 1; | 116 m_A <<= 1; |
117 m_C <<= 1; | 117 m_C <<= 1; |
118 --m_CT; | 118 --m_CT; |
119 } while ((m_A & kDefaultAValue) == 0); | 119 } while ((m_A & kDefaultAValue) == 0); |
120 } | 120 } |
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